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<title cf:type="text"><![CDATA[Editorial Department of Guangdong Agricultural Sciences -->Crop Cultivation · Genetic Breeding]]></title>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Sixty Years’Devotion to Green Revolution andA Life Time Commitment to Food Security—Review on the Academic Achievements of Huang Yaoxiang, Father of Semi-dwarf Rice Breeding]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201909001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[On the 60th anniversary of the success of rice dwarf breeding, the author reviewed the great achievements 
made by Academician Huang Yaoxiang , the father of semi-dwarf rice, in the field of rice breeding research. He led the team 
to develop the world's first widely used indica dwarf rice variety, Guangchangai, through artificial hybridization in 1959, and 
created a new way of rice dwarf breeding. The success of dwarf rice breeding has realized the first leap in rice yield per unit 
area, and led the first Green Revolution in agricultural history with dwarf wheat breeding in Mexico together. And it also laid 
an important foundation on the research and development of hybrid rice, the second Green Revolution. On the basis of rice 
dwarfing breeding, he successively initiated“cross combination and population selection”,“semi-dwarf, early-growing and 
super-high yield breeding”,“semi-dwarf, early-growing, deep-rooted and super-high yield (special) quality breeding” 
and“super rice breeding”, and established an efficient“group screening method” for the conventional hybridization breeding, and then formed a scientific system of ecological breeding, which has enriched and developed the discipline of rice 
breeding. He led the breeding team to develop more than 60 rice varieties, including 15 varieties with an area of more than 
66.7×104 hm2. He successively won 15 awards for various scientific and technological achievements at the national, provincial 
(ministerial) level, and made great contributions to the increase of grain yield and the progress of rice science and technology 
in China. In this paper, we demonstrated Academician Huang Yaoxiang’s thoughts and methods for solving the problems 
encountered in rice production, and also summarized his spirit of seeking truth, being practical, sharp, innovative and willing to 
dedicate and pursue persistently in rice breeding research by reviewing his major achievements made in rice breeding.]]></description>
<pubDate>2019/11/15 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[涂从勇，王 丰]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>涂从勇，王 丰</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201909001&flag=1]]></guid><cfi:id>149</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Studies and Applications on Dynamic Plant Type Breeding Theories in Double Cropping Super Oryza sativa L. subsp. hsien Ting in South China]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201909002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Improving a plant type and shaping a“rice ideal plant type”through plant type breeding are powerful 
technical guarantees for increasing rice yield potential. There exists a basic regular pattern for the growth and development of 
rice (Oryza sativa L. ), at each stage of which, there is an optimum disposition of morphological traits and the corresponding 
physiological features in the plants of population. The disposition of plant type components change as the growth and 
development stage proceeds, and it is called dynamic plant type. According to the practical situation in rice planting area of 
South China, the characteristics of the“dynamic plant type”were compared when different double cropping super Oryza 
sativa L. subsp. hsien Ting (OSHT) varieties (combinations) planted under different ecological environments at the early and late seasons. The theory system of dynamic plant type breeding for super OSHT was first established and was used in superhigh yield OSHT breeding in South China. It was made to change the concept of “plant type component” from qualitative and 
indistinct to dynamic and quantitative, which more clearly reflect the characteristics of the main morphological and physiological 
traits of super OSHT varieties (combinations) in the area and further bring to light the regularity of high yielding formation. 
The theory system has been used to guide the breeding of double cropping super OSHT or high-quality and super high-yield 
rice in South China, and it can improve the breeding efficiency and shorten the breeding period. A number of super OSHT or 
high quality and super-high yield rice varieties (combinations) have been bred and applied in South China, which showed the 
important guiding significance of this theory system for super OSHT breeding or high quality and super-high yield rice breeding 
in South China.]]></description>
<pubDate>2019/11/15 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[陈友订 1
，刘传光 1
，周新桥 1
，陈达刚 1
，郭 洁 1
，陈平丽1
，万邦惠 2，张 旭 1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>陈友订 1
，刘传光 1
，周新桥 1
，陈达刚 1
，郭 洁 1
，陈平丽1
，万邦惠 2，张 旭 1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201909002&flag=1]]></guid><cfi:id>148</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Research of Panicle Nitrogen Fertilizer Amount on Reducing Yield Reduction Caused by Shading at Young Panicle Differentiation Stage of Rice]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201909003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】Theoretical basis for stable yield cultivation of rice under shading environment will be 
provided based on the exploration of the effect of panicle nitrogen (N) fertilizer application on rice yield reduction caused by 
shading environment at young panicle differentiation stage.【Method】The Guinongzhan, a super rice variety of Guangdong 
province, was selected as test material to conduct split plot experiment. At second young panicle differentiation stage, four 
different panicle N fertilizer applications of 0 kg/hm2 (N0), 22.5 kg/hm2 (N1), 37.5 kg/hm2 (N2), 52.5 kg/hm2 (N3) were set as main part. Four shading treatments were set as the secondary part: not shading from the second young panicle differentiation 
stage to maturity (S0), shading from the second young panicle differentiation stage to full heading stage (S1), shading from full 
heading stage to maturity (S2), and shading from the second young panicle differentiation stage to maturity (S3). The effects 
of different N fertilizer amount at second young panicle differentiation stage and different shading time after the young spike 
differentiation on rice growing process, stem tiller characteristics, yield and its components were studied.【Result】Under 
different N fertilizer application amount, yields all showed as:S0 ＞ S1 ＞ S2 ＞ S3. Compared with S0, yields of S1, S2 and S3 
significantly decreased 32.0%, 52.7% and 67.8%, respectively. The increment of N fertilizer reduced the yield reduction effect 
resulted by shading. Compared with N1, yields of N2 and N3 under S1, S2 and S3 increased 3.9% and 4.3%, 4.4% and 6.8%，
0.9% and 3.1% , respectively. Meanwhile, the increment of N fertilizer prolonged grain filling stage, decreased the reduction 
range of spike rate, effective panicle number, filled grains and 1 000-grain weight.【Conclusion】The increasing application of 
panicle N fertilizer application could prolong the grain-filling of rice young panicle differentiation stage encountered low light, 
and reduce the effect of shading on yield and its components, which decreased the yield reduction extent caused by shading. The 
increasing application of N fertilizer had the best effect on the stable production of rice in S2, and then followed by S1 treatment.]]></description>
<pubDate>2019/11/15 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[伍龙梅 1
，李惠芬 1
，黄 庆 1,2，邹积祥 1
，张 彬 1
，包晓哲 1
，李 锐 1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>伍龙梅 1
，李惠芬 1
，黄 庆 1,2，邹积祥 1
，张 彬 1
，包晓哲 1
，李 锐 1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201909003&flag=1]]></guid><cfi:id>147</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Comparison of the Ability of Several Regions as DNA Barcode for Identifying Euphorbiaceae in Hainan]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201909004&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The identification ability of ITS2, ITS, psbA-trnH,rbcL, matK sequences to Euphorbiaceae 
plants in Hainan was compared.【Method】Bidirectional sequencing was conducted on the target sequence of the test 
sample by PCR sequencing. Sequence assembly and consensus sequence generation were performed by using Codon Code 
Aligner. Phylogenetic study was performed by using software MEGA 6.0 in accordance with Kimura-2-parameter (K2P) 
mode. The distribution of intra-specific and inter-specific variation was analyzed by TAXON DNA software and analysis 
on DNA barcoding gaps was carried out.【Result】The sequence acquisition rates of the five candidate sequences were 
86.96%, 76.81%, 89.86% , 79.71% and 49.28%, respectively. The coefficient of variation and information site coefficient 
of ITS2 sequence were the largest. ITS2 sequence had obvious barcoding gap, and the distribution of interspecific and 
intraspecific variation tended to be separated on both sides. Although its sequence had barcoding gap, there were more overlap regions between intraspecific variation and interspecific variation. The barcoding gap of psbA-trnH and matK sequences 
was not obvious, and there were more overlap regions between intraspecific variation and interspecific variation; while the 
barcoding gap of rbcL sequence was not obvious, but the overlap ratio between intraspecific variation and interspecific variation 
was small.【Conclusion】ITS2 has strong ability to identify the Euphorbiaceae plants in Hainan, while rbcL can not be used as 
a single DNA barcode to identify species, but it can be used as a supplementary for ITS2.]]></description>
<pubDate>2019/11/15 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[徐腊红 1
，陆籽豪 2，唐历波 3，李 栎 3]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>徐腊红 1
，陆籽豪 2，唐历波 3，李 栎 3</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201909004&flag=1]]></guid><cfi:id>146</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[An Extraction Technique of Rice DNA SamplesSuitable for High-throughput Genotyping]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201908001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】This paper provides a DNA extraction technique based on 96-orifice plates for rice roots,
which can significantly improve DNA extraction efficiency. 【Method】 A germinated seed was placed in each orifice of a 96
deep-orifice plate, and a 96-orifice PCR plate was placed under the deep orifice plate to promote the rice root stretching into
the PCR plate at an appropriate light and temperature. When the rice seedlings developed with two leaves, the PCR plate was
moved to a mixed liquid of dry ice and 95% ethanol, and the roots were captured by freezing treatment. DNA was extracted
in bulk by using the modified TRIS-EDTA method and the concentration and purity of DNA was detected . 【Result】 The
results showed that all the processes from the seeding to the obtaining of root tissue samples were carried out in 96-orifice
plates, which achieved the mass abtainment of the sample tissues and the accurate correspondence of the target individuals.
Compared with other methods, the efficiency of extracting DNA from 96 rice samples by the modified TRIS-EDTA method
was significantly higher than that of the traditional CTAB method. 【Conclusion】 The batch obtainment of rice root
tissues based on 96-orifice plate and DNA efficient extraction method reported in this paper has practical significance for
improving of rice molecular breeding efficiency.]]></description>
<pubDate>2019/9/24 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[夏澳运，彭子艾，李丹丹，赵壮壮，王 慧，陈志强，郭 涛]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>夏澳运，彭子艾，李丹丹，赵壮壮，王 慧，陈志强，郭 涛</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201908001&flag=1]]></guid><cfi:id>145</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Comparative Test on Forage Grass Cultivars of Pennisetum]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201908002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[：【Objective】 The study tried to have a comprehensive understanding of the forage germplasm resources
suitable for local cultivation and to optimize the promotion strategy of forage species. 【Method】Through field-planting
trial, the yield and nutritional components of 7 main forage grass cultivars were compared. 【Result】 The P.purpureum×P.
typhoideum cv Reyan No.4 had highest grass yield, with a yield of up to 329.67 kg each plot, which was significantly
different compared with other cultivars. And the P. purpureum had lowest plant height and yield. The contents of crude
protein was higher in P. purpureum Schumach and P.purpureum Schumab cv. Purple compared with that of others（6%-
7%）, with the contents of 8.01% and 7.83%, respectively. The content of crude fiber of P.purpureum cv.Guimu No.1 was
33.68%, and those of others were 29%-32%. 【Conclusion】 Combined with the analysis res1ults of the production and
nutritional components, it is suggested that the local promotion and utilization order for the main forage grass cultivars of
Pennisetum is: P.purpureum×P. typhoideum cv.Reyan No.4, P.purpureum Schum.cv.Guiminyin, P. purpureum Schumach,
（P.americanum×P.purpureum）×P. purpureum cv.Guimu No.1, P.purpureum cv.Huanan, P.purpureum Schumab
cv.Purple, P. purpureum. In practical production, different varieties can be planted according to different needs.]]></description>
<pubDate>2019/9/24 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[丁迪云 1
，陈卫东 1
， 陈杰雄 1
，王 刚 1
，吴林瑛 1
，陈三有 2，李品红 2]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>丁迪云 1
，陈卫东 1
， 陈杰雄 1
，王 刚 1
，吴林瑛 1
，陈三有 2，李品红 2</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201908002&flag=1]]></guid><cfi:id>144</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Status and Development Tendency of Chinese HerbalMedicine Planting in Guangdong Province]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201908003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】 Located in south of China, Guangdong Province is rich in biological resources and Southern
medicinal plants, with a wide variety of genuine medicinal materials. It is the main center of the cultivation, production,
processing and distribution of Chinese herbal medicines. However, compared with the traditional agriculture, the overall
planting level of Chinese medicine agriculture is relatively backward. The cultivation of Chinese herbal medicine is
the fundamental part of Chinese medicine agriculture, however, get little attention to the breeding, plant protection and
cultivation of medicinal materials, and less technical guidance has been provided to farmers, which results in the lower
benefits of the planting of Chinese herbal medicine. Chinese medicine agriculture is an important part of the adjustment of
industrial structure and supply-side reform, and more attention is paid to the development of Chinese medicine agriculture
in Guangdong Province. In this paper, the current situation and problems of resource collection and identification, variety
selection and standardized planting of traditional Chinese medicine agriculture were summarized, so as to provide support for
the healthy and sustainable development of Chinese medicine agriculture in Guangdong Province in the future.]]></description>
<pubDate>2019/9/24 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[王继华，蔡时可，杨少海]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>王继华，蔡时可，杨少海</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201908003&flag=1]]></guid><cfi:id>143</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Research Progress on Multi-omics Association Analysisof Crop Resistance to Adversity Stress]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201908004&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Omics includes genomics, transcriptomics, protemics, metabolomics, ionomics etc. With the continuous
development of sequencing technology and sequencing methods, multi-omics association analysis has become a common
technical method to study the crop response to stress. On this basis, the research on genes controlling important agronomic
traits were conducted. The research progresses of correlation analysis of different omics combinations such as transcriptomics
and proteomics, transcriptomics and metabolomics, proteomics and metabolomics, transcriptomics, proteomics and
metabolomics in crop response to adversity stress (abiotic or biotic stress), gene function and assistant breeding were
summarized. It also looks forward to using the data of comprehensive analysis to verify the selected core data and its
application in breeding. The research method of multi-omics combinations can reveal the molecular mechanism of crop
response to stress and provide new ideas for the cultivation of stress resistant varieties in the future.]]></description>
<pubDate>2019/9/24 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[李 洁，姚晓华]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>李 洁，姚晓华</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201908004&flag=1]]></guid><cfi:id>142</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effects of Farmland Shelterbelt on Microclimate and Maize Yield in Ningxia Plain]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201907001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The farmland shelterbelt plays an important role in improving ecological environment，
regulating the microclimate，and raising the level of agricultural productivity. By exploring the microclimate effect of 
farmland shelterbelt in Ningxia Plain and the impact on crop yield，the article provided reference and guidance for the 
scientific planning of farmland shelterbelt in Ningxia Plain.【Method】The Populus alba var. pyramidalis Bge. farmland 
shelterbelt was selected，and the wind speed，air temperature，air humidity，soil water content and maize yield at 
different distance from the farmland shelterbelt were measured，and effects of farmland shelterbelt on microclimate was 
analyzed.【Result】 With the increase of the distance from the shelterbelt，the wind speed. appeared to rise first，then decrease，and rise again.The wind speed at 1 H was the highest，the wind speed at 5 H was the lowest，and the overall wind 
speed was 38% lower than that of the control point.The air temperature at 0.5 H was the lowest，the air temperature at 5 H 
was the highest，and the air temperature at 3-10 H changed slowly. The air humidity showed a trend of first decreasing，then 
increasing，and decreasing again.The air humidity at 0.5 H and 5 H were higher，and the air humidity increased by 5.1% 
compared with that of the control point. The soil water content in the forest net was first increased and then decreased. The soil 
water content at 0.5 H and 1 H was the lowest，and the soil water content at 5 H was the highest. The average maize height at 
0.5 H decreased by 102 cm compared with that of the control point，the yield decreased by 26.3% compared with that of the 
control point，and the overall yield increased by 8.8%.【Conclusion】The effects of farmland shelterbelt on microclimate 
factors varied with the different distance. As a whole，it had the effect of reducing wind speed and decreasing air temperature，
increasing air humidity and soil water content，and increasing maize yield. It was proposed to increase the rate of farmland 
shelterbelt network to improve the farmland microclimate and increase crop yields.]]></description>
<pubDate>2019/8/22 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[何　俊 1
，李妍红 2]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>何　俊 1
，李妍红 2</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201907001&flag=1]]></guid><cfi:id>141</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Research Progress of Non-coding RNA in Plants]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201907002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Protein is the undertaker and embodiment of life activities.Therefore，it was once thought that only RNA，
which encodes proteins，could have important functions.However，with the development of high-throughput sequencing 
and the improvement of bioinformatics in recent years，a large number of non-coding RNA(ncRNAs) has been found.Plant 
non-coding RNA is a kind of RNA that does not encode proteins in transcriptome and plays an important role in regulating 
plant life activities.The classification and biological functions of plant ncRNAs were summarized in this study.The production 
mechanism，molecular mechanism and related functions of stress response of several main ncRNAs，such as microRNAs 
(miRNAs)，lncRNAs (long non-coding RNAs)，circRNAs(circular RNAs) were described in this paper.It provides some 
valuable theoretical basis and reference information for the follow-up study of plant ncRNAs.]]></description>
<pubDate>2019/8/22 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[马博涵，姚　丹，焦苏淇，鲁中爽，李泽远，张爱晶，何浩博，张家野]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>马博涵，姚　丹，焦苏淇，鲁中爽，李泽远，张爱晶，何浩博，张家野</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201907002&flag=1]]></guid><cfi:id>140</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effects of Cultivation Density on Yield andAgronomic Traits of Xiangliangyou 900]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201906001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】Xiangliangyou 900 is a new super-high-yield variety bred by China National Hybrid Rice 
R&D Center (Hunan). Xiangliangyou 900 has the characteristics of strong stem, high spike rate and high seed setting rate 
of large grain and large panicle. In 2017, the effects of yield and agronomic traits of Xiangliangyou 900 were investigated 
under different density population with high-yield cultivation condition in Huiyang district, Huizhou city, Guangdong 
Province. 【Method】 In this study, split blocks were designed in the field. The planting density was from 13 cm×13 cm 
to 24 cm×24 cm with single or multiple plants. The yield and agronomic traits were evaluated based on the data obtained 
in the field and indoor. The data was sorted out by Microsoft Excel and the variance analysis was performed by DPS data 
processing system.【Results】 The results showed that, under the condition of super-high-yield cultivation of hilly paddy 
soil in the Pearl River Delta Region, Xiangliangyou 900 had the highest yield under the planting density of 19 cm×19 cm 
among all treatments. At the same time, Xiangliangyou 900 also had the highest effective panicle number, total grain number per panicle, seed setting rate and total biomass. 【Conclusion】 Xiangliangyou 900 can obtain higher yield in the one-season 
middle rice area based on its yield potential with long growth period. Xiangliangyou 900 with thick stem takes up more space 
and is not sensitive to the number of planting seedlings. Therefore, Xiangliangyou 900 will obtain higher yield under sparse 
planting condition.]]></description>
<pubDate>2019/8/8 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[于相满 1，古幸福 2，李冬娴 2，文嘉瑜 2，陈锐明 2，李　锐 1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>于相满 1，古幸福 2，李冬娴 2，文嘉瑜 2，陈锐明 2，李　锐 1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201906001&flag=1]]></guid><cfi:id>139</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Emergy-based Sustainability Analysis of Double-cropping rice Farming System in South China]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201906002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】Double-cropping rice area in South China is one of the main rice producing areas in China. 
It is of great significance to judge the sustainability of current double-cropping rice cultivation mode in South China from the 
perspective of eco-economy for the healthy and stable development of agriculture. 【Method】The typical double-cropping 
rice system in Guangdong province was taken as the research object, and its sustainable development ability was quantitatively 
evaluated by using emergy analysis method. 【Result】The input of environmental resources accounted for 44.16% of the 
total emergy input of the double-cropping rice system in South China. Among them, the non-auxiliary emergy accounted for 
52.40% of the total emergy input, the net emergy yield rate (EYR) was 1.78, the environmental loading rate (ELR) was 1.06, and 
the emergy sustainability index (ESI) was 4.07. 【Conclusion】The comprehensive evaluation index system of emergy value 
shows that the current double-season planting mode in South China has less environmental pressure and greater potential for 
sustainable development, but its net emergy yield rate is low because it relyes too heavily on natural environmental resources 
and human labor resources. If we can standardize the management of double cropping rice system in South China, properly 
increase the input of agricultural machinery, and put organic fertilizer into use, the sustainable development ability of rice 
planting mode in this region will be improved to a certain extent.]]></description>
<pubDate>2019/8/8 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[冯海怡，陈晓炜，谭康铭，王小龙]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>冯海怡，陈晓炜，谭康铭，王小龙</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201906002&flag=1]]></guid><cfi:id>138</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Study on Different Planting Distances of RatoonSugarcane Adapted to Mechanical Harvesting]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201906003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The research was to investigate the effect of sugarcane wide row planting and local 
conventional planting distance(1.0 m) on the yield and quality of ratoon sugarcane and the adaptability of different varieties 
to different row spacing, explore the sugarcane varieties adapted to different harvesting machinery and sugarcane ratoon wide 
row distance management technology, and provide a basis for the wide spread of sugarcane mechanical harvesting. 【Method】 
The test was conducted based on a test of different sugarcane planting intervals in a year. In the second year, live roots were 
observed in this experiment A test for newly planted sugarcane at different row spacing was conducted, leaving ratoon for 
observation. Three good varieties including GT 29, FN 39, and YT 60 were used as tested sugarcane varieties, and three 
different row distances (1.0,1.2,1.4 m) were designed to study their agronomic traits. 【Result】 Under the row spacing of 1.4 
m, GT29 had a sugar content of 734 kg per 667 m2, which was 26.99% higher than that of the control, while the wide-rowspacing planted YT60 had a sugar content similar to that of the control. The comprehensive performance of agronomic and 
yield traits of GT29 and YT60 under wide row spacing planting was better than that of the control, which indicated that GT29 
and YT 60 had good adaptability to wide row spacing planting. 【Conclusion】 FN39, which has no advantage in wide row spacing planting, is not suitable for medium and large scale mechanization planting management. GT29 has good adaptability 
to wide row spacing planting, and a row spacing of can be regarded as 1.4m as the optimal raw spacing for full mechanization 
planting.]]></description>
<pubDate>2019/8/8 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[杨业彬，韦开军，邓　思，阳康春，周　颀，覃耀冠，张　燕]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>杨业彬，韦开军，邓　思，阳康春，周　颀，覃耀冠，张　燕</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201906003&flag=1]]></guid><cfi:id>137</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Correlation Analysis on Economic Traits and Quality Traits of Spring Rapeseed(Brassica campestris L.) in Tibet]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201905001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】 The correlation between economic traits and quality traits of spring rapeseed(Brassica 
campestris L.) was studied, and the main indicators for determining the yield and oil content of spring rapeseed were 
selected. 【Method】 Taking 41 spring rapes arranged by Tibet Academy of Agriculture and Animal Husbandry Sciences 
as materials, the economic traits such as plant height, branch position, number of branches, length of main sequence, main 
sequence pod, pod density, number of pods per plant, pod length, per-fruit seed number, yield per plant, and 1000-grain 
weight were detected. The oil content, erucic acid and glucosinolate contents of rapeseed were detected by near-infrared 
quality analyzer. Cluster analysis of 41 materials was conducted and correlation between indicators was analyzed. 【Results】 
The results of correlation analysis showed that the number of branches, the number of pods per plant, the pods of main 
inflorescence, the length of pods and the yield of rape were significantly or highly significantly correlated, and the correlation 
between other economic indicators and yield was not significant. Oil content was negatively correlated with erucic acid 
content, but with no significant correlation.【Conclusion】The number of branches, the number of pods per plant, the pods of main inflorescence, and the length of pods can be used as the main indicators for the evaluation of spring rapeseed yield, and 
other economic indicators as secondary indicators. Erucic acid can be used as a reference for the evaluation of oil content.]]></description>
<pubDate>2019/7/1 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[次仁白珍，唐 琳，袁玉婷，王晋雄，尼玛次仁，赵彩霞，李施蒙，南志强]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>次仁白珍，唐 琳，袁玉婷，王晋雄，尼玛次仁，赵彩霞，李施蒙，南志强</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201905001&flag=1]]></guid><cfi:id>136</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effects of Soil Amendments on Tobacco Yield and Quality, Soil  Physical and Chemical Properties and Soil Enzyme Activities]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201905002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The objective of the study is to screen suitable soil amendments for sandy soil in Nanxiong 
tobacco-growing areas.【Method】The effects of different soil amendments on tobacco yield, quality and soil physical and 
chemical properties were studied through field experiment.【Result】The results showed that the soil amelioration effect 
of bio-carbon was better than that of mineral conditioner. The yield and output value of tobacco leaves treated with biocarbon were significantly higher than those of control group, with an increase of 20.00% and 54.02% respectively. And the 
proportion and average price of superior tobacco were 84.18% and 27.54% higher than those of control group. The nicotine 
content, potassium content, total nitrogen content, chlorine content and protein content of flue-cured tobacco treated with bio-carbon were within the appropriate range, the sugar-alkali ratio was between 8 and 12, and the chemical composition of 
flue-cured tobacco was more coordinated. Bio-carbon and mineral conditioners could improve soil pH, physical and chemical 
properties and effective nutrient contents in soil. Bio-carbon could improve soil enzyme activity in tobacco-growing soils, 
and its exchangeable calcium and exchangeable magnesium contents were 30.75% and 19.33% higher than the control group, 
respectively.【Conclusion】 Bio-carbon treatment (1 500kg/hm2) had obvious effects on improving the yield and quality of 
tobacco leaves and the physical and chemical properties of soils in sandy soil of Nanxiong tobacco-growing areas.]]></description>
<pubDate>2019/7/1 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[李集勤 1
，杨少海 1
，卢钰升 2，顾文杰 2，刘 阳 4，刘 兰 3，李淑玲 1
，陈俊标 1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>李集勤 1
，杨少海 1
，卢钰升 2，顾文杰 2，刘 阳 4，刘 兰 3，李淑玲 1
，陈俊标 1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201905002&flag=1]]></guid><cfi:id>135</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Diurnal Variation of Chlorophyll Fluorescence Parameters of Four Varieties of Coffea Leaves]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201905003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Ojective】The objective was to study the diurnal variation of chlorophyll fluorescence of different 
Coffea varieties and its correlation with environmental factors, and to explore the adaptability of Coffea to the environment 
for providing a basis for the cultivation of Coffea varieties adapted to local climate. Study the adaptation of Coffea to their 
environment in order to provided references for breed varieties. 【Method】The chlorophyll fluorescence parameters and 
SPAD of four Coffea cultivars(Coffea liberica, Coffea robusta, Coffea arabica Catimor 2 and Catimor 3) were measured by 
modulated chlorophyll fluorescence fluorometer (pulse-amplitude-modulation FMS-2) and hand-held chlorophyll analyzer respectively. 【Results】The diurnal variation of Fo of Coffea liberica and Coffea arabica Catimor 2 is in “M” shape, the 
diurnal variation of Fo of Coffea liberica and Coffea arabica Catimor 2 is in “M” shape, while that of Coffea robusta and 
Coffea arabica Catimor 3 is in “V” shape . At 15:00, Fo of Coffea liberica decreased significantly, with the minimum value 
183.20, and that of Coffea robusta reached the maximum value of 262.60. At 17:00, Fo of Coffea arabica Catimor 3 reached 
the maximum value of 199.44. Fo of Coffea arabica Catimor 2 was lower than that of the other three Coffea varieties for most of 
the day session. The diurnal variation of Fv/Fm of four Coffea varieties is in “V” type curve. Except that the lowest point of 
Coffea robusta was 0.65 at 13:00, the other varieties were 0.60, 0.66 and 0.65 at 15:00 respectively. The correlation analysis 
showed that, Coffea robusta and Coffea arabica Catimor 3 have correlation with environmental factors such as temperature, 
relatively humidity and solar radiation intensity while Coffea liberica has a significant negative correlation with relative humidity 
and Coffea arabica Catimor 2 has a significant positive correlation with relative humidity. The correlation between SPAD and 
four varieties is not significant. 【Conclusion】In the day, under strong solar radiation, high temperature and low air humidity 
conditions, Coffea liberica protect itself mainly by increasing thermal dissipation, Coffea robusta, Coffea arabica Catimor 2 and 
Catimor 3 mainly take the reversible inactivation and damage of PSII reaction center as the protection mechanism. And Fv/Fm 
of four Coffea varieties decreases first and then increases, showing the reversible inactivation of PS Ⅱ reaction centre of Coffea 
arabica Catimor 2, Catimor 3 and Coffea robusta. Fo of Coffea arabica Catimor 2 is lower than that of the other three varieties for 
most of the day and its Fv/Fm is higher, so more energy is used for photoreaction.]]></description>
<pubDate>2019/7/1 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[武瑞瑞，黄家雄，杨　阳，李亚男，张晓芳，吕玉兰，何红艳，李贵平]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>武瑞瑞，黄家雄，杨　阳，李亚男，张晓芳，吕玉兰，何红艳，李贵平</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201905003&flag=1]]></guid><cfi:id>134</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Study on the Determination Method of Three Kinds of Phenolic Acids in Potato Soil Under Different Continuous Cropping Patterns]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201904001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】 To establish a method for the determination of three phenolic acid compounds (vanillic acid,
p-hydroxybenzoic acid and ferulic acid) in potato soil in a rapid and accurate manner，a study on the influence of different
continuous cropping patterns (common continuous cropping, corn/potato rotation and intensified continuous cropping) on
three phenolic acid compounds in potato soil was conducted. 【Method】 The wavelength, mobile phase system, column
temperature and other parameters were optimized in chromatographic condition by means of high performance liquid chromatography (HPLC)，and the phenolic acids in potato soil under different continuous cropping patterns were determined in
the optimized chromatographic condition. 【Result】 In certain chromatographic condition (Agilent XDB-C18 column: 250×4.6
mm, 5 μm; detection wavelength: λ=280 nm; column temperature:35℃ ; injection volume: 20μL; mobile phase: 75%A liquid
(glacial acetic acid regulation, pH=2.60); 25% B solution (acetonitrile) isocratic elution; dual-pump volume flow rate: SI=0.8
mL/min). there was a good linear relationship between the three phenolic acids (within a reasonable concentration range) and
peak area with the correlation coefficients greater than 0.99, the recovery rates between 94.37% and 100.46%, and the relative
standard deviations of reproducibility experiments below 0.18. The content of the three phenolic acids in potato soil was detected
under different continuous cropping patterns. There was no significant difference among the content of the three phenolic acids
under the blank control before and after the growth period. The content of the three phenolic acids under the three continuous
cropping patterns in the mature stage was lower than that in the early stage. The content of phenolic acid in corn-potato rotation
soil in the mature stage was lower than that in the other two continuous cropping patterns, with significant difference from the
blank control. 【Conclusion】 With the features of simple, accurate and reliable, optimized HPLC can determine the content
of the three phenolic acids in potato soil effectively. The rotation of corn-potato can reduce the content of these three phenolic
acids in soil and alleviate the continuous cropping disorder caused by phenolic acids.]]></description>
<pubDate>2019/5/23 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[熊  湖 1
，郑顺林 1，2，黄  强 1
，龚  静 1
，梁衍铃 2，袁继超 1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>熊  湖 1
，郑顺林 1，2，黄  强 1
，龚  静 1
，梁衍铃 2，袁继超 1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201904001&flag=1]]></guid><cfi:id>133</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Study on Physiological Differences Between ISF Line and Pistillate Line of Ricinus communis L.]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201904002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The objective of this study was to analyze the physiological differences between the ISF line
and the pistillate line of Ricinus communis L. and provide reference for the sex differentiation regulation of R. communis
L. and its application in R. communis L. breeding.【Method】The chlorophyll relative content, net photosynthetic rate,
soluble nutrients and endogenous hormones in leaves were analyzed at the bud stage and flowering stage by using the highly
homozygous ISF line and pistillate line with the same genetic background as tested materials. 【Result】At the bud stage,
the contents of soluble sugar and cytokinin of ISF line were significantly higher than those of pistillate line, with the increase
of 36.9% and 61.5%, respectively and the gibberellin content of ISF line was significantly lower than that in pistillate line,
with a decrease of 25.6%. At the flowering stage, the chlorophyll relative content, net photosynthetic rate, gibberellin,
auxin and ethylene content in the ISF line were significantly higher than those in the pistillate line, with the increase by
15.2%, 23.3%, 13.8%, 33.5% and 73.8% respectively, while the contents of soluble sugar, soluble starch and abscisic acid
significantly decreased by 38.0%, 54.9% and 14.8%, respectively.【Conclusion】The formation of ISF was characterized by the increase of soluble sugar and cytokinin, followed by the obvious increase of nutrient consumption, chlorophyll content, net
photosynthetic rate, contents of gibberellin, auxin and ethylene, and the decrease of abscisic acid concentration.]]></description>
<pubDate>2019/5/23 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[何晓琳 1
，施玉珍 2，殷学贵 1
，杨  婷 1
，陆建农 1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>何晓琳 1
，施玉珍 2，殷学贵 1
，杨  婷 1
，陆建农 1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201904002&flag=1]]></guid><cfi:id>132</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effect of Different Nitrogen Application Rate on Growth and Yield of Wild Chrysanthemum under Intercropping System]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201904003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】 The present experiment was conducted for a comparison of the differences in the growth
and yield of wild Chrysanthemum produced by different N application rates under the intercropping system so as to select
an optimum N application rate and to provide guidance for the producers who are practicing high yield and high-efficiency
cultivation of wild Chrysanthemum. 【Method】 Through filed experiment, the plant height, branch number, dry matter
accumulation, leaf area index(LAI), SPAD value of leaf, flesh flower yield and dry flower yield of wild Chrysanthemum treated
with different nitrogen application under the intercropping system of“fortunella margarita-wild Chrysanthemum”were
measured and compared. 【Result】 The results showed that the growth and yield of wild Chrysanthemum were significantly
affected by N application rates. The plant height and branch number increased significantly with the increase of nitrogen
application.The flesh flower yield and the dry flower yield in the 135 kg/hm2 N application rate treatment were the highest,
reaching to 8 356.0 kg/hm2 and 2 615.7 kg/hm2, respectively. However, excessive N application was not conducive to the further increase of yield. There was no significant difference among the six N application treatments in terms of the ratio of
drying. The high yield in the 135 kg/hm2 N application rate treatment mainly got benefit from the increase of flesh flower
yield (37.6 g) and dry flower yield (11.77g ) per plant. Its total dry matter reached 962.7 g/m2. This might owe to the relatively
high SPAD value of leaf and the relatively high leaf area index (LAI) during the growing period. Having higher LAI at fullflowering stage could improve the production capability of dry matter and the number of flowers, thus significantly increased dry
matter accumulation (DMA) and the yield of flesh flower. 【Conclusion】 In intercropping system, the application of N could
significantly accelerate the growth and increase the yield of the wild chrysanthemum. In this experiment, the highest yield of the
wild chrysanthemum in N4 treatment was 135 kg/hm2. Therefore, it is recommended that the optimum N application rate for the
wild chrysanthemum is 135 kg/hm2.]]></description>
<pubDate>2019/5/23 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[李小勇1
，夏祥华 2，陶进科 3，黄丹娜 2，罗菊云 3，吴秀光 3]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>李小勇1
，夏祥华 2，陶进科 3，黄丹娜 2，罗菊云 3，吴秀光 3</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201904003&flag=1]]></guid><cfi:id>131</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Evaluation and Classification of Low Fertility Tolerance of Main Rice Varieties in Guangxi]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201903001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Abstract：【Objective】The present study was to evaluate the ability of low fertilizer tolerance of major rice
varieties in Guangxi and to screen nutrient-efficient rice varieties for production and application.【Method】48 major
rice varieties were selected for field experiment and four treatments were set, i.e. 1/3 standard nitrogen fertilization, no
phosphorus fertilization, no potash fertilization and standard fertilization. The ability of low fertilizer tolerance of rice
varieties was evaluated based on relative yield (ratio of rice yield under low fertilizer conditions to that under standard
fertilizer conditions). 【Result】 The relative yields of the three treatments (1/3 N application, no P application and K
application) were 0.89, 0.88 and 0.93, respectively, and there were significant differences among varieties. Based on the
clustering analysis of relative yield of varieties, 48 rice varieties could be grouped into three categories according to their
tolerance to low nitrogen, phosphorus and potassium, respectively. Among all varieties , Guangliangyou 1598, Guiliangyou
2, Teyou 5,Teyou 582,Guifeng 2,Teyou 3813,Teyou 6135, Keliangyou 889, Zhongguangxiang 1, Yahangjinzhan had strong
tolerance to low nitrogen, phosphorus and potassium simultaneously. 【Conclusion】There were significant differences in
the tolerance to low nitrogen, phosphorus and potassium among different rice varieties in Guangxi. 10 of 48 varieties had
strong tolerance ability to low nitrogen, phosphorus and potassium.]]></description>
<pubDate>2019/4/24 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[李发桥 1
，戴晓萧 1
，王伦伟 1
，夏小舟 1
，韦善清 1
，梁  和 1
，江立庚]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>李发桥 1
，戴晓萧 1
，王伦伟 1
，夏小舟 1
，韦善清 1
，梁  和 1
，江立庚</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201903001&flag=1]]></guid><cfi:id>130</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Study on the Effect of Cassava Leaf Allelopathy on Soil Nutrient and Enzyme Activity]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201903002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】 The experiment was conducted to explore the effect of cassava leaf allelopathy on
nutrients and enzyme activities in the rhizosphere soil of cassava. 【Method】The field experiment was designed by using
edible cassava variety“SC9” as tested variety and treating cassava leaf extracts with different concentration to explore
the nutrients and enzyme activities of cassava rhizosphere soil in different treatment periods. 【Result】The cassava leaf
allelopathy showed little effect on pH larger. The organic matter content was hardly affected by treatment time. However,
it increased first and then decreased with the increase of treatment concentration and reached the highest value when
the treatment concentration was 0.05 g/mL, with the organic matter contents of 41.14 g/kg (one month treatment), 52.20
g/kg (two month treatment) and 36.22 g/kg (four month treatment), respectively. Soil available nitrogen and available
phosphorus content showed a similar trend with organic matter content. The available nitrogen content reached the highest value when the treatment concentration was 0.05 g/mL, with the contents of 143.21 mg/kg (one month treatment), 204.83 mg/
kg(two months treatment) and 127.88 mg/kg (four months treatment) , respectively. The available phosphorus content got the
highest value when the treatment concentration was 0.05 g/mL, with the contents of 229.03 mg/kg (one month treatment),
316.40 mg/kg (two months treatment) and 235.99 mg/kg (four months treatment), respectively. The highest effective potassium
content was 675.16 mg/kg (one month treatment) when treated at the concentration of 0.1 g/mL, while its highest contents were
819.35 mg/kg (two months treatment) and 665.38 mg/kg (four months treatment) respectively when treated at the concentration of
0.05 g/mL. Generally, allelopathy could increase soil enzyme activities. The highest urease activity was obtained at the treatment
concentration of 0.1 g/mL, and the urease NH4
+-N were 467 mg/kg (one month treatment), 503 mg/kg (two months treatment) and
408 mg/kg (four months treatment), respectively. The activities of soil acid phosphatase P2O5 and catalase reached the highest at
the concentration of 0.05 g/mL. The acid phosphatase activities were 106 mg/kg (one month treatment), 143 mg/kg (two months
treatment) and 134 mg/kg (four months treatment), respectively. The activities of catalase were 6.53 mg/kg (one month treatment),
6.71 mg/kg (two months treatment) and 5.24 mg/kg (four months treatment), respectively. 【Conclusion】 The cassava leaf
allelopathy had effect on the soil nutrition and the enzyme activities, and allelopathy could be used as a measure for weed control in
the cassava field.]]></description>
<pubDate>2019/4/24 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[李  静 1
，何时雨 1
，刘世伟 2，林希昊1
，郑永清 1
，刘  青]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>李  静 1
，何时雨 1
，刘世伟 2，林希昊1
，郑永清 1
，刘  青</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201903002&flag=1]]></guid><cfi:id>129</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Analysis on Yield Increase, Quality Improvement and Cost Saving Effects of Disaster Avoidance and Efficient Cultivation Technique for Mountain Rapeseed]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201903003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was conducted to avoid the“five harms”restricting the production of mountain
rapeseed and improve the comparative benefit of mountain rapeseed.【Method】Comparative experimental study on disaster
avoidance and efficient cultivation and traditional cultivation was conducted in the same field. 【Result】The yield per 667
m2 of high-efficiency disaster avoidance cultivation was 156.17 kg ,while that of traditional cultivation was 96.52 kg, with a
yield increase of 65.65 kg and an increase rate of 72.53%. The output value of disaster avoidance and efficient cultivation
was CNY 833.15, the cost was CNY 538.54 and the net income was CNY 294.61, while the output value of traditional
cultivation was CNY 473.57, the cost was CNY 871.51 and the net income was CNY397.94. Compared with traditional
cultivation, the cost was reduced by CNY 332.96, the output value was increased by CNY 359.58 and the net income was increased by CNY 652.55. The crude fat content of rapeseed could be increased by 2.87% in disaster avoidance and efficient
cultivation, the content of erucic acid decreased by 0.57%, and the content of sulfuric glucoside decreased by 6.24 μmol/g,
with a decrease rate of 13.02%.【Conclusion】This technology had remarkable effect in saving cost and improving yield and
quality with considerable economic benefit. Therefore, it was suitable to be promoted and applied in Yuxi and even the whole
mountainous area of Yunnan.]]></description>
<pubDate>2019/4/24 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[胡新洲 1
，杨进成 1
，李红彦 1
，李  祥 1
，刘坚坚 1
，安正云 1
，李明芳 2，普家富]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>胡新洲 1
，杨进成 1
，李红彦 1
，李  祥 1
，刘坚坚 1
，安正云 1
，李明芳 2，普家富</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201903003&flag=1]]></guid><cfi:id>128</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Research Progress of Plant Heat Shock Protein Response to Abiotic Stress]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201903004&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Abiotic stress has an important effect on the normal growth of crops. The conformation of cellular
proteins can be altered by abiotic stress, which causes the aggregation of non-natural protein and the destruction of
cell membrane structure. Heat shock proteins are responsible for the folding, assembly, transport and degradation of
protein, assist the protein refolding under stress conditions and restore cell homeostasis by reconstructing normal protein
conformation. Hsps can participate in other stress response mechanisms and play an important role in protecting plants
from abiotic stress.The functions of various Hsps in plant abiotic stress response were summarized in this paper. The
involvement of Hsps in other stress response mechanisms and the role of Hsps in other stress response mechanisms were
described. And the problems existing in the research of Hsps were discussed and proposed, which provided a theoretical
basis for the selection of stress-resistant genes in crop molecular breeding.]]></description>
<pubDate>2019/4/24 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[李广隆，刘思言，鲁中爽，么梦凡，李远强，关淑艳，姚  丹，曲  静]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>李广隆，刘思言，鲁中爽，么梦凡，李远强，关淑艳，姚  丹，曲  静</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201903004&flag=1]]></guid><cfi:id>127</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Changes of High-Temperature Damage to Double Cropping Rice of Six Counties (Cities) in Southwest Guangxi and Countermeasure]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201902001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】This paper studied the temporal and spatial distribution relationship of comprehensive
high temperature damage index and yield reduction rate in southwest Guangxi, and explored the spatial distribution law
of high temperature damage to double cropping rice in order to provide reasonable suggestions for rice planting in this
area to avoid losses and ensure food security.【Method】The comprehensive high temperature damage index, based on
the Logistic model, were used to evaluate the high temperature damage situation and temporal and spatial variation of double cropping rice of 6 counties(cities) in southwest Guangxi.【Result】The results showed that the average reduction rate
of early rice of the 6 counties(cities) in southwest Guangxi increased notably from 7% in 1980s to 22.4% in the early 21st
century and the average reduction rate of late rice increased significantly from 17.6% in 1980s to 22.1% in the early 21st
century. The high temperature was one of the main causes of the increase of reduction rate, and the loss of rice was serious
because of high temperature. The intensity of double-cropping rice affected by high temperature damage was various in the
different regions of southwest Guangxi, and the intensity of early rice affected by high temperature damage showed a rising
trend in fluctuation, with the lowest intensity appearing in the 1990s while the highest intensity appearing in the early 21st
century. The intensity of late rice affected by high temperature was weak and the intensity did not fluctuated sharply expect
that the relatively high intensity appeared in 1990s.【Conclusion】 Since the 1980s, partial key growth stages of early rice
did not fall into the period with high temperature, and this could be avoided by applying fertilizer or plant growth regulator
at the early stage. For late rice, given the test results of Guangdong Province, the sowing time could be postponed to July to
avoid the concentrated period of high temperature and ensure the stability of food security.]]></description>
<pubDate>2019/3/26 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[孙  雯1，王  月]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>孙  雯1，王  月</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201902001&flag=1]]></guid><cfi:id>126</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[A Comparative Study on Transplanting and Direct Seeding of Rapeseed Blanket Seedling]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201902002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was to explore the suitable transplanting date of transplanting rapeseed from
blanket seedlings and the latest transplanting date for high-yield cultivation standard, and to guide the large-scale
production of transplanting rapeseed from blanket seedlings. 【Method】The variety of Ningza 1818 ( Brassica napus L. )
was chosen as the experiment material. In this experiment, two planting patterns- transplanting and direct-seeding were set
and each pattern was set with six dates, i.e. October 15, October 20, October 25, October 30, November 4 and November 9,
to study their yield level and economic benefits.【Result】Results showed that the seed yield of the transplanted rapeseed
from the blanket seedlings increased first and then decreased with the delay of transplanting date, and the seeds transplanted
on October 25 gained a highest yield, reaching 3810.1 kg/hm2. The results of path analysis showed that the yield of rapeseed transplanted from blanket seedlings was mainly affected by the number of pods while the yield of direct-seeding rapeseed was
mainly affected by the seeds number per pod. Regression analysis result showed that there was a quadratic curve relationship
between the yield and the transplanting date. According to the regression equation, it could be figured out that the highest yield
appeared on October 28.【Conclusion】Taking the highest yield decreased by 5% or less as the standard, it could be obtained
that the suitable transplanting period was from October 18 to November 7, and 3 000 kg/hm2 was set as the minimum standard of
high yield in production it could be obtained that the latest transplanting date for high-yield cultivation was November 16.]]></description>
<pubDate>2019/3/26 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[冯云艳 1，2，冷锁虎 1
，冯倩南 1
，张含笑 1
，刘  浩 1
，盖小斌 1，3，杨  光 1
，左青松 1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>冯云艳 1，2，冷锁虎 1
，冯倩南 1
，张含笑 1
，刘  浩 1
，盖小斌 1，3，杨  光 1
，左青松 1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201902002&flag=1]]></guid><cfi:id>125</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Analysis of Differences in Potassium Content among Tobacco Germplasm and Screening of Field Identification Indicators]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201902003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】In this paper, the screening of field identification indicators of potassium content in 
tobacco leaves was explored and the difference of potassium content among tobacco germplasms was analyzed in order to 
select suitable identification indicators and establish a mathematical evaluation model.【Method】31 tobacco germplasms 
were treated in field experiments. 11 morphological characteristic indicators, such as plant height（x1）, stem girth（x2）, 
intermodal distance（x3）, leaf number（x4）, maximum leaf length（x5）, maximum leaf width（x6）, angle of lateral 
vto midrib（x7）, angle between stem and leaf（x8）, corolla length（x9）, corolla diameter（x10）and calyx length
（x11）were investigated and hierarchical cluster analysis, principal component analysis, factor analysis and multiple 
stepwise regression analysis were used to comprehensively evaluate the potassium content in tobacco leaves. 【Result】 
Results revealed that 31 tobacco germplasm were clustered into high potassium germplasm, medium potassium germplasm and low potassium germplasm by cluster analysis. 11 single indexes were transformed into 5 independent comprehensive 
indicators through principal component analysis, which represented 84.624% of the whole data of the traits related to tobacco 
potassium content. And a mathematical evaluation model of potassium content in tobacco leaves was established by multiple 
stepwise regression analysis, i.e.y=-1.699+0.041 x5+0.831 x10（R2=0.9602）,with an accuracy of 89.66%.【Conclusion】
Leaf length（x5）and corolla diameter（x10）reflected the potassium content of tobacco leaves significantly and could be 
used as field identification indicators for the potassium content of tobacco leaves.]]></description>
<pubDate>2019/3/26 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[马柱文，张振臣，袁清华，屈玉娇，李集勤，李淑玲，陈俊标]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>马柱文，张振臣，袁清华，屈玉娇，李集勤，李淑玲，陈俊标</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201902003&flag=1]]></guid><cfi:id>124</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Study on the Comparison and Evaluation of the Growth Differences of 8 Bletilla formosana Provenances from Yunnan Province]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201902004&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The present study explored the phenology and growth regularity of Bletilla formosana from
different provenances in order to provide candidate germplasm resources for landscaping as well as the development and
utilization of B. formosana products.【Method】By taking 313 stains of B. formosana from 8 different provenances in
Yunnan Province as the research objects, the growth indexes such as their phenology and plant height, ground diameter,
leaf number, leaf length, leaf width and length-width ratio were compared and the germplasm resources of B. formosana
were evaluated by the principal component analysis and comprehensive index method.【Result】The variation of B. 
formosana germplasm resources was rich in Yunnan Province. The germination and flowering time of B. formosana of
different provenances were various. There were extremely significant differences in plant height, leaf number, leaf length
and length-width ratio of different B. formosana provenances, and there were significant differences in ground diameter,while there was no significant difference in leaf width.【Conclusion】The Xiaojianshan provenance had the earliest
germination and the longest florescence, which sprouted in mid-March with a florescence of 75d, and this provenance could
be used as a candidate for landscaping germplasm. The provenances in Sanjiaoshan and Xiaomesuo, with fairly good growth
indexes, got the comprehensive evaluation scores of 4.822 and 1.687 respectively and could be used as excellent germplasm
resources for further research on multi-point test, parental selection, hybridization and family determination .]]></description>
<pubDate>2019/3/26 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[韩明升 1，2，王  翔 1
，陈朝红 1
，王世优 1
，章金龙 1
，马前涛 1
，宋志姣 1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>韩明升 1，2，王  翔 1
，陈朝红 1
，王世优 1
，章金龙 1
，马前涛 1
，宋志姣 1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201902004&flag=1]]></guid><cfi:id>123</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effects of Exogenous NO on Seed Vigor and Ultra-weak Luminescence of Paris]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201902005&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The objective of this paper was to investigate the effect of nitric oxide (NO) on the
germination quality of Paris seeds so as to overcome difficulties in seed germination and to provide a basis for the research
aiming at promoting Paris germination. 【Method】Seeds of Paris polyphylla var. yunnanensis and Paris polyphylla var.
chinensis were selected as the objects of study and treated with 100 μmol/L NO donor-sodium nitroprusside. The seeds
treated with water under the same conditions were taken as the control group to record the morphological changes and
the germination rates and the electron multiplying CCD ultra-weak light image detection system was used to detect the
spontaneous ultra-weak luminescence intensity of the seeds during germination to study the changes of the spontaneous
ultra-weak illuminance intensity of the P. polyphylla seeds treated with sodium nitroprusside.【Result】The results
showed that the seeds treated with sodium nitroprusside germinated 20 days earlier than the control seeds. There was no
significant difference in spontaneous ultra-weak luminescence between the control group and the seeds treated with sodium
nitroprusside 0-30 days after germination, and the luminescence intensity of seeds treated with sodium nitroprusside was
significantly higher than that of the control group 40-60 days after germination.【Conclusion】Sodium nitroprusside
treatment during seed germination of Paris significantly improved the germplasm and promoted germination.]]></description>
<pubDate>2019/3/26 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[李海明 1
，李梅香 1
，孟艳艳 1
，宋发军1
，戴甲培 2，李泽华 2，耿  红 1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>李海明 1
，李梅香 1
，孟艳艳 1
，宋发军1
，戴甲培 2，李泽华 2，耿  红 1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201902005&flag=1]]></guid><cfi:id>122</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Impact of Exogenous Methyl Jasmonate on Water Absorption of Maize Roots Under Salt Stress]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201901001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】Jasmonic acid (JA) , as an important plant hormone, plays an important role in plants’ 
response to biological stress and abiotic stress. However, the previous researches on the improvement of plant abiotic stress 
in JA acid mainly focused on JA to improve the antioxidant ability of plants to improve plant resistance, and its effect on 
plant water balance was relatively few. Although exogenous JA application is known to enhance plant stress tolerance, the 
underlying mechanisms involved in this process are still poorly understood.【Method】The influence of methyl jasmonate 
(MeJA, 1 μmol/L) on water absorption of maize roots under short-term (2h) salt (100 mmol//L) stress was analyzed by 
applying the methyl jasmonate (1 μmol/L) in an exogenous manner under hydroponics (1/4 Hoaglands nutrient solution) 
conditions in order to provide a theoretical basis for salt-alkali-resistant maize breeding.【Result】Exogenous methyl 
jasmonate improved the root biomass and aboveground biomass by 41.32% and 40.69% respectively under salt stress.
Moreover, physiological indicator analysis showed that exogenous methyl jasmonate significantly enhanced the physiological 
indicators of leaves such as net photosynthetic rate (47.48%), transpiration rate, leaf water potential, relative water content of leaf under salt stress; high root hydraulic conductivity (increased by 41.60% compared with non-jasmonate condition) played an 
important role in maintaining high transpiration rate and relative water content of leaf under salt stress. In addition, exogenous 
mercuric chloride inhibition test indicated that, under methyl jasmonate conditions, the high root hydraulic conductivity 
correlated significantly with the aquaporin activity. 【Conclusion】Under salt stress, jasmonate could improve the root 
hydraulic conductivity of maize by regulating the aquaporin activity in maize roots, thus maintaining high leaf transpiration rate 
and relative water content of leaf under jasmonate conditions by increasing the water absorption of maize roots.]]></description>
<pubDate>2019/3/12 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[严加坤，严  荣，汪亚妮]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>严加坤，严  荣，汪亚妮</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201901001&flag=1]]></guid><cfi:id>121</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effect of Planting Density on Seed Yield and Dry Matter Production of Flemingia philippinensis]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201901002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The objective is to explore the effect of planting density on seed yield and dry matter 
accumulation of Flemingia philippinensis so as to provide atheoretical basis and practical guidance for the production of  【Objective】The objective is to explore the effect of planting density on seed yield and dry matter 
accumulation of Flemingia philippinensis so as to provide atheoretical basis and practical guidance for the production of]]></description>
<pubDate>2019/3/12 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[李小勇1，夏祥华 2，黄丹娜 2，蒋臻韬 3，马小军]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>李小勇1，夏祥华 2，黄丹娜 2，蒋臻韬 3，马小军</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201901002&flag=1]]></guid><cfi:id>120</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Research Progress in Biological Functions and Methods of Extraction, Seperation, Determination of Flavonoids from Camellia nitidissima]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201901003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Camellia nitidissima is rich in flavonoids. As an important natural product, flavonoids possess a variety 
of biological functions, such asoxidation resistance, blood sugar lowering, anti-cancer, anti-tumor and other effects. 
Among these functions, oxidation resistance is most prominent one and forms the basis of other functions. In order to 
realize the efficient extraction, separation and determination of flavonoids in C. nitidissima and to develop C. nitidissima
flavonoids product, this paper analyzed the flavonoids and the flavonoid constituent in C. nitidissima, introduced various 
biological functions of flavonoids and conducted the summary and research of the extraction (water extraction, organic 
solvent extraction, ultrasonic assisted extraction and enzymatic hydrolysis), separation (macroporous resin adsorption, 
chromatography and membrane separation) and determination (spectrophotometry, high performance liquid chromatography, liquid chromatography and mass spectrometry) methods of flavonoids in C. nitidissima. At present, the major extraction method 
of flavonoids in C. nitidissima is the organic solvent extraction method which combined with ultrasonic method, may achieve 
better extraction effect; the separation of flavonoids in C. nitidissima were mostly conducted by macroporous resin adsorption 
method and chromatography; spectrophotometry is the major method used for the determination of flavonoids in C. nitidissima
while high performance liquid chromatography and liquid chromatography-mass spectrometry have great application potential, 
which would provide theoretical support for development and utilization of the C. nitidissima.]]></description>
<pubDate>2019/3/12 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[张佩霞，于  波，邹春萍，黄丽丽，赵超艺，孙映波]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>张佩霞，于  波，邹春萍，黄丽丽，赵超艺，孙映波</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201901003&flag=1]]></guid><cfi:id>119</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Analysis on Correlation between Meteorological Factors and Rice Filling Speed and 1000-grain Weight in Central Guizhou]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201912001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】 The study was to analyze the correlation between meteorological factors and rice grain filling 
speed and 1000-grain weight in central Guizhou Province.【Method】Based on the daily meteorological data (wind speed, 
precipitation, temperature, sunshine duration, relative humidity and evaporation), grouting speed and 1000-grain weight 
in rice grouting maturity period from 2013 to 2017, the variation characteristics of potential evapotranspiration, grouting 
speed and 1000-grain weight were analyzed through the trend change rate. With the help of RDA, the correlation between 
meteorological factors and yield factors was discussed to further obtain the temperature suitability of rice during grain filling-maturity period.【Result】The results showed that only in 2016, the average daily potential evapotranspiration showed 
an increasing trend during the rice grain filling-maturity period. The rice grouting speed curve was single“peak”type in 
2013, 2014 and 2017, double“peak”type in 2015, and flat casting type in 2016. From 2013 to 2017, the 1000-grain weight 
of rice showed weak variation.【Conclusion】Monte Carlo Test showed that meteorological factors were positively correlated 
with grouting speed, and negatively correlated with the change of 1000-grain weight. The lowest temperature was the key factor 
affecting the grain filling-maturity yield of rice. From 2013 to 2017, the optimum temperature for rice during grout to maturity 
period was between 0.86-0.98, which required abundant heat for growth and development.]]></description>
<pubDate>2020/3/4 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[张　皓 1，2，翁　玲 3，刘宇鹏 4，吴　丹 5，金昭贵 1
，王禄静 1
，杨　涛 3]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>张　皓 1，2，翁　玲 3，刘宇鹏 4，吴　丹 5，金昭贵 1
，王禄静 1
，杨　涛 3</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201912001&flag=1]]></guid><cfi:id>118</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Comprehensive Analysis of Combining Ability of Agronomic Traits in Sweet Corn Inbred Lines]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201912002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The combining abilities of agronomic traits in super sweet corn inbred lines was investigated 
to provide a foundation for the breeding of excellent hybrids.【Method】The combining abilities and population genetic 
parameters of yield per plant, pericarp thickness, soluble sugar content, plant height, ear height, ear length, ear thickness, 
kernel number per row, rows per ear, barren ear tip, and 100-seed weight were investigated in 13 sweet maize inbred lines 
by using the complete diallel cross of Griffing method.【Result】According to the measurement values of yield per plant, 
pericarp thickness, and soluble sugar content, B6 was identified as high yield-excellent inbred line, B10 and B11 as highyield inbred line, and B13 as excellent inbred line. And 13 inbred lines were divided into multiple heterotic groups based 
on the combining ability effect values (CAEVs).【Conclusion】According to the scientific evaluation on the CAEVs of 
agronomic traits in 13 inbred lines, the inheritance law and correlation of different agronomic traits and the division of 
heterotic groups were explored, which will provide theoretical guidance for hybridization preparation and inbred lines 
screening by the reasonable utilization of sweet corn inbred lines in the future.]]></description>
<pubDate>2020/3/4 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[宫庆友，陈燕红，龚衍熙，陈川雁]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>宫庆友，陈燕红，龚衍熙，陈川雁</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201912002&flag=1]]></guid><cfi:id>117</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effects of Different Damage Treatments on Photosynthetic Characteristics and Chlorophyll Fluorescence Parameters of Aquilaria sinensis (Lour.) Spreng.]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201912003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The experiment was to study the effects of different damage treatments on the photosynthetic 
characteristics and fluorescence parameters of the leaves of Aquilaria sinensis, improve the formation rate of A. sinensis, 
facilitate the quality of A. sinensis close to the natural quality, meet the needs of medicine and health, maintain the health 
of the people, realize the protection and sustainable utilization of wild A. sinensis resources.【Method】By using 15-yearold A. sinensis trees as tested material and no any damage treatment as control group, different wound treatments on the 
trees were implemented in July（A:No cutting; B:1/3 cutting of lateral branch and lateral root; C:2/3cutting of lateral branchand lateral root; D:stem cutting-off). The photosynthetic characteristics and chlorophyll fluorescence parameters of A. sinensis 
(Lour.) Spreng was measured after treatments.【Result】The results showed that: (1) compared with the control group, the 
photosynthetic parameters of leaves in the three groups treated with B, C and D were significantly different, which may be due to 
the enhanced photosynthetic capacity of mesophyll cells after injury. (2) the photosynthetic parameters of the leaves of agarwood 
in the cut-off treatment(group D) increased significantly, indicating that the leaves of agarwood in the cut-off treatment had 
the strongest photosynthetic capacity. (3) The maximum photochemical efficiency (Fv/Fm) and PS Ⅱ potential activity (Fv/F0) 
of treatment A, B and C had no difference with those of control group. 【Conclusion】Under treatment D, the photosynthetic 
characteristics and fluorescence parameters of A. sinensis were significantly different from those of the control group and, stem 
cutting-off treatment improved the photosynthesis of A. sinensis significantly. Treatment A, B and C had no great influence 
on the growth of the trees, while the relationship between the photosynthesis capacity and the accumulation of photosynthetic 
products and agarwood formation rate remains to be further discussed.]]></description>
<pubDate>2020/3/4 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[吴文华 1，2，韦阳莲 3，蔡楚雄 3，郭　韵 1,2，曹洪麟 1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>吴文华 1，2，韦阳莲 3，蔡楚雄 3，郭　韵 1,2，曹洪麟 1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201912003&flag=1]]></guid><cfi:id>116</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Comparative Test Study on the Introduction of NewVarieties of Sweet and Waxy Corn in Yangchun]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201911001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was conducted to screen new varieties of fresh sweet and waxy corn suitable for 
cultivation in Yangchun.【Method】With Yuecainuo 2 as the control (CK), comparative experiments were carried out on the 
new varieties of Jingkenuo 928 and Yuebai sweet and waxy series introduced.【Result】The results showed that Jingkenuo 
928, Yuebaitiannuo 5, Yuebaitiannuo 6, Yuebaitiannuo 7, Yuebaitiannuo 8 and Yuebaitiannuo 9 were significantly superior 
to Yuecainuo 2 (CK) in terms of maturity, plant type, resistance, yield and quality. In the spring crop of 2019, the yield of 
6 tested new varieties increased by 8.09%, 30.26%, 15.09, 6.14% and 18.12%, respectively, compared with that of CK, 
with the difference above the significant level. More importantly, the total score of cooking quality of Yuebaitiannuo 6, 
Yuebaitiannuo 7, Yuebaitiannuo 9 and Jingkenuo 928 was significantly higher than that of CK.【Conclusion】The six new 
varieties of sweet and waxy corn tested showed the characteristics of early maturity, short strength, multi-resistance, high 
yield and high quality, which were all suitable for promotion and application in Yangchun City.]]></description>
<pubDate>2020/1/19 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[李　武 1
，吴　晓 2，卢文佳 1
，梁炳荣 2，欧　珊 2，陈家强 2，刘建华 1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>李　武 1
，吴　晓 2，卢文佳 1
，梁炳荣 2，欧　珊 2，陈家强 2，刘建华 1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201911001&flag=1]]></guid><cfi:id>115</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Analysis of Differences in Traits of Spring Rapeseed(Brassica napus L.) in Different Ecological Regions of Tibet]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201911002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The adaptability of spring rapeseed (Brassica napus L.) in different ecological regions 
of Tibet was studied in order to obtain the primary climatic factors which influenced the growth and development of 
spring rapeseed. 【Methods】Three varieties of spring rapeseed were planted in five pilots of different altitude ( Duilong 
County, Gongga County, Bailang County, Zhalang County and Lhasa City) to detect their agronomic and main quality 
traits.【Results】After being planted in the high-altitude ecological area, period of emergence to bolting of the spring 
rapeseed was postponed for 8 days (Zangyou 12), and bolting to beginning of flowering was postponed for 6 days (Jinghua 
165). The altitude was the greatest influence factor on the number of pods per plant, the decreased number of which was 
25 (Dadi 95). The maximum increased number of seeds per siliqua was 6.4 (Jinghua 165), and the 1000-seed weight was 
increased by 1.01 g (Zangyou 12). The content of oil was increased by 2.55% (Zangyou 12), the content of glucosinolate 
increased by 15.3 μmol/g (Dadi-95) and the content of erucic acid (Zangyou 12) increased by 5.00%. The result of 
correlation analysis showed that the number of pods per plant and seed number per siliqua presented a significantly 
positive correlation with latitude, altitude, rainfall, and extremely high temperature. The number of pods per plant 
was significantly negative correlated with the average evaporation. The 1 000-seed weight presented a significantlypositive correlation with the extremely low temperature and the average evaporation, while it presented a significantly 
negative correlation with altitude and extremely high temperature. The content of oil presented a significantly positive 
correlation with attitude, and a significant or extremely significant negative correlation with temperature factor. The 
content of glucosinolate presented a significantly positive correlation with latitude, altitude, and rainfall. The content of 
erucic acid showed a significantly positive correlation with altitude, while showed negative correlation with extremely 
high temperature.【Conclusion】The effects of ecological factors on the agronomic and quality traits of B. napus L. were 
different. In general, with the increase of altitude, the agronomic traits of spring rapeseed were poor (except for the trait 
of siliqua), the content of oil tended to be high quality, and the contents of glucosinolate and erucic acid tended to be 
inferior.]]></description>
<pubDate>2020/1/10 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[袁玉婷]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>袁玉婷</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201911002&flag=1]]></guid><cfi:id>114</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Study on the Fertilizer Efficiency of CompoundBiofertilizer applying in Wheat]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201910001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】In order to explore the application effect of compound biofertilizer on wheat, this study 
selected "plateau 338" wheat as test material, and evaluated its application efficiency through field test.【Method】Four 
experimental groups were set up in the experiment, which were applied with compound biofertilizer, compound fertilizer, 
substrate only and no fertilization, respectively. The plant height, dry matter weight and yield per hectare at harvest time 
in the four groups were measured at elongation stage and grain filling stage, and the differences of various indexes between 
different experimental groups were compared.【Result】The results showed that the dry matter weight of the wheat treated 
with compound biofertilizer increased by 7.1%~7.5% and 1.0%~10.8% respectively in the elongation and grain filling stages 
compared with that of the conventional compound fertilizer group, by 3.1%~5.3% and 2.5%~4.5% respectively compared 
with that of the substrate group, and by 20.3%~29.2% and 19.7%~25.8% respectively compared with that of the control 
(no fertilization) group. On the yield per hectare of the wheat, compared with the blank control group, the yield increased by 
67.4%~75.6%; compared with the conventional compound fertilizer group, the yield increased by 12.4%~13.2%; compared with the substrate group, the yield increased by 8.9%~9.4%, and the differences were significant.【Conclusion】In conclusion, 
the application of compound biofertilizer can significantly promote the growth of wheat, improve the yield per hectare of wheat, 
and increase the economic benefits of wheat planting. This study can provide certain preliminary basis and theoretical basis for 
the large-scale promotion and application of compound biofertilizer in wheat.]]></description>
<pubDate>2019/12/17 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[张志鹏 1,2，蔡燕飞 1
，段继贤 2，王宗抗 2]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>张志鹏 1,2，蔡燕飞 1
，段继贤 2，王宗抗 2</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201910001&flag=1]]></guid><cfi:id>113</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Culture in vitro and Rapid Propagation of Ardisia gigantifolia]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201910002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】 Ardisia gigantifolia is an important traditional Chinese herbal medicine, which has relied 
on harvesting from nature for a long time, resulting that resources are almost exhausted. Therefore, it is urgent to domesticate 
and plant such medicine. In this study, stems of A. gigantifolia were took as the explants to establish a rapid propagation 
method by tissue culture in vitro.【Method】 The explants were sterilized with 70% alcohol and 0.1% mercury chloride 
solution for different treatment time. The obtained aseptic explant were inoculated in the modified MS medium containing 
6-BA, KT and IBA for cluster buds proliferation. The 1/2 modified MS medium(as basal medium) with NAA and IBA were 
used to induce rooting for the adventitious buds. After seedling refining, the regenerated plants were transplanted. 【Result】 
The result showed that disinfecting the stems via 70% alcohol treatment for 30 seconds with 0.1% mercuric chloride solution 
treatment for 7-9 mins was the best method. The modified MS medium with 1.0 mg/L 6-BA KT and 0.05 mg/L IBA was the 
optimal combination for inducing and reproduction. The 1/2 MS medium with 0.2 mg/L NAA and 0.3 mg/L IBA was suitable 
for rooting. 【Conclusion】 By optimizing the sterilization method, proliferation and rooting medium of explants in rapid 
propagation system, the method for in vitro culture and rapid propagation of A. gigantifolia was established, which provided 
seedling foundation for artificial planting.]]></description>
<pubDate>2019/12/17 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[蔡时可，梅 瑜，顾 艳，谢梅新，王继华]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>蔡时可，梅 瑜，顾 艳，谢梅新，王继华</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=201910002&flag=1]]></guid><cfi:id>112</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Investigation and Analysis of Crops Germplasm Resources in Guangdong Province]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202009001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】In order to understand and find out the actual situation of crop germplasm resources in Guangdong Province, the Third National Action of Crop Germplasm Resources Survey and Collection（hereinafter referred to as Action） was launched in Guangdong in 2016.【Method】From July 2016 to December 2018, the project team conducted field visits and resource survey and collection in 92 counties （cities, districts） of Guangdong Province through the combination of massive screening, collection and systematic investigation.【Result】（1）The Action was performed in 687 towns （including streets, townships and village committees） in 19 municipalities, with a geographical span of about 770 km from east to west and 590 km from north to south, realizing full coverage of agricultural counties （cities, districts） in Guangdong.（2） The average planting age of resources in local area was 45 years, 8.9% of which was over 100 years old. The average age of the farmers providing resources was 56 years old, and 2.72% of them were from Yao, Zhuang and She nationalities.（3） A total of 6 873 germplasm resources were collected, including 2 288 food crops, 1 445 fruit trees, 2 189 vegetables, 766 cash crops, 3 forage green manure and 182 other germplasms, involving 283 species in 192 genera and 83 families. The major resources were edible beans of grain crops, rhizomes of vegetables, evergreen fruit trees and economic crops such as sugar, tea, mulberry and tobacco, accounting for 52.12% of the total collection. The top ten families were Leguminosae, Gramineae, Cucurbitaceae, Dioscoreaceae, Liliaceae, Cruciferae, Zingiberaceae, Araceae, Camellia and Rutaceae, accounting for 70.3% of the total collection. The major species were soybean, rice, cowpea, sweet potato, peanut, taro, tea tree, loofah, ginger, rice bean, pumpkin, garlic, papaya, leaf mustard and litchi, accounting for 49.5% of the total collection.【Conclusion】The crop germplasm resources in Guangdong Province were found out through the“Action”, and salvage collection of local ancient varieties, ancient bred species, wild relatives and endangered wild germplasm resources was conducted, providing the possibility for germplasm innovation and achieving breakthrough varieties.]]></description>
<pubDate>2020/11/7 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[WU Rouxian, XU Hengheng, GAO Jiadong, GAO Yintao, CHEN Bingxian, ZHANG Wenhu, LIU Jun]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>WU Rouxian, XU Hengheng, GAO Jiadong, GAO Yintao, CHEN Bingxian, ZHANG Wenhu, LIU Jun</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202009001&flag=1]]></guid><cfi:id>111</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Thermal Resources Variation in Early Spring and Feasibility Analysis on Early Rice Sowing in Advance in Double Cropping System]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202009002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was to identify the variation characteristics of early spring thermal resources and demonstrate the climate feasibility for early rice sowing in advance for the sake of higher utilization rate of climatic resources and better early rice planting mode.【Method】Based on the surface observation data from 79 meteorological stations in Jiangxi Province during 1960-2019, the temporal and spatial distribution and variation characteristics of early spring （from Mar 1st to Apr 10th） thermal resources were analyzed. According to the requirements of climate conditions for early rice sowing, the estimate methods of climate feasibility for early rice sowing in advance were built, and the feasibility of early spring thermal resources variation on early rice sowing in advance in double cropping system was analyzed.【Result】Both average temperature and effective accumulated temperature in early spring increased significantly in recent 60 years （1960-2019）, with the climatic trend rates of 0.3℃ /10a and 10.1℃·d/10a, respectively. The occurrence frequency of warm sunny days in early spring showed an increasing trend, and the occurrence frequencies of 10℃ warm sunny days and 12℃ warm sunny days in the recent 30 years （1990-2019） were 80% and 73% respectively, which increased by 11% and 9% respectively compared with those of the previous 30 years （1960-1989）. In the past 60 years, the climate was feasible for sowing with thermal shed in advance in 75% counties and for direct sowing in advance in 68% counties, and the frequency of feasible years for early sowing showed an upward trend.【Conclusion】In the past 60 years, the thermal resources in early spring showed the variation characteristics of increased average temperature and effective accumulated temperature with more frequent warm sunny days, which had feasible climate for early rice sowing in advance in double cropping system.]]></description>
<pubDate>2020/11/7 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[GUO Ruige, CAI Zhe, LIU Wenying]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>GUO Ruige, CAI Zhe, LIU Wenying</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202009002&flag=1]]></guid><cfi:id>110</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Study on the Impact of Projected Temperature and Precipitation Changes on Yields of Winter Wheat in Shanxi Province]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202009003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】Winter wheat is an important grain crop in Shanxi Province, and climate change has a significant impact on winter wheat yield. Model simulations are used to evaluate the impacts of climate changes on winter wheat yields in Shanxi Province, so as to provide an important scientific basis for winter wheat planting planning in Shanxi Province.【Method】The meteorological data of 2017-2018 and the winter wheat yield data at county level of 2018 in Shanxi Province were used. And DNDC model was applied to simulate and verify the winter wheat yields in Shanxi Province. Eight scenarios（including temperature increasing 1 or 2℃ , precipitation decreasing 20% or 10% and the coupling variation of temperature and precipitation）were further simulated to evaluate the possible influence of future climate changes on winter wheat yields.【Result】DNDC model showed good performance in simulating the overall level （4 335.6 kg/hm2） of winter wheat yield in Shanxi Province, with the average error of 4.63%, and the error was mainly attributed to terrain and climate differences.  【Conclusion】Under the 8 climate change scenarios, different temperature increases had different impacts on yields. Under the scenario of an average temperature increase of 1℃ , the yield of winter wheat in Shanxi Province decreased by 4.60%, while under the scenario of temperature increase of 2℃ , the yield increased by 16.44%; 10% and 20% decrease of precipitation had negative impacts on yields, indicating that water was still an important factor restricting the yields of winter wheat; while the coupling effect of temperature increase and precipitation decrease had positive effect on the yields, with the increase by 7.41%-15.84%. In the future, it is necessary to evaluate the impacts of climate changes on agriculture from the perspective of crop rotation.]]></description>
<pubDate>2020/11/7 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[ZHANG Yiwei1, ZHANG Jianxin2]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHANG Yiwei1, ZHANG Jianxin2</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202009003&flag=1]]></guid><cfi:id>109</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effect of Ethyl Methane Sulfonate on Seedling Formation of Andrographis paniculata]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202009004&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】Andrographis paniculata （Burm.F.） nees is one of the traditional Chinese medical materials. Establishing a technical system of ethyl methane sulfonate （EMS） mutation and creating a mutant resource library with rich phenotype variation will help to provide new materials for functional genomics research and variety breeding.【Method】The optimal conditions of A. paniculata mutant bank mutation were obtained by comparing and analyzing the effects of different EMS concentrations and treatment time on seed germination and seedling growth. The morphologies of mutants with different phenotypes after mutation were evaluated and identified.【Result】Among 5 treatments, the germination rate and seedling rate of seeds treated by EMS for 4 hours were significantly higher than those of the control. With the increase of EMS concentration and treatment time, the germination rate of A. paniculata seeds decreased and the mutagenesis rate increased. Among them, the highest mutagenesis rate （3.5%） was obtained under the treatment with 0.5% EMS concentration for 12 hours, followed by the treatment with 0.8% EMS concentration for 8 hours. Compared with the control, the induced mutant plants showed significant phenotypic differences. Furthermore, EMS induced mutations in a variety of A. paniculata plants, including leaf color, blade profile, leaf arrangement, plant height, branch and flower axis.【Conclusion】EMS mutagenesis method of A. paniculata seeds was established successfully. Many types of plants with specific phenotypes were obtained, which provided new materials for functional genomics research and new variety selection.]]></description>
<pubDate>2020/11/7 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[ZHOU Fang，MEI Yu，GU Yan，CAI Shike，WANG Jihua]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHOU Fang，MEI Yu，GU Yan，CAI Shike，WANG Jihua</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202009004&flag=1]]></guid><cfi:id>108</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effects of Nitrogen Sources on Manganese Toxicity in Sugarcane]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202008001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was to explore the effects of nitrogen（N）sources on manganese（Mn）toxicity in sugarcane.【Method】Effects of N sources on leaf chlorosis, plant Mn absorption and distribution, and leaf photosynthetic and fluorescence characteristics in sugarcane seedlings were studied through the hydroponic tical.【Result】Under excessive Mn stress, Mn content in sugarcane seedlings increased significantly while leaf chlorophyll content (SPAD value)decreased significantly. Mn absorption of the plant and the seedling chlorosis affected by N sources were indicated as follows: the decrease in leaf SPAD value and seedling chlorosis were shown in the plants exposed to 0.5 mmol/L Mn solution with nitrate as the N source, while Mn had no significant effect on the plants with ammonium as the N source. There was no significant difference in Mn ratio in elder leaves to young leaves, Mn ratio in young leaves blade to the sheath and Mn distribution in leaf cell saps between the seedlings with different N sources after Mn treatment, however, Mn absorption and Mn contents of plants with ammonium source were significantly less than those of the plants with nitrate source. The differences in plant Mn absorption and content and the difference in leaf SPAD values between the plants with different N sources tended to increase with the increase of Mn treatment concentration（0, 0.1, 0.2 mmol/L）and Mn treatment time（0-21 d）, respectively. Similarly, the plants with ammonium source had higher leaf photosynthetic rate, transpiration rate, stomatal conductance, actual photosynthetic efficiency, photochemical quenching coefficient and lower quantum yield of regulatory energy dissipation.【Conclusion】Mn-induced chlorosis in sugarcane seedings could be effectively alleviated by ammonium application.]]></description>
<pubDate>2020/9/27 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[WANG Xiaoxia, CHEN Yangmingzhu, QIN Mei, XIAO Jinglin, LING Guizhi, LI Xiaofeng]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>WANG Xiaoxia, CHEN Yangmingzhu, QIN Mei, XIAO Jinglin, LING Guizhi, LI Xiaofeng</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202008001&flag=1]]></guid><cfi:id>107</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Study on Air-curing Modes of Burley Tobacco Adapted to Alpine Tobacco Areas]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202008002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was conducted to improve the phenomena of barn rot and mildew during aircuring process in alpine tobacco area and raise the air-curing quality of burley tobacco.【Method】A control experiment was conducted among four air-curing modes: simple arched air-curing shed, simple arched heating air-curing shed,“89”heating drying room and“89”standard drying room（CK）.【Result】The effects of simple arched air-curing shed and simple arched heating air-curing shed on the average temperature and relative humidity control during air-curing process were better than those of“89”heating drying room and“89”standard drying room. The simple arched heating air-curing shed mode had the highest economic enefits, with yield improved by 12.35%, output value increased 8433.90 yuan/hm2, rate of high and middle quality tobacco raised by 7.82% and proportion of tobacco mildew reduced to 4.09%. The simple arched air-curing shed mode had lower economic benefits than those of simple arched heating air-curing shed mode, the tobacco mildew rate could be controlled at 4.17% by such mode.【Conclusion】Considering the economic benefits and cost inputs of the four aircuring modes, simple arched air-curing shed and simple arched heating air-curing shed were more suitable for the air-curing requirements and sustainable development of burley tobacco in alpine tobacco areas.]]></description>
<pubDate>2020/9/27 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[JI Fei, DING Caifu, WU Baocheng, LU Shengguo, LI Shijie, WEN Tao, DUAN Xiaolin]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>JI Fei, DING Caifu, WU Baocheng, LU Shengguo, LI Shijie, WEN Tao, DUAN Xiaolin</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202008002&flag=1]]></guid><cfi:id>106</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effects of Seeding Date, Seeding Rate and Nitrogen Rate on Yield and Agronomic Characters of Direct - seeding Rape Dadi 95]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202007001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The suitable seeding date, seeding rate and nitrogen rate of direct - seeding rape Dadi 95 were determined in order to provide technical guidance for its cultivation and promotion. 【Method】The growth process and agronomic characters of Dadi 95 were investigated under different seeding date, seeding rate and nitrogen rate combinations by using split plot design.【Result】The growth process of rape was mainly affected by seeding date. Under the same seeding date with different seeding rates and fertilization amounts, there was no obvious effect on the growth process of rape. The differences of plant height, branch position, branch number, length of main inflorescence, pod number of main inflorescence, pod spacing, pod number per plant, pod length, yield per plant and plot yield reached an extremely significant level in different seeding date treatments. The differences of plant height, branch position and branch number reached an extremely significant level under different seeding rates. Seeding date had the greatest impact on the yield. Early seeding could increase the yield of rape. The plot yield was positively correlated with the main sequence length, the pod number per plant and the yield per plant, but negatively correlated with the pod spacing.【Conclusion】When seeding on April 12, with seeding rate and urea amount set as 0.75 kg and 15 kg/667m2 respectively, the yield of rape was the highest, which was 38.64% higher than the average. For early seeding of spring rape, proper increase of seeding and fertilization rates could effectively increased the yield of rape. For late seeding of spring rape, low-density and high-level fertilization could make the plant grow vigorously, but it was not conducive to the development of group yield, and proper increase of density could ensure the overall yield.]]></description>
<pubDate>2020/9/8 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[LI Shimeng, YUAN Yuting, Nimaciren, WANG Jinxiong]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LI Shimeng, YUAN Yuting, Nimaciren, WANG Jinxiong</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202007001&flag=1]]></guid><cfi:id>105</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effects of PEG Simulation Drought Stress on Growth Characteristics of Spring Rapeseed（Brassica campestris L.）at Bud Stage]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202007002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The polyethylene glycol 6000（PEG6000）solution was used to simulate drought stress to study the root morphological characteristics, physiological and biochemical characteristics of the seedlings of spring rapeseed（Brassica campestris L.）at bud stage, and evaluate the drought resistance of different spring rapeseed cultivars（lines）.【Method】Different concentrations（0%, 5%, 10%, 15%, 20%, 25%）of PEG6000 solutions were used to the study the effect of drought stress on the growth, physiological and biochemical characteristics of four spring cultivates（lines）rapeseed seedlings. Meanwhile, the drought resistant spring rapeseed cultivars（lines）were screened out.【Result】PEG6000 solutions had significant inhibitory effects on the seedling rate, main root length, seedling height, fresh quality per plant and relative vigor index of four spring rapeseed cultivars（lines）at bud stage. When the PEG6000 solution concentration was in the range of 15%-20%, the relative vigor index of spring rapeseed of four cultivars（lines）was 0.50-0.60. When the PEG6000 concentration was 0%-15%, the activity of superoxide dismutase（SOD）, peroxidase（POD）and catalase（CAT）were positively correlated with the stress mass fraction. The enzyme activity reached the peak when the PEG6000 concentration was 15%-20%, and then decreased. In the low stress concentration range（5%-15%）, soluble sugar（SS）, soluble protein（SPr）, proline（Pro）, malondialdehyde（MDA）were positively correlated with PEG6000 solution concentration.【Conclusion】The relative vigor index and seedling height of spring rapeseed could be used as drought resistance screening indicators, and 15%-20% PEG6000 solution concentration as the optimum concentration to simulate drought stress for spring rapeseed. And the drought resistance line 104005 was selected.]]></description>
<pubDate>2020/9/8 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[GAO Xue, Nimazhaxi, LIU Guoyi, TAN Haiyun]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>GAO Xue, Nimazhaxi, LIU Guoyi, TAN Haiyun</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202007002&flag=1]]></guid><cfi:id>104</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Root Characteristics and Drought Resistance of Tibetan Spring Rapeseed（Brassica napus L.）at Bud Stage Under PEG Simulation Drought Stress]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202007003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was conducted to understand the effects of drought stress on the root morphology of Tibetan spring rapeseed（Brassica napus L.）and its relationship with drought resistance, and select drought-resistant varieties（lines）of spring rapeseed.【Method】With quartz sand as the substrate, 15%（W/V）PEG solution was used to simulate the drought stress to study the relationship between the root characteristics and drought resistance of Tibetan spring rapeseed at bud stage, and to screen drought-resistant spring rapeseed varieties（lines）.【Results】Drought stress had a greater impact on the relative root weight and relative root-shoot ratio of Tibetan spring rapeseed, and had the least effect on root length. There was no difference in drought resistance between self-breeding materials and those imported from mainland China. Correlation analysis showed that the vitality index indicated an extremely significant positive correlation with relative lateral root number（r2= 0.443*）and relative root length（r2= 0.555*）. Cluster analysis of 28 spring rapeseed varieties（lines）showed that these varieties could be divided into 5 groups at the Euclidean distance of 11, among which, group A had the strongest resistance, with an average relative lateral root number of 69.14, an average relative root length of 96.09%, an average relative root weight of 52.58%, an average relative root-shoot ratio of 63.16%, and an average relative vitality index of 0.59.【Conclusion】The relative lateral root number, relative root length and relative vitality index could be used as drought-resistant identification indicators of spring rapeseed, and other indicators used as auxiliary. In combination of the relative vitality index and cluster analysis, three materials（158106-2, 164046-2, 188013-1）with strongest drought resistance were screened.]]></description>
<pubDate>2020/9/8 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[YUAN Yuting]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>YUAN Yuting</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202007003&flag=1]]></guid><cfi:id>103</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Parentage Analysis of Eighteen Yuetang Series of Sugarcane Varieties and Breeding Suggestions]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202007004&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was conducted to understand the genetic basis of Yuetang series of sugarcane varieties and provide references for selecting parents and making cross combinations in future sugarcane breeding.【Method】The genetic relationship of 18 Yuetang series of sugarcane varieties cultured in recent years were analyzed. The parentage of the tested sugarcane varieties were analyzed by generations and the pedigree diagram was drawn.【Result】A total of 18 parent varieties（lines）were used for the bred of the 18 tested sugarcane varieties. The most frequently used parent varieties（lines）were CP72-1210, Yuetang 93-159 and Yuenong 73-204. Among the 18 tested sugarcane varieties, a total of 13 varieties were bred from these parent varieties, accounting for 72.22% of the total number of the tested varieties. The source of cytoplasm for all varieties was from Bandjarmasin hitam. The basal germplasm was from 21 species including 11 of Saccharum offi cinarum, 3 of S. spontaneum, 2 of S. barberry, 3 of S. sinensis, 1 of S. robustum and Sorghum bicolor（L.）Moench. All of the sugarcane varieties were developed based on the introduced varieties, and they could be traced back to POJ2878 or its sib variety POJ2725, F134, F108, CP49-50 and Co290. Therefore, the genetic basis was still a very serious problem.【Conclusion】In order to broaden genetic basis of current cultivars, parents with farther genetic relationship should be chosen to make cross combinations, and modern biotechnology breeding methods be used to breed new fine varieties.]]></description>
<pubDate>2020/9/8 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[LUO Qingwen, PAN Fangyin, AO Junhua, QI Yongwen, WU Jiayun, PENG Lichong, LIANG Qiru, WEN Mingfu]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LUO Qingwen, PAN Fangyin, AO Junhua, QI Yongwen, WU Jiayun, PENG Lichong, LIANG Qiru, WEN Mingfu</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202007004&flag=1]]></guid><cfi:id>102</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Analysis of Transcriptome and Exploration of Genes Related to Flavonoid Biosynthesis in Sauropus spatulifolius Beille]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202007005&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was conducted to obtain the transcriptomic characteristics and to identify the synthesis pathway genes related to flavonoid biosynthesis in Sauropus spatulifolius Beille.【Method】The high-throughput sequencing platform Illumina HiSeqTM 4000 was used to perform transcriptome sequencing and the unigene was assembled through de novo assembly by Trinity software. Then the functional annotation and metabolic pathway analysis of these unigenes were performed based on sequence homology.【Result】After quality control of sequencing data, a total of 88 396 692 highquality reads were obtained, and 46 600 unigenes were obtained through de novo assembly. The N50 length was 1 441 bp, with an average length of 877 bp. A total of 34 188（73.36%）unigenes were annotated in NR, SwissProt, KOG, GO and KEGG databases. Among them, 6 902 unigenes were annotated in the KEGG database, involving 132 metabolic pathways. It was identified that 56 unigenes were involved in flavonoid biosynthesis, 9 unigenes involved in flavone and flavonol biosynthesis, and 2 unigenes involved in isoflavonoid biosynthesis. 1 256 transcription factors（TFs）and 3 842 plant resistance genes（R genes）were also identified. MISA analysis showed that 46 600 unigenes contained 3 356 simple sequence repeats（SSRs）.【Conclusion】Transcriptome information characteristics of S. spatulifolius Beille were obtained by the high-throughput sequencing technology and biological information analysis, which provided a research basis for future researches to identify functional genes, flavonoid secondary metabolic pathways and their regulatory mechanisms.]]></description>
<pubDate>2020/9/8 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[XU Shiqiang1, MEI Yu1, CAO Yang2,3, HUANG Zhina4, CAI Shike1, WANG Jihua1,3]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>XU Shiqiang1, MEI Yu1, CAO Yang2,3, HUANG Zhina4, CAI Shike1, WANG Jihua1,3</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202007005&flag=1]]></guid><cfi:id>101</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effects of Different Arbuscular Mycorrhizal Fungi on Growth and Volatile Oil Accumulation of Pogostemon cablin]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202007006&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】Pogostemon cablin（Blanco）Benth, a medicinal plant, is facing the problems of germplasm resource depletion and product quality degradation, which threaten its safety, stability and effectiveness. The arbuscular mycorrhizal fungi were selected to inoculate P. cablin to understand their effects on the growth and medicinal active ingredients of P. cablin in order to improve the quality, increase the output and meet the needs of drug use.【Method】Pot experiment was performed with three groups: P. cablin was inoculated with Claroideoglomus etunicatum（CE）and Funneliformis mosseae（CE）, and the blank control without inoculation. The differences in various indexes of P. cablin during growth period and after harvest were compared.【Result】The plant height, basal stalk diameter, dry matter weight and yield of volatile oil of P. cablin treated with FM were 9.0%, 9.8%, 21.4% and 0.59% higher than those of the control group. The plant height, basal stalk diameter, dry matter weight and yield of volatile oil of P. cablin treated with CE were 18.6%, 14.4%, 51.4% and 1.40% higher than those of the control group.【Conclusion】Different arbuscular mycorrhizal fungi have different infection ability to P. cablin. FM and CE can promote the growth of P. cablin, increase the content of indoleacetic acid and inhibit the production of abscisic acid. However, C.etunicatum has a better effect on the overall gain of P. cablin and the accumulation of the most important volatile oil in the production of P. cablin.]]></description>
<pubDate>2020/9/8 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[LIU Lu1, MA Junqing1, LIAO Honglin1, SUN Chenyu1, WANG Yong2, HUANG Jinghua1，2]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LIU Lu1, MA Junqing1, LIAO Honglin1, SUN Chenyu1, WANG Yong2, HUANG Jinghua1，2</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202007006&flag=1]]></guid><cfi:id>100</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effect of RNA Interference Triggered by Small Fragment of EuCAD Gene on Lignin Synthesis in Tobacco]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202006001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study aimed to explore the key sequence of cinnamoyl alcohol dehydrogenase（CAD）gene of Eucalyptus urophylla and use them to regulate lignin synthesis.【Method】Sequence analysis of EuCAD gene was carried out by bioinformatics method. According to the distribution of conservative domain of coding protein, a 44 bp key sequence was obtained to construct RNA interference vector and transformed to tobacco. Transgenic plants were obtained and phenotypes such as gene expression and lignin content were detected.【Result】Twenty-eight transgenic lines were obtained, which grew normally as same as the wild type. Three transgenic lines were randomly selected for detection. The results showed that the expression level of CAD gene was significantly lower than that of wild type. The largest decline was observed in line R1 which decreased to 12.51% of the wild type. It was found that the stem diameter of line R1 was the same as that of the wild type, but the xylem thickness was significantly lower than that of the wild type, which decreased by 11.75% at the 4th node and 10.06% at the 6th node. The lignin content of the stem in line R1 decreased by 15.26% compared with that of the wild type. The results showed that the RNAi fragment significantly inhibited the expression of CAD gene in tobacco and affected the lignin synthesis of tobacco.【Conclusion】The small fragment of EuCAD gene screened by sequence analysis can significantly affect lignin synthesis in tobacco by triggering RNA interference, which provides a technical reference for the study on the regulation of lignin synthesis in E. urophylla.]]></description>
<pubDate>2020/8/10 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[CHEN Bowen, XIAO Yufei, LI Junji, ZHANG Ye, QIN Zihai, ZHANG Xiaoning, LIU Hailong]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>CHEN Bowen, XIAO Yufei, LI Junji, ZHANG Ye, QIN Zihai, ZHANG Xiaoning, LIU Hailong</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202006001&flag=1]]></guid><cfi:id>99</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Introduction and Screening Test of Red-skinned Potatoes in Guangdong]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202006002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study is to screen out red-skinned potato varieties（lines）suitable for planting in 
Guangdong area to enrich the potato varieties in that province.【Method】With Favorita as the control, a comparative 
experiment was carried out on the introduced red-skinned potato varieties（lines）, and the phenological period, agronomic 
characters, economic characters and yields of various varieties（lines）were investigated.【Result】All the tested varieties 
could mature in Guangzhou. Among them, Qingshu 9, Huashu 1, S14-1743, S14-1747 had a greater yield increase than the 
control. Qingshu 9 had the highest yield of 37 500.0 kg/hm2, which increased by 37.0% compared with the control; Huashu 1 
ranked second with a yield of 35 912.7 kg/hm2, which was 31.2% higher than that of the control; S14-1743 ranked third with 
a yield of 34 722.2 kg/hm2, which was 26.8% higher than that of the control; S14-1747 ranked fourth with a yield of 33 333.3 
kg/hm2, which was 21.7% higher than that of the control. Meanwhile, the above four varieties had lower disease incidence, 
strong growth potential, shallow or medium eyes, and high commodity rate.【Conclusion】Qingshu 9, Huashu 1, S14-1743,S14-1747 showed higher yield and good disease resistance. It is suggested that four varieties（lines）should be planted in 
some place for comparison test in the future to determine their regional adaptability.]]></description>
<pubDate>2020/8/10 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[LUO Huanming, LI Chengchen, SUO Haicui, SHAN Jianwei, AN Kang, WANG Li, LIU Jitao, LI Xiaobo]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LUO Huanming, LI Chengchen, SUO Haicui, SHAN Jianwei, AN Kang, WANG Li, LIU Jitao, LI Xiaobo</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202006002&flag=1]]></guid><cfi:id>98</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Research Progress in Medicinal Plant of Ficus microcarpa]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202006003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Ficus microcarpa, a kind of tree belonging to Ficus of Moraceae Family, is one of the traditional Chinese 
medicinal materials in China. With the functions of relieving cough and asthma, anti-inflammation and bacteriostasis, it 
is often used to treat respiratory diseases in Lingnan area, and is one of the main raw materials of Chinese patent medicine 
for relieving cough. F. microcarpa is evergreen all the year round and has a beautiful tree shape. It is also the preferred 
street tree for urban greening in south China. However, there are fewer researches on F. microcarpa at home and abroad, 
mainly focusing on the characteristics of greening plants, with weak researches on medicinal plants. There are shortages 
in the evaluation and selection of germplasm resources, deep processing technology and efficient utilization of resources 
of F. microcarpa. The researches on the types and mechanism of the effective components of F. microcarpa have not been 
conducted deeply, lacking of quality standard for the relationship between the quantity and the effect of dry extract in 
production, which seriously restricts the development and application of the medicinal value. With the greater importance 
attached to the development and utilization of F. microcarpa, it shows enormous application prospect and economic benefits. 
The research and utilization of F. microcarpa in pharmacognosy, chemical composition, quality process, pharmacological 
activity and clinical application are reviewed in order to provide theoretical basis for better comprehensive utilization.]]></description>
<pubDate>2020/8/10 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[LIU Min1, HE Menglu1, MEI Yu1, CHEN Xinquan2, WANG Jihua1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LIU Min1, HE Menglu1, MEI Yu1, CHEN Xinquan2, WANG Jihua1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202006003&flag=1]]></guid><cfi:id>97</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Research Progress on Identification and Analysis of lncRNA in Major Crops]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202005001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[With the advances in genomics and bioinformatics techniques, particularly high-throughput sequencing technology, many transcriptional units without protein-coding potential have been discovered. Among them, long non-coding RNAs（lncRNAs）are non-coding RNAs that are longer than 200 nt in length, which have unique secondary structures and do not encode proteins. lncRNAs can function in both nuclear and cytoplasmic compartments. A lot of evidence shows that more and more people have put great attention to the importance of lncRNAs as they are regarded as regulators of almost every cellular process. LncRNAs primarily interact with mRNA, DNA, protein, and miRNA and consequently regulate gene expression at the epigenetic, transcriptional, post-transcriptional, translational, and post-translational levels in may ways. LncRNAs-mediated regulation in animals has been extensively studied, while the research on lncRNAs in plants is just beginning. Recently, many new research results have shown that lncRNAs play a very important role in the process of plant stress, growth and system evolution. This article mainly summarizes the source and classification of lncRNAs and the regulatory mechanism of lncRNAs in plant development, and lists the main database resources that can be used for the analysis of plant lncRNAs. In addition, the research situation of lncRNAs in major crops such as corn, rice and wheat are summarized to provide a certain reference for future exploration on the mechanism of plant lncRNAs and its application in crops.]]></description>
<pubDate>2020/7/15 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[ZHANG Aijing1, GUO Xingyu2, HE Haobo1, MA Bohan1, LI Zeyuan1, ZHAO Qiuzhu1, LIU Mingming1, YAO Dan1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHANG Aijing1, GUO Xingyu2, HE Haobo1, MA Bohan1, LI Zeyuan1, ZHAO Qiuzhu1, LIU Mingming1, YAO Dan1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202005001&flag=1]]></guid><cfi:id>96</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Research Advances and Applications of Rice Grain Quality Traits]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202005002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Rice is one of the most important crops in China, and the improvement of its grain quality is the wish of every breeder. With the improvement of living standard and consumption level, people's demands for rice grain quality are also increasing. At present, improving rice quality has become an important goal for breeders to carry out rice grain quality breeding. The composition of rice grain quality traits, factors affecting rice quality and analysis technology of rice grain quality traits were systematically introduced. The cloning and functional studies of genes related to rice appearance quality, processing quality（grain shape, chalkiness）, cooking and eating quality（amylose content, gelatinization temperature and fragrance）, nutritional quality（protein）, and applications of important rice grain quality genes in conventional and modern breeding technologies were summarized. The analysis technology of rice quality and the application of rice grain quality trait related genes in breeding were prospected in order to provide references for rice quality analysis technology and the improvement of rice quality and quality breeding, improve the diversity of rice varieties and enrich rice germplasm resources.]]></description>
<pubDate>2020/7/15 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[FANG Zhiqiang1,2, LU Zhanhua1, WANG Shiguang1, LIU Wei1, LU Dongbai1, WANG Xiaofei1, HE Xiuying1,2]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>FANG Zhiqiang1,2, LU Zhanhua1, WANG Shiguang1, LIU Wei1, LU Dongbai1, WANG Xiaofei1, HE Xiuying1,2</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202005002&flag=1]]></guid><cfi:id>95</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Salt Tolerance Trial of Different Sweet Potato Varieties at Seedling Stage]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202004001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was to select sweet potato varieties with strong salt tolerance.【Method】Seedlings of seven different sweet potato varieties, Funingzi 3, Fushu 604, Guangshu 87, Jishu 26, Longshu 24, Longshu 9 and Pushu32, were exposed to 150 mmol/L NaCl under pot cultivation, to evaluate their salt tolerance. The growth increment, relative growth increment, leaf area, plant fresh weight, plant dry weight, plant death rate, salt injury rate and injury index of seedlings were analyzed and evaluated.【Result】The results showed that, with 150 mmol/L NaCl stress for 15 days, the growth, relatively growth, leaf area, plant dry weight and wet weigh of all the seven varieties decreased significantly. The death rate, the salt injury rate and the salt injury index of Jishu 26 seedlings were significantly lower than those of the other 6 varieties, while all indicators of Funingzi 3 were higher than those of the other 6 varieties. Among the seven varieties, Jishu 26 had the best salt tolerance, while Funingzi 3 had the worst.【Conclusion】In combination with various indicators, the salt tolerance of the seven varieties was showed as: Jishu 26 ﹥ Fushu 604 ﹥ Guangshu 87 ﹥ Longshu 9 ﹥ Pushu32 ﹥Longshu 24 ﹥ Funingzi 3. According to injury index and actual performance, Jishu 26, Fushu 604 and Guangshu 87 were high salt tolerant varieties, Longshu 9 and Pushu32 were moderate salt tolerant varieties, while Longshu 24 and Funingzi 3 were low salt tolerant varieties.]]></description>
<pubDate>2020/6/16 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[CUI Jichao, ZHONG Yi, ZHONG Yuyang, YU Jinjiang, WU Xiaoxia]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>CUI Jichao, ZHONG Yi, ZHONG Yuyang, YU Jinjiang, WU Xiaoxia</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202004001&flag=1]]></guid><cfi:id>94</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Analysis and Comprehensive Evaluation of Main Agronomic Traits of Ten New Lines of Cassava]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202004002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】New cassava lines suitable for cultivation in Yunnan were selected to provide a scientific basis for variety approval and production promotion.【Method】Ten new lines of cassava were introduced as experimental materials, and two main cassava varieties of Yunnan Province were used as controls to comprehensively evaluate the main biological characteristics, yield traits, quality and resistance. The variety comparative test was carried out in Longyang District, Menghai County, Yuanmou County, Maguan County of Yunnan Province.【Result】The main stem diameters of 56-7, 58-7 and F124 were higher than those of the control varieties, and those of the other seven new cassava lines were lower than the control varieties. There was no significant difference in plant height among ten new cassava lines. The plant heights of 43-3 and F200 were lower than those of the control varieties, and those of the other lines were higher than the control varieties. The main stem height of 58-7, 43-3, 44-7, 30-8 and F124 was higher than that of the control variety SC205, which showed high branching. The branches of main stems of 56-7 and 02-4 were mostly two branches, and those of the other lines were mostly three branches. The yield per plant of 56-7, 58-7, F200, F124, 02-4 was higher than that of the control varieties, and the yield increase per plant of 56-7 and 58-7 reached a very significant level. The dry matter rate of 58-7, 43-3, 14-19, 30-8, F200 and F124 was higher than that of the control variety GR4. The ten new cassava lines had fewer occurrences of diseases and insect pests in different ecological regions of Yunnan, showing a certain resistance.【Conclusion】Among the ten new cassava lines, the 58-7, F124, F200 and 43-3 showed superior comprehensive performance with good yield increasing effects and excellent quality. Such lines have good prospects for promotion and application in production and production experiments can be conducted in different ecological regions of Yunnan in an appropriate time.]]></description>
<pubDate>2020/6/16 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[SONG Jiming1, ZHANG Linhui1, DUAN Chunfang1, JIANG Tailing1, 
LIU Qian1, XIONG Xiankun1, CHANG Ruishan2, LIU Guanghua1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>SONG Jiming1, ZHANG Linhui1, DUAN Chunfang1, JIANG Tailing1, 
LIU Qian1, XIONG Xiankun1, CHANG Ruishan2, LIU Guanghua1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202004002&flag=1]]></guid><cfi:id>93</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effects of Seed Soaking with Uniconazole on Tillering and Agronomic Traits of Sugarcane]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202004003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】In this study, uniconazole was used to soak the sugarcane seeds. The optimum concentration of uniconazole that can promote the early occurrence of sugarcane tillering and high tillering rate was proposed to increase the effective stem number and yield per unit area of sugarcane.【Method】The conventional sugarcane seed of Guitang 42 was used in this experiment and four treatment concentrations were set, including 0 mg/L, 20 mg/L, 40 mg/L, and 60 mg/L, to soak the seeds for 2 h.【Result】The results showed that the SPAD values of newly planted sugarcane treated with 20 mg/L,40 mg/L, and 60 mg/L uniconazole increased by 20.5%, 21.1%, and 27.2%, respectively, compared with that of 0 mg/L, showing extremely significant differences; and the tillering rate of 20 mg/L, 40 mg/L and 60 mg/L treatments increased by 48.96%, 119.74% and 169.90%, respectively, compared with that of 0 mg/L treatment, with extremely significant differences. Among the 4 treatments, the effective stem number and yield of 20 mg/L uniconazole treatment were the highest; among them, the effective stem and yield of newly planted sugarcane were 59 640 pieces/hm2 and 102.22 t/hm2, respectively, which were 8.32% and 8.48% higher than those of CK. The effective stem and yield of ratoon sugarcane were 72 894 pieces/hm2 and 105.56 t/hm2, which were 12.45% and 16.05% higher than those of CK, respectively. The sucrose contents of newly planted and ratoon sugarcanes did not change with the increase of uniconazole concentration. 【Conclusion】Soaking seeds with 20 mg/L uniconazole can effectively increase the SPAD value of +1 leaf in seedling stage of the newly planted sugarcane, the tillering rate, effective stem number and yield per unit area, and the stooling capacity and yield of ratoon sugarcane, indicateing that the concentration of uniconazole should not be too high.]]></description>
<pubDate>2020/6/16 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[FAN Yegeng, CHEN Rongfa, ZHOU Huiwen, YAN Haifeng, WENG Mengling, 
QIU Lihang, HUANG Xing, ZHOU Zhongfeng, WU Jianming]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>FAN Yegeng, CHEN Rongfa, ZHOU Huiwen, YAN Haifeng, WENG Mengling, 
QIU Lihang, HUANG Xing, ZHOU Zhongfeng, WU Jianming</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202004003&flag=1]]></guid><cfi:id>92</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Study on the Effect of Fertigation Technology on Prolonging the Life of Sugarcane Ratoon]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202004004&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The effect of fertigation technology prolonging the life of sugarcane ratoon were studied in order to provide technical references for solving the problems of short ratoon life and low sugarcane yield.【Method】Through the application of fertigation technology, the optimal ratio of fertilizer was selected in new planted sugarcane and applied to the field management of sugarcane ratoon to study the ratoon life and related benefits.【Result】According to the field experiment, when the fertigation technology was applied to the sugarcane, the optimal ratio of fertilizer was urea of 450 kg/hm2, calcium magnesium phosphate fertilizer of 1 500 kg/hm2, potassium sulfate of 180 kg/hm2, compound fertilizer of 270 kg/hm2, organic fertilizer of 1 350 kg/hm2, and the application amount of chemical fertilizer was 20% less than that of conventional fertilization; the emergence rate, plant height, effective stalk number, cane weight and cane yield of ratoon sugarcane were significantly higher than those of the conventional fertilization. The ratoon life was up to four years, with additional income of 43 437 yuan/hm2.【Conclusion】The application of 
fertigation technology in field management of sugarcane can prolong the ratoon life by two years, reduce the application amount of chemical fertilizer and increase the economic income, and should be widely promoted and applied to improve the quality of field management and yield of ratoon sugarcane, and to prolong the life of ratoon sugarcane.]]></description>
<pubDate>2020/6/16 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[JING Fulin, GUAN Jinglun, HUANG Suo, SU Haiyang, LU Shaode, JIE Yuqi, SU Ziwen]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>JING Fulin, GUAN Jinglun, HUANG Suo, SU Haiyang, LU Shaode, JIE Yuqi, SU Ziwen</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202004004&flag=1]]></guid><cfi:id>91</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Genetic Analysis of Quality Traits in Xikehui Rice]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202003001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was to investigate the genetic characteristics of quality traits in Xikehui rice. 
【Method】Taking Xikehui 2928, Xikehui 4761, Shuhui 498, Yahui 2115 as male parents, and Gang 46A, Nei 5A, Yixiang 
2115 as female parents, 20（4 × 5）hybrid combinations were generated by incomplete diallel cross method, and amylose 
content, protein content and RVA profile properties of these hybrid combinations were determined. 【Result】（1）The 
variation coefficients of amylose content, setback value, breakdown value and consistence value of the tested combinations 
were relatively big, which were 61.26%, 51.28%, 36.53% and 21.07% respectively, indicating a great improvement potential 
for these traits.（2）The parents of Xikehui 2928, Xikehui 4761, Yixiang 1A and Nei 5A had preferable general combining 
ability and could be selected to produce hybrid rice combinations with good quality traits. For example, the amylose 
content of the hybrid combination “Nei 5A×Xikehui 2928” was 21.63%, and the protein content was 11.15%.（3）
The extremely significant differences in inter-cross variance and variance of special combining ability indicated that the 
quality traits were not only affected by the genetic additive effects of the parents, but also restricted by environmental factors.
（4）The analysis on variance contribution rate of each trait genotype showed that, the amylose content, protein content, 
gelatinization temperature, hot paste viscosity, cold paste viscosity and consistence value were significantly affected by the additive effect of parental genes, while the peak viscosity, breakdown value and setback value were significantly affected by the 
environmental factors.【Conclusion】When selecting and breeding hybrid rice combinations with good quality, we should not 
only select excellent parents for mating, but also take into account the influence of local environment.]]></description>
<pubDate>2020/6/1 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[肖　瑶，张　杰，王学春，杨国涛，胡运高]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>肖　瑶，张　杰，王学春，杨国涛，胡运高</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202003001&flag=1]]></guid><cfi:id>90</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Breeding of the New Fresh-eating Sweet Potato Variety “Guangshu 72”Rich in Carotene]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202003002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The experiment is to breed a new variety of fresh-eating sweet potato with high quality and 
disease resistance.【Method】As the female parent, Guangshu 87, a variety with cross-incompatibility group of 88-70, 
broad adaptation, disease resistance and high yield, and as the male parent, Guangshu 79, a variety with cross incompatibility 
group of D, good edible quality and high carotene, were selected for directional hybridization, then seeding and selecting 
the lines, which were subjected to a reselection test, a comparison test, and a regional test in Guangdong to evaluate the 
adaptability and the disease resistance identification.【Result】The new sweet potato variety“Guangshu 72”was bred. In 
provincial multi-location adaptability test, there was an average yield of fresh root and dry root of 2 350.0 kg and 672.9 kg 
per 667 m2, which was 21.6% and 24.4% higher than that of the control variety Guangshu 111, respectively, both reaching 
an extremely significant level. The dry matter rate and starch content of the root were 28.7% and 19.7%, respectively. The 
carotene content of fresh root was 81 mg/kg. The steamed root was powdery and sweet, with good taste and a taste value of 
80-85 scores. The resistance to bacterial wilt of field test was identified as medium resistance, and that of indoor test was identified as resistance.【Conclusion】The special fresh-eating sweet potato variety Guangshu 72 is characterized with high 
quality, high yield, wide adaptability, outstanding commodity value and good palatability, which is conducive to promoting the 
production of sweet potato and improving the social and economic benefits of sweet potato cultivation. In 2016, it passed the 
variety approval of Guangdong Province.]]></description>
<pubDate>2020/6/1 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[张雄坚，陈景益，黄立飞，王章英，罗忠霞，姚祝芳，房伯平]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>张雄坚，陈景益，黄立飞，王章英，罗忠霞，姚祝芳，房伯平</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202003002&flag=1]]></guid><cfi:id>89</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Research Progress in Genetic Transformation and Regeneration System of Soybean]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202003003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[As one of modern biotechnologies, transgenic technology has made important progress in gene function 
research and transgenic breeding. Soybean functional genomics has developed rapidly since the completion of soybean 
genome sequencing, and it has attracted wide attentions to excavate genes controlling important characters for transgenic 
breeding. With the implementation of the major project of new varieties cultivation of genetically modified soybean, China 
has established the research technology system and supervision system of transgenic breeding including gene cloning, 
genetic transformation, functional research, safety evaluation of transgenic lines and etc. Among them, the research on 
technology system of genetic transformation for transgenic soybean has made rapid progress, which was mainly focused on 
the establishment and optimization of stable and efficient regeneration system of genetic transformation, exploration and 
optimization of soybean genetic transformation methods and etc. The purpose of this paper is to elaborate the following 
aspects including genetic transformation system, transgenic methods and transformation efficiency of soybean and to provide 
reference for the researches on gene functions and the cultivation of genetically modified soybean.]]></description>
<pubDate>2020/6/1 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[王立平 1
，何展泳 2，年　海 2，王宏杰 2，马启彬 2]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>王立平 1
，何展泳 2，年　海 2，王宏杰 2，马启彬 2</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202003003&flag=1]]></guid><cfi:id>88</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Preliminary Report on Characters of Local Amomum villosum Lour. Variety“Reke 2”]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202003004&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】Amomum villosum Lour. is a superior product of Chinese medicine “fructus amomi”, with 
a long application history on clinical. The study was to provide references for the variety identification and production as well 
as planting through systematical analysis on the characters of local A. villosum variety Reke 2. It is recorded that Yangchun 
area of Guangdong is genuine producing area of A. villosum. The quality and pharmaceutical effect are affected by the mixed 
provenance, so it is urgent to strengthen the researches of selecting and improving of high quality resources.【Method】
The plant, flower, fruit and other characters of Reke2 were investigated and compared.【Result】The results showed that 
the plant of Reke 2 was tall and strong, with the plant height of 2.84 m and stem diameter of 13.12 mm. The leaves were 
large and thick, with the leaf length of 43.52 cm and leaf width of 6.46 cm. The leaf margin had no obvious fluctuation, 
with protruding line paralleling to the principal vein. The ligule was long elliptic and brown, with a length of 0.95 cm. The 
inflorescences showed a “curved type”, with the pedicel length of 9.70 cm, floret number of 9.3 pieces and labellum of 2.24 cm long and 2.39 cm wide. The midrid was yellow and purplish red, with the yellow tip being epitaxial and the purplish red 
base being eight-shaped scabbed spots. The fruit was oblate and brown, with 23.2 seeds, 1 000-kernel weight of 14.14 g and 
volatile oil content of 3.6%. The flowering period and fruit maturation period of Reke2 were later than those of other varieties.
【Conclusion】The characters of Reke2 were identified through investigation and analysis. As one of the standard varieties 
of the DUS testing guidelines, it will lay a foundation for the accurate identification of such variety and selection as well as the 
protection and selection of superior A. villosum resources.]]></description>
<pubDate>2020/6/1 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[贺军军，姚艳丽，李文秀，张华林，罗　萍]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>贺军军，姚艳丽，李文秀，张华林，罗　萍</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202003004&flag=1]]></guid><cfi:id>87</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effect of Low Temperature on Rice Qualityat Jointing and Heading Stages]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202002001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The effects of low temperature and chilling injury on rice quality were discussed in order to 
provide theoretical basis for the efficient cultivation and quality certification of rice in Liaoning area under the background of 
climate change.【Method】Taking Rice 90-35 as the tested variety and the normal cultivation and management as control, 
different low temperature treatments (5℃ and 3℃ lower than the temperature outside, all lasting for 5 days) were simulated 
through TRP-1000D artificial intelligence climate box with a total of five treatments - CK, A1, A2, B1 and B2 to investigate 
the effects of different low temperature stress treatments on the rice nutritional quality, milling quality and appearance quality 
at the jointing and heading stages.【Result】Under low temperature stress, the protein content and the amylose content of 
Rice 90-35 increased significantly compared with those of CK, the protein contents of A1, A2, B1 and B2 were 3.45%, 1.15%,6.90% and 8.05% higher than those of CK, respectively. Except for B1, the amylose contents of A1, A2 and B2 increased by 
1.75%, 0.44% and 0.44% respectively compared with those of CK. The fatty acid content and milled rice rate decreased 
compared with CK, the fatty acid contents in A1, A2, B1 and B2 were 17.75%, 7.5%, 25% and 11% lower than those in CK, 
and the milled rice rate was 2.1%, 6.95%, 0.22% and 7.5% lower than that of CK respectively. Brown rice rate and chalky 
rice rate reduced significantly at jointing stage with low temperature stress, compared with CK, the brown rice rates of A1 
and A2 decreased by 0.73% and 1.09%, respectively, and the chalky rice rates reduced by 33.3% and 22.2%, respectively. 
There was a significant difference at heading stage with low temperature stress, compared with CK, the brown rice rates of B1 
and B2 increased by 0.6% and 3.02%, respectively, and the chalky rice rates increased by 255.6% and 133.3%, respectively. 
The nutritional quality and milled rice percentage in milling quality were negatively affected by low temperature stress, while 
appropriate low temperature stress treatment at jointing stage was beneficial to the brown rice rate and appearance quality of 
grinding quality.【Conclusion】The nutritional quality, grinding quality and appearance quality of rice 90-35 are affected to 
varying degrees by different low temperature stress treatments at different growth stages.]]></description>
<pubDate>2020/4/26 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[吕　晓 1
，张兵兵 1
，杨　璐 1
，战莘晔 2，吴　航 1
，高　全 1
，张　慧 1
，高莉莉 1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>吕　晓 1
，张兵兵 1
，杨　璐 1
，战莘晔 2，吴　航 1
，高　全 1
，张　慧 1
，高莉莉 1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202002001&flag=1]]></guid><cfi:id>86</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Correlation Analysis Between Fiber Quality Traits andGrowth Periods of Early-maturing Upland Cotton]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202002002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The purpose of this project was to provide theoretical basis and guidance information for the 
selection of high-quality early-maturing upland cotton varieties.【Method】The software of Excel 2003 and SPSS19.0 were 
used to conduct data statistics on the fiber quality traits and different growth stages of upland cotton varieties participating 
in the regional test (early-maturing group) of Xinjiang Autonomous Region in 2015-2017, Statistical analysis methods 
such as correlation analysis, path analysis and stepwise regression analysis were used to study on the relationship between 
fiber quality traits and growth period, identify the important influencing factors and establish the optimal regression model.
【Results】Through the path analysis, it was concluded that there were strong indirect effects on uniformity of cotton fiber, 
and direct effects on fiber length, fiber strength and micronaire value in the seedling-flowering stage. It had indirect effectson fiber length and elongation at flowering-toll opening stage. The results of stepwise regression analysis showed that the number 
of days between seedling emergence and flowering had extremely significant positive effects on fiber length and elongation, 
significant positive effects on fiber strength and significant negative effects on micronaire value, while a stepwise regression 
model could be established, and the t test was significant.【Conclusion】The number of days from seedling emergence to 
flowering had significant direct and indirect effects on fiber quality traits such as fiber length, fiber strength, micronaire value 
and elongation. The number of days from flowering to boll opening had significant indirect effects on fiber length and elongation.]]></description>
<pubDate>2020/4/26 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[马晓梅 1
，李保成 1
，王　新 1
，赵素琴 2，董承光 1
，周小凤 1
，刘永昌 3]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>马晓梅 1
，李保成 1
，王　新 1
，赵素琴 2，董承光 1
，周小凤 1
，刘永昌 3</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202002002&flag=1]]></guid><cfi:id>85</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effects of Doubling the CO2 Concentration onPhotosynthetic Characteristics and Growthof Dendrobium officinale]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202002003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was to evaluate the effects of doubling the CO2 concentration on photosynthetic 
characteristics and growth of Dendrobium offi cinale.【Method】With the autumn buds of D. offi cinale as test materials, the 
effects of treatments with CO2 concentration of 400 μmol/mol (atmospheric concentration, control) and 800 μmol/mol (treatment 
concentration) for 180 days on the photosynthetic characteristics, growth and effective components of D. officinale were 
compared. 【Result】After doubling the CO2 concentration, the net photosynthetic rate, stomatal conductance, transpiration 
rate and water use efficiency of D. offi cinale were increased significantly compared with those of the control, however, there 
was no photosynthetic acclimation on D. offi cinale during the experiments. The stem dry weight, stem fresh weight, stem 
height, numbers of leaves and leaf thickness were also significantly increased in double treatment, with the increases of 30%, 
13%, 49.3%, 42% and 3.5%, respectively, while the single leaf area and the specific leaf area were decreased by 11.8% and20%, respectively. The soluble protein content in leaf was increased by 19%. The contents of polysaccharides, alkaloids, total 
amino acids and total flavonoids in stem were slightly improved, but there was no significant difference compared with those of 
the control.【Conclusion】The growth of D. offi cinalis could be promoted by doubling the CO2 concentration, and the yield of 
its main medicinal part (stem) was increased.]]></description>
<pubDate>2020/4/26 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[何　梅 1，2，章金辉 1
，王再花 1
，李　杰 1
，叶广英 1
，叶庆生 2]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>何　梅 1，2，章金辉 1
，王再花 1
，李　杰 1
，叶广英 1
，叶庆生 2</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202002003&flag=1]]></guid><cfi:id>84</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Analysis on Combining Ability and Heritability inAgronomic Traits of Key Parents of Hybrid rice]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202001001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The combining ability and heritability of four premium backbone sterility lines and five main 
restorer lines in agronomic characters of hybrid rice were analyzed.【Method】Four backbone sterile lines and five backbone 
restorer lines in common production were selected for incomplete diallel cross, and the yield and grain shape traits of the 
offspring were analyzed statistically to dissect the combining ability and heritability.【Result】The results indicate that the 
narrow-sense heritability of yield of hybrid rice was less than 50% and there was great difference between it and the broadsense heritability. The yield was greatly affected by non-additive effect and easily affected by environmental factors. The 
spikelets panicle and effective panicle had significant effects on yield. The GCA effect value of yield of Yixiang 1A was 8.02, 
and the GCA effect value of spikelet panicle was 1.47. The yield GCA effect value of Xikehui 4761 was 8.37 and the GCA 
effect value of effective panicle was 8.74. The grain shape was greatly affected by additive effect, and the effect of restorer 
lines was greater than that of sterile lines. The variance contribution rates of parents of restorer lines with length-width and 
grain length were 89.68% and 63.75%, and the variance contribution rate of parents of sterile lines and restorer lines to grainwidth both were 40.68%. Combinations with larger grain length and length-width ratio had longer grain shapes.【Conclusion】
The parents with high general heritability in grain length and length-width ratio, especially for restorers, should be selected for 
long grain shape hybrid combinations. The parents with high heritability in number of grain spikelets and effective spike number 
should be selected to increase yield. “Yahui 2115”, a Class I parent on rice grain shape was obtained in the study, which 
could be used to match a combination of large and full grain shape. A large and plump combination of Yixiang 1A/Yahui 2115 
and a high-yield hybrid combination Yixiang 1A/ Shuhui 498 were verified.]]></description>
<pubDate>2020/4/1 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[刘 倩，张国豪，车万均，肖 瑶，张 杰，胡运高]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>刘 倩，张国豪，车万均，肖 瑶，张 杰，胡运高</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202001001&flag=1]]></guid><cfi:id>83</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Comparative Trial of 10 Vegetable Sweet Potato Varieties in Hainan in Summer and Autumn]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202001002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was to select high-quality vegetable sweet potato varieties that suitable for 
production in Hainan in hot summer and autumn.【Method】10 vegetable sweet potato varieties were selected for trial 
and evaluation for 2 years. Through the investigation of agronomic traits and disease resistance on the tested varieties, the 
determination of leaf color value and dry matter rate, and the evaluation of nutritional quality and taste were carried out. 
【Result】In terms of total yield, Haida 7798 and Qiancaishu 2 were significantly higher than that of the control Fushu 
7-6; in terms of nutritional quality, EC15 had the lowest nitrate content, Qiancaishu 2 had the highest soluble sugar content 
and vitamin C content with 99.42 mg/g and 13.92 mg/g, respectively, while Shulv 2 had the highest soluble protein content; 
in terms of disease resistance, Guangcaishu 7, Guishucai 14-7, Haida 7798 and Qiancaishu 2 were the best varieties; in 
the evaluation of the taste, Guangcaishu 7 and Guishucai 14-7 had higher comprehensive scores. 【Conclusion】From the 
results mentioned above, it can be concluded that, Haida 7798, Qiancaishu 2, Guangcaishu 7 and Guishucai 14-7 have 
higher yields, good taste and flavor, and rich nutritional quality, which are suitable for planting and production in Hainan in 
summer and autumn.]]></description>
<pubDate>2020/4/1 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[黄 婷，梁清干，陈艳丽，李思明，朱国鹏]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>黄 婷，梁清干，陈艳丽，李思明，朱国鹏</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202001002&flag=1]]></guid><cfi:id>82</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Comparative Trial of New Soybean StrainsSowed in Summer in Huang-Huai Area]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202001003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study tried to select new soybean strains suitable for production and breeding in Suzhou 
areas, Anhui Province. 【Methhod】 The agronomic characters, quality, resistance and yield of 18 new soybean strains were 
compared, with Zhonghuang 13 as control.【Result】The results showed that Fuyun 10174 had the highest yield, followed 
by Xu 9601-2B, Shengdou 4, Fu 1610, Zheng 1307, Zheng 1427, Luo 4903, Zhonghuang 309, Shengdou 3, Zhonghuang 
316, Han 12-38, the yield of which increased by 52.67%, 50.10%, 45.43%, 44.83%, 38.06%, 29.88%, 20.73%, 20.17%, 
17.55%, 9.98% and 9.98%, respectively compared with that of the control cultivar Zhonghuang 13, and the differences 
reached significant levels. In terms of the quality results, Han 12-383, Zheng 1307, Shengdou 3 and Xu 9601-2B had 
better performance and the total protein and fat contents of them were 63.38%, 63.61%, 63.61% and 63.31%, all of which 
belonging to the double high strains. Han 12-204, Zhonghuang 316, Zheng 1307, Fuyun 10174 and Xu 9601-2B had better 
resistance to the prevailing strains SC3 and SC7 of soybean mosaic virus （SMV） and all of them were resistant varieties. 
【Conclusion】Combined with the results of yield, quality and resistance, the following strains, Zhonghuang 316, Zheng 
1307, Fuyun 10174 , Xu 9601-2B and Shengdou 3 are suitable for planting in Suzhou. These strains can be used as excellent 
germplasm resources in this region.]]></description>
<pubDate>2020/4/1 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[王路路，姜 磊，沈维良]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>王路路，姜 磊，沈维良</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202001003&flag=1]]></guid><cfi:id>81</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Characteristics of Main Chemical Components in Flue-curedTobacco Leaves from New Tobacco Growing Areas of Yunnan and Relationships with Smoking Quality]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202001004&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】In order to understand the quality characteristics of tobacco leaves from new tobacco growing 
areas in Yunnan and improve the industrial usability of tobacco leaves, the characteristics of main chemical components 
in flue-cured tobacco leaves were analyzed.【Method】288 samples of the upper, middle and lower tobacco leaves (B2F, 
C3F, X2F) during 2011-2018 were collected from Guangnan, Jingdong and Shuangjiang. The main chemical components in 
tobacco leaves were determined and their relationships with cigarette smoking quality were studied.【Result】The chlorine 
contents in all the upper, middle and lower tobacco leaves during 2011-2018 collected from Guangnan, Jingdong and 
Shuangjiang were relatively low in general. The reducing sugar contents in 41.92% of the middle leaves were higher than 
26%, and the nicotine contents in 33.33% of the upper leaves were higher than 3.5%. Higher nicotine contents in the upper 
leaves and higher reducing sugar contents in the middle leaves were the main factors influencing the chemical componentcoordination of tobacco leaves from the 3 tobacco planting counties of new tobacco growing areas. The contents of potassium and 
chlorine in tobacco leaves during 2011-2018 were relatively stable in the 3 tobacco planting counties. However, the contents 
total sugar of reducing sugar in middle and upper leaves showed an increasing trend since 2013, and the biggest increase was 
up to 16.02%. The contents of nicotine and total nitrogen showed a downward trend since 2013, and the biggest decrease was 
22.07%. The grey correlation analysis indicated that the contents of total nitrogen and reducing sugar were the main chemical 
component indicators influencing the total scores of smoking quality.【Conclusion】There were significant differences in the 
characteristics of main chemical components in tobacco leaves from 3 tobacco planting areas of Yunnan. It is recommended that 
total nitrogen contents of tobacco leaves in Shuangjiang should be appropriately raised and reducing sugar contents be reduced, 
while the coordination of chemical components of tobacco leaves in Guangnan can be improved by controlling the contents 
nitrogen and nicotine .]]></description>
<pubDate>2020/4/1 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[杨　欣，胡男君，关罗浩，冀　浩，王初亮，谢　晋，李　超]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>杨　欣，胡男君，关罗浩，冀　浩，王初亮，谢　晋，李　超</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202001004&flag=1]]></guid><cfi:id>80</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Experimental Study of New Spring Wheat Variety JZ5 Introduced to Zambia]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202010001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】Jilin Agricultural University undertook the China-Aid Zambia Agricultural Technology Demonstration Center Project for implementing the tasks of “personnel training, scientific research, demonstration and promotion, publicity and display”.With respect to the will of recipient countries and upholding of the principle of “proposed by recipient country, agreed by recipient country, and led by recipient country”, the University carried out wheat introduction work according to the Zambian local demand of wheat cultivation.【Method】JZ5, a fine spring wheat variety in China, was bred by using C7906 as the female parent and NS2 as the male parent through genealogical method. It was introduced to Zambia in 2011.【Result】After years of introduction experiment, regional test and production test, JZ5 showed an average spike grain number of 65 grains, dry mass of 1 000 grains of 54.2 g, and yield potential of 11 000 kg/hm2 in all the tested wheat. During the wheat planting period, Zambia was in the dry season, during which dry-hot wind had a great influence on wheat grouting, while JZ5, with fast grouting rate and high seed setting rate, was barely affected by dryhot wind. It had strong resistance to dry-hot wind, aphids and powdery mildew, and had obvious characteristics of high and stable yield. It was approved by the Seed Control and Certification Institute （SCCI） of the Ministry of Agriculture of Zambia on March 7, 2016.【Conclusion】It is suitable for planting in three ecological zones in Zambia, allowing commercial promotion in Zambia, and enriching the germplasm resources in Zambia.]]></description>
<pubDate>2020/12/28 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[WANG Xiaobo1, BAO Heping1,2]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>WANG Xiaobo1, BAO Heping1,2</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202010001&flag=1]]></guid><cfi:id>79</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Identification and Evaluation of Main Agronomic Traits of Buckwheat Germplasm Resources in Guangxi]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202010002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】In order to excavate and utilize excellent buckwheat resources and promote the development of the buckwheat industry in Guangxi, the local germplasm resources of buckwheat collected in Guangxi were evaluated.【Method】With 58 local germplasm resources collected by census as the experimental materials, 9 major agronomic traits including growth period, plant height, main stem thickness, branch number of main stem, node number of main stem, thousand grain weight, seed number per plant, grain weight per plant and yield were identified and evaluated.【Result】The average values of growth period, plant height, main stem thickness, branch number of main stem, node number of main stem, thousand grain-weight, seed number per plant, grain weight per plant and yield were 80.57 d, 70.29 cm, 3.75 mm, 2.63, 8.68, 22.97 g, 97.02, 2.22 g and 918.7 kg/hm2, respectively And the variation degree of the traits were great, among which the coefficient of variation of grain weight per plant was maximum（27.93%）, and that of growth period was minimum（5.42%）. The correlation analysis showed that the branch number of main stem was extremely significantly correlated with the stem thickness, grain weight per plant, seed number per plant and yield, the yield was extremely significantly correlated with the node number of main stem, grain weight per plant and seed number per plant, while the correlation between 
yield and growth period, plant height, stem thickness and thousand-grain weight was not significant.【Conclusion】The node number of main stem, branch number of main stem, grain weight per plant, seed number per plant are the main agronomic traits affecting buckwheat yield. The morphologies of high-yield buckwheat varieties are characterized by moderate plant height, main stem with more node and branch numbers, more seed numbers per plant and moderate grain weight. Six excellent resources were selected, such as Batou buckwheat, Jianli spring buckwheat, Huangping buckwheat, Shuowan buckwheat, Guzhai triangle wheat and Wazhadi buckwheat.]]></description>
<pubDate>2020/12/28 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[QIN Chuxian1，QIN Xinguang1，XING Yihao1，WEN Dongqiang1，WANG Feiyong2]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>QIN Chuxian1，QIN Xinguang1，XING Yihao1，WEN Dongqiang1，WANG Feiyong2</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202010002&flag=1]]></guid><cfi:id>78</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Creation of Rice Core Germplasm Breeding Systems and Practices in Good-quality Rice Breeding]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202108001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Rice core germplasm breeding systems of theory and breeding materials were created by research team of 
Guangdong Academy of Agricultural Sciences in order to realize no-slot joint of rice breeding and rice germplasm resources, 
effective integration of conventional breeding techniques and advanced and applicable technology. Ri ce core germ plas m 
breeding theoretical systems including the co nception of rice core germplasm s, corresponding hypothesis between ideal 
gene system and breakthrough rice variety, creation of ideal model, comprehensive arrangement of foreground selection 
and background selection, biological significances of DNA block, phenotypes of rice cor e germ plasms and cloud data of 
genotypes, research on rice synthesis breeding by advanced and applicable technologies, heterosis utilization of rice core 
germplasms were briefed. The creation of Huanghuazhan, Meixiangzhan and Huazhan core germplasm breeding material 
systems were traced back, and both the breakthrough varieties of Huangh uazhan with the largest indica rice promotion area 
in China, and Meixiangzhan No. 2 with the most excellent eating qua lity in China, the br eakthrough restorer line of Huazhan 
with the most excellent combining abilit y in rice breeding history, which deri ved from the core germplasm breeding material systems were introduced. The present situation and direction of rice genetics and breeding were discussed.]]></description>
<pubDate>2021/9/24 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[周少川，柯　苇，缪若维，李　宏，黄道强，王重荣]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>周少川，柯　苇，缪若维，李　宏，黄道强，王重荣</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202108001&flag=1]]></guid><cfi:id>77</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Research Progress of Rice Green-Revertible Albino Mutants]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202108002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Rice is one of the most important food crops. With the increase of population, the reduction of cultivated 
land and the continuous deterioration of environmental conditions, the further increase of yield is still an important goal of 
breeders. Increasing biomass by improving photosynthetic efficiency is an important measure to further increase rice yield. 
Chloroplast is the main place of photosynthesis and the energy supply center of cells, which is essential for plant growth 
and cell metabolism. The identification and cloning of key genes involved in the development and regulation of chloroplasts 
and the revelation of their regulatory networks and molecular mechanisms have important scientific significance and 
practical value for regulating photosynthesis and plant growth and developing new varieties of rice with high photosynthetic 
efficiency. Leaf colors are diverse and easy to be distinguished. Therefore, leaf color mutants are often used as important 
materials to explore the mechanism of photosynthesis, chlorophyll biosynthesis, chloroplast structure and function, and 
genetic development regulation. Rice leaf color mutants are more common and green-revertible albino mutants are easy to 
be distinguished. Green-revertible albino mutants have great application value in the research of chloroplast development, chlorophyll synthesis, photosynthesis efficiency, genetic breeding and other fields. The phenotype, classification, source, 
mechanism of action, mode of inheritance and influencing factors of the green-revertible albino mutants were reviewed in order 
to provide references for the theoretical research and practical application.]]></description>
<pubDate>2021/9/24 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[唐辉武，张 兰，蔡培荣，黄潇溢，秦银娇，吴梓鹏，朱嘉慧，王丽敏]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>唐辉武，张 兰，蔡培荣，黄潇溢，秦银娇，吴梓鹏，朱嘉慧，王丽敏</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202108002&flag=1]]></guid><cfi:id>76</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Research Progress of Dwarfing Genes in Plants]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202108003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The regulation of plant dwarfing is a hot research in genetic breeding. Domestic and foreign scholars have 
carried out in-depth researches on plant dwarfing mechanism, dwarfing genes, dwarfing genetic breeding and so on. A 
relatively perfect dwarfing research system has been formed in regard to rice, corn, wheat and other food crops and cucumber, 
tomato, pumpkin and other horticultural crops. Dwarf plants have compact plant type and small crown width, which can effectively improve lodging resistance, with the advantages of convenient management in production practice. Therefore, dwarf 
breeding is a development trend of plant breeding. Hormone regulation is a widely used means of dwarfing regulation. Plant 
hormones change the length and number of internodes by affecting cell division and elongation so as to regulate internode height 
and achieve the effect of dwarfing plants. Common hormones include gibberellin, brassinolide, auxin ans ethylene, etc. These 
hormones promote or inhibit the growth and development of plants, which are related to the formation of dwarf mutants, and there 
are interactions between various hormone signaling pathways. The research status of plant dwarf genes in Gramineae, Solanaceae 
and Cucurbitaceae, the formation of dwarf mutants under hormone regulation, and the cloning and function of dwarfing genes are 
reviewed. The molecular mechanism and molecular genetics of plant dwarf traits are discussed, which provide a theoretical basis 
for the subsequent study of plant dwarf genes.]]></description>
<pubDate>2021/9/24 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[宋秋平，俞佳虹，刘　佳，尹玉和，张　强，王凤梧，刘乐承，万红建]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>宋秋平，俞佳虹，刘　佳，尹玉和，张　强，王凤梧，刘乐承，万红建</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202108003&flag=1]]></guid><cfi:id>75</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Analysis on Pedigree and Parent Use of Sweetpotato Cultivars Bred in Guangdong Province from 1978 to 2016]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202108004&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】In order to understand the genetic background and genetic relationship of sweetpotato 
cultivars and provide references for parents selection and effective cross combination in sweetpotato breeding, 
the sweetpotato cultivars bred in Guangdong Province from 1978 to 2016 were investigated and summarized.
【Method】Based on the information of 57 sweetpotato cultivars, which passed the national identification or provincial 
approval, bred in Guangdong Province from 1978 to 2016, their profiles, parental source, pedigree and derived cultivars 
were analyzed.【Result】Mainly bred by purposeful hybridization between varieties（59.6%）or polycrossing（29.8%）, Guangdong sweetpotato cultivars mainly include fresh food and fresh food and forage dual-purpose types, accounting for 
86.0%. 57 cultivars could be ultimately traced to 61 direct parents and 42 original parents. Yubeibai, Zhanshu 75-57, Pushu 
3 and Xinzhutou were the most frequently used original parents, and over 14 cultivars were derived from them. The pedigree 
of sweetpotato cultivars bred in Guangdong Province was mainly composed of landraces or early local bred cultivars and their 
derivatives, which could be clearly divided into four families: Zhanshu 75-57 family, Guangjie family, Guangpu family and other 
family. These released sweetpotato cultivars have been used as direct parents, and 50 new sweetpotato cultivars have been bred, 
some of which have been widely used in Guangdong Province, even the whole country.【Conclusion】The sweetpotato cultivars 
bred in Guangdong Province and their parents showed obvious “Guangdong features”. In order to broaden the genetic basis of 
sweetpotato cultivars, it is necessary to continue to widely introduce and collect excellent sweetpotato germplasm to Guangdong 
Province, and accurately identify and evaluate the germplasm resources especially local germplasm resources for the breeding of 
superior parents.]]></description>
<pubDate>2021/9/24 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[王章英，唐朝臣，江炳志，张湘博，房伯平]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>王章英，唐朝臣，江炳志，张湘博，房伯平</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202108004&flag=1]]></guid><cfi:id>74</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[miR156-mediated SPLs Controls the Regulation of Arabidopsis Seed Maturation]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202108005&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【 Objective】MicroRNA156s（miR156s）is a kind of very conservative small RNA family. The study 
on its participation in the regulatory network of gene expression during seed maturation in plants will play a key role 
in the improvement of seed qualities and yields.【Methods】Based on the reporter gene screening system established 
by predecessors, the GUS activities of mutants MIM156-gus and SPLs-ox were analyzed. The tissue expression 
characteristics of different members in miR156 family and expression of key regulatory factors during mutant seed 
maturation process were identified by qRT-PCR technology.【Results】After GUS staining, the four mutants showed 
GUS phenotype in 14-day-old seedlings, which were MIM156 and its target genes SPL2, SPL10 and SPL11 with gus23
as background material. In the miR156 family, the expression level of miR156a, d, e and j in silique was at least 20 times 
that of in 14-day-old seedlings. The expression levels of LEC1, ABI3 and FUS3 in the MIM156 down-regulated mutants 
were significantly increased to different degrees.【Conclusion】The down-regulation of miR156 and the over-expression 
of SPLs induced the ectopic expression of SSPs genes. Moreover, MIM156 promoted the expression of LEC1, ABI3 and FUS3 genes. These indicated that miR156/SPLs, as a regulatory factor, was involved in the process of plant seed maturation.]]></description>
<pubDate>2021/9/24 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[张小乙，韩　雪，李红雪，王晶莹，王守文，翟璐璐]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>张小乙，韩　雪，李红雪，王晶莹，王守文，翟璐璐</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202108005&flag=1]]></guid><cfi:id>73</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Study on TTC Staining and Germination Characteristics of Rice Seeds]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202107001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】It has important guiding significance for perfecting rice seed quality inspection to carry 
out TTC staining experiment, select the best combination and explore the changes in the main physiological indexes of 
rice seeds.【Method】Single factor analysis and orthogonal experimental design were used to compare the influence of 
seed imbibition time, TTC concentration, staining temperature and staining time, on the staining effect, and to screen 
the best TCC staining combination. Spectrophotometry was used to determine the amylase activity and soluble sugar 
content in rice embryos under different germination conditions.【Result】Rice embryos stained by TTC are divided 
into five situations: The entire embryo was stained darkly; The entire embryo was stained lightly; The coleorhiza was 
stained; The coleoptile was stained; The scutellum was stained. The influence of the four factors on the viability of rice seeds is as follows: staining time ＞ staining temperature ＞ TTC concentration ＞ imbibition time; The best condition for 
TTC staining of rice seeds is as follows: staining time 2 h, staining temperature 30℃ , TTC concentration 1%, imbibition 
time 3 h. Under different germination conditions, the changes of α-amylase, β-amylase activity and soluble sugars in 
rice seeds were consistent with the changes in seed germination rate. 【Conclusion】Under the best combination of TTC 
staining, the staining rate of rice seeds could accurately reflect the viability and germination ability of the seeds. Amylase 
activity and soluble sugar content may be used as important physiological indicators for predicting and evaluating rice 
seed vigor.]]></description>
<pubDate>2021/8/26 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[陈兵先，张　琪，戴彰言，高家东，张文虎，吴柔贤，宋松泉，刘　军]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>陈兵先，张　琪，戴彰言，高家东，张文虎，吴柔贤，宋松泉，刘　军</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202107001&flag=1]]></guid><cfi:id>72</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Research Advances of Haplotype Variation at Badh2 Gene and 2-Acetyl-1-pyrroline Bi osynthetic Pathway in Aromatic Rice]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202107002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Aromatic rice has long been favored by the world rice trade because of its pleasant scent. China has a long 
history of aromatic rice cultivation and diverse aromatic rice accessions. However, there is a real lack of top aromatic rice 
brands. Nowadays, there is an increasing demand for good-quality aromatic rice, leading to speed up the breeding process 
of high quality of aromatic rice varieties. The Badh2, encoding betaine aldehyde dehydrogenase gene, is the major genetic 
basis of fragrance in rice. The loss-of-function alleles of Badh2 accounts for accumulation of 2-acetyl-1-pyrroline（2AP）, 
which is widely regarded as the main compound responsible for the characteristic aroma. With the development of rice 
functional genomics, the Badh2 gene haplotypes in aromatic rice resources have been deeply explored and the biosynthesis 
pathway of 2AP has been preliminarily analyzed, which will speed up the process of aromatic rice breeding. This review focused on 19 Badh2 gene haplotypes which were found in aromatic rice accessions. The geographic locations of different types 
of haplotypes were mainly analyzed and the correlation between these haplotypes and 2AP concentrations were compared. The 
research advances of glutamate-proline metabolic pathway and polyamine metabolic pathway involved in 2AP biosynthesis 
pathway were demonstrated. Meanwhile, the 2AP distribution characteristics in aromatic rice grains were summarized. Two 
theoretical mechanisms of 2AP accumulation in grains were compared and a strategy to study the 2AP biosynthesis pathway 
changes at various grain developmental stages by multi-omics methods was proposed, with a view to serve as an inspiration for 
genetic utilization of aromatic rice resources and breeding of rice varieties with 2AP specific enrichment.]]></description>
<pubDate>2021/8/26 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[潘阳阳，黄道强，王重荣，李　宏，周德贵，王志东，陈宜波，赵　雷，龚　蓉，周少川]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>潘阳阳，黄道强，王重荣，李　宏，周德贵，王志东，陈宜波，赵　雷，龚　蓉，周少川</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202107002&flag=1]]></guid><cfi:id>71</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Analysis of Controlled Factors of Stable Carbon Isotope Composition in Tobacco Leaves]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202107003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was conducted to explore the controlled factors of the stable carbon isotope 
composition in tobacco leaves with a view to provide a new theoretical basis for the improvement of tobacco planting 
evaluation index system and the study of ecological adaptability mechanism.【Method】The stable carbon isotope 
composition（δ13C）analysis was carried out on tobacco leaves which were collected during the mature stage from four 
major first class tobacco growing areas in China, namely, Southwest China, Southeast China, upper and middle reaches of 
the Yangtze River and Huanghuai area.【Result】The δ13C values of tobacco leaves ranged from -27.76 ‰ to 25.39 ‰ , 
with an average value of -26.46‰ . The δ13C values decreased with longitude significantly, with a rate of 0.09‰ , and the 
values showed a quadratic parabola relationship with latitude. In addition, there were significant differences in δ13C values in different leaf positions, and the results showed as upper leaves ＞ middle leaves ＞ lower leaves. In terms of tobacco growing 
areas, δ13C value results of four tobacco growing areas showed as: Southwest planting area ≈ Huanghuai planting area ＞ 
Yangtze River planting area ＞ Southeast planting area. Moreover, the cluster analysis results showed that fragrant sweet tobacco 
and alcoholic sweet aroma tobacco were clustered clearly based on δ13C values of tobacco from different origins. However, the 
other four aroma types（burnt-sweet and burnt-fragrant type, mildly and honey sweet type, burnt-sweet and alcoholic sweet 
type and honey sweet type）cannot be clustered obviously as the independent variables.【Conclusion】The stable carbon 
isotope composition of tobacco leaves has a negative correlation with longitude and a quadratic parabolic relationship with 
latitude. The stable carbon isotope composition of tobacco leaves at different leaf positions is different. The δ13C value can be 
used to effectively cluster the fragrant sweet and alcoholic sweet aroma tobacco.]]></description>
<pubDate>2021/8/26 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[毛佳琦，郑允允，张二强，王　培，付玉洁，王　瑶]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>毛佳琦，郑允允，张二强，王　培，付玉洁，王　瑶</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202107003&flag=1]]></guid><cfi:id>70</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effects of Molybdenum Application on Growth and Fluorescence Parameters of Lycium ruthenicum Seedlings]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202107004&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was carried out to explore the effects of different molybdenum（Mo）
concentrations on the growth and fluorescence parameters of Lycium ruthenicum seedlings, and to preliminarily determine the optimal Mo concentration to promote the growth of L. ruthenicum seedlings, which provided a certain basic theoretical 
reference for the development of small berry industry.【Method】Taking L. ruthenicum seedlings as the research object, 
hydroponic planting experiments were conducted to explore the changes in root length, plant height, biomass, trace elements 
content and fluorescence parameters of L. ruthenicum seedlings under different Mo concentrations.【Result】（1）With 
the increase of Mo concentration, the biomass, root length and plant height of all the parts of L. ruthenicum seedlings showed 
a trend of first increasing and then decreasing. The Mo concentrations of 5, 10 and 20 μmol/L could significantly promote the 
various growth indicators of L. ruthenicum seedlings, and the Mo concentration of 10 μmol/L had the best comprehensive 
promotion effect; when the Mo concentration was 40 μmol/L, it had an inhibitory effect;（2）Mo application had a significant 
effect on the absorption of trace elements Mo, Zn and Fe, and the absorption and utilization of Mo element was synergistic, that 
of Zn was antagonistic, and that of Fe was antagonistic and synergistic. When Mo concentration was 10 μmol/L, absorption 
and utilization efficiency of each part in ruthenicum seedlings was relatively stable to trace elements Mo, Zn and Fe;（3）
With the increase of Mo concentration, the initial fluorescence（Fo）of L. ruthenicum showed a trend of first decreasing and 
then increasing, and there was a minimum value when the Mo concentration is 10 μmol/L. The trend of maximum fluorescence 
yield（Fm）, maximum photochemical efficiency（Fv/Fm）and actual photochemical efficiency（ΦPSⅡ ）was opposite 
to that of Fo, and there was a maximum when the Mo concentration was 5 μmol/L or 10 μmol/L.【Conclusion】There is an 
obvious correlation between the growth of L. ruthenicum seedlings and the concentration of Mo applied. Mo application at an 
appropriate concentration can significantly increase the growth of L. ruthenicum seedlings, and it will inhibit its growth when 
the concentration is too high. Experiments have found that the suitable Mo concentration range for the growth of L. ruthenicum
seedlings is 5 -20 μmol/L, with 10 μmol/L being the best.]]></description>
<pubDate>2021/8/26 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[聂必林，田中平，巫利梅，如马南木·尼合买提，吕海英]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>聂必林，田中平，巫利梅，如马南木·尼合买提，吕海英</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202107004&flag=1]]></guid><cfi:id>69</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Study on Wet Damage Index of Rape in Flowering and 
Pod-bearing Period in Hunan Province]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202106001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was carried out to obtain the wet damage index of rape during flowering and podbearing period, and provide a scientific basis for the monitoring and early warning of rape wet water damage.【Method】
Based on the yield observation data of rape from 4 agrometeorological observation stations in Nanxian, Huaihua, Yiyang 
and Hengyang of Hunan Province, and the meteorological data of flowering and pod-bearing period in the same year, the 
relationship between relative meteorological yield of rape and meteorological factors during the flowering and pod-bearing 
period of yield reduction year were analyzed, and the disaster-causing meteorological factors were obtained. By performing 
cluster analysis on the relative meteorological yield of yield reduction year and the disaster-causing meteorological factors of 
the same year, the wet damage index of rape was determined, and then independent observation data was used to test the wet 
damage index.【Result】The amount of precipitation and the number of precipitation days during the precipitation process 
are the main factors that cause the yield reduction of rape in Hunan Province. The index of mild wet damage for rape in 
Hunan Province is: 40 mm ≤ rainfall during precipitation ＜ 75 mm, 5 d ≤ precipitation duration ＜ 6 d , and the index for 
moderate or above wet damage is: rainfall during precipitation ≥ 75 mm, precipitation duration ≥ 6 d.【Conclusion】After 
independent data inspection, the above wet damage indexes proposed in the study are basically accurate, which can be used 
for agrometeorological disaster monitoring and early warning services.]]></description>
<pubDate>2021/7/21 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[袁小康]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>袁小康</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202106001&flag=1]]></guid><cfi:id>68</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effects of Drought Stress on Photosynthesis and Leaf Tissue Structure 
of Litsea coreana Levl. var. lanuginosa Cutting Seedlings]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202106002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was carried out to understand the effects of drought stress on photosynthesis and 
leaf tissue structure of Litsea coreana Levl. var. lanuginosa cutting seedlings.【Method】Three-year-old L. coreana Levl. 
var. lanuginosa cutting seedlings were used as experimental materials, and 4 drought stress treatments were set: CK （soil 
volume water holding capacity of 39.6%）, mild drought（soil volume water holding capacity of 29.2%）, moderate drought（soil 
volume water holding capacity of 19.5%）, and severe drought （soil volume water holding capacity of 9.7%）. The effects 
of drought stress on photosynthesis and leaf tissue structure of cutting seedlings of L. coreana Levl. var. lanuginosa were 
studied by analyzing the diurnal changes of net photosynthetic rate, the correlation between gas exchange parameters and 
environmental factors and the leaf transverse tissue structure.【Result】Under severe drought, the “photosynthetic siesta”of Litsea coreana Levl. var. lanuginosa cutting seedlings was obvious, with over 2 hours. The average net photosynthetic rate of 
photosynthesis was 1.9712 μmol/m2
·s, the photosynthetic capacity was low, and the photosynthetic rate correlation coefficient 
of relative humidity of leaf surface and net photosynthetic rate was -0.462, therefore, it is necessary to increase the air moisture 
and lower the temperature to maintain the normal photosynthetic physiology of the leaves. Under moderate drought, the total 
amount of chlorophyll in the cutting seedlings of L. coreana Levl. var. lanuginosa was higher（1.25 mg/L）, which could 
respond to drought stress. With the increase of drought degree, leaf stomatal conductance decreased. Leaf stomatal conductance 
under moderate and severe drought stress was about 0.03mol/m2
·s, which seriously affected its water use and gas exchange. 
The tissue structure of seedling leaves was also changing, the thickness of the upper epidermis became thinner, the palisade 
tissue became thicker, and the spongy tissue became thinner.【Conclusion】Drought stress can reduce the photosynthesis 
of L. coreana Levl. var. lanuginosa cutting seedlings, and it also changes the leaf tissue structure. The correlation between 
photosynthesis capacity and leaf tissue structure changes under drought stress needs to be further studied.]]></description>
<pubDate>2021/7/21 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[曾维军，屈坤杰，万　诚，李　鹏，席培宇，李蕾佳，王济红]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>曾维军，屈坤杰，万　诚，李　鹏，席培宇，李蕾佳，王济红</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202106002&flag=1]]></guid><cfi:id>67</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Response of Outcrossing Ability of Different Rice CMS Lines to Nitrogen Fertilizer Regulation]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202105001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The yield of hybrid rice seed production is affected by the difference of outcrossing habits of Male sterile lines, and the process of seed production has become a key link restricting the promotion of three-line hybrid rice.【Objective】In order to provide a new way to improve the yield of reproduction and seed production, the effects of five types of male sterile cytoplasm and fertilizer regulation techniques on the outcrossing habits of male sterile lines in hybrid rice were studied.【Method】The nucleo-cytoplasmic interactive sterile cytoplasm of W-type, JW-type, G-type, K-type and YS-type were 
selected to construct isonuclear-alloplasmic male sterile（CMS）lines. The outcrossing habit and reproductive yield of CMS lines were studied under different nitrogen fertilizer treatments with a view to explore the influence of cytoplasmic effect on the outcrossing ability of male sterile lines and its fertilizer regulation me chanism.【Result】The increase of reproductive yield of each isonuclear-alloplasmic CMS line was mainly controlled by the increase of effective panicle number, 1 000-grain weight and seed setting rate. Under the condition of 10 kg / 667m2 nitrogen fertilizer, the reproductive yield of JW and W CMS lines reached the highest, 259.20 kg / 667m2 and 244.04 kg / 667m2, respectively; while the yield of GA, KA and YSA could reach 250 kg / 667m2 with 18 kg / 667m2 nitrogen fertilizer, but there was a high risk of diseases and pests.【Conclusion】Cytoplasmic effect and its interaction with nitrogen fertilizer had significant effects on the main agronomic characters and outcrossing habits of CMS lines. The effect of nitrogen level on agronomic traits and reproductive yield of CMS lines was greater than that of cytoplasmic effect. Cytoplasmic effect mainly affected outcrossing habits of CMS lines such as stigma exposure.]]></description>
<pubDate>2021/7/4 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[钟　颖，刘　蓉，黄　苗，宋　翔，朱美霖，李纯华，胡运高]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>钟　颖，刘　蓉，黄　苗，宋　翔，朱美霖，李纯华，胡运高</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202105001&flag=1]]></guid><cfi:id>66</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Screening of Castor Germplasm with High Photosynthetic Efficiency]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202105002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The research of photosynthetic characteristics of different castor germplasms was carried out to provide references for the selection and utilization of castor germplasms with high photosynthetic efficiency.【Method】Based on principal component analysis and cluster analysis, a comprehensive evaluation of six photosynthetic parameters including intercellular CO2
 concentration (Ci), transpiration rate (Tr), stomatal conductance (Gs), net photosynthetic rate (Pn), leaf instantaneous water use efficiency (WUE) and transpiration efficiency (TE) of 29 castor 
germplasms from different regions were conducted to screen out excellent castor germplasm.【Result】The variation coefficients of the six photosynthetic parameters ranged from 16% to 35%. Among them, Pn and Gs were the highest at 35%, and Ci was the lowest at 16%. Correlation analysis revealed that Pn significantly negatively correlated with Ci and significantly positively correlated with both Tr and WUE. The results of principal component analysis showed that three principal components could explain 99.15% of the six photosynthesis-related parameters.These components were photosynthetic factor, stomatal factor and moisture factor. Cluster analysis based on photosynthetic parameters divided the 29 castor germplasms into 4 groups, of which Group II consisted of 4 materials (YSL-5, SD-21, A40-7, and B11-1), accounting for 13.79% of the total number of materials. These materials had the highest net photosynthetic rate, all exceeding the average net photosynthetic rate of the overall material, and the Pn, Gs and Tr in this group were all at a high level compared with those of other materials. Therefore, the four materials could be selected as castor germplasm with high photosynthetic efficiency suitable 
for breeding.【Conclusion】The castor germplasm with high photosynthesis rate, large stomatal conductance and relatively high leaf instantaneous water use efficiency can be used as intermediate material for breeding of castor variety with high photosynthetic efficiency.]]></description>
<pubDate>2021/7/4 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[顾帅磊，陆建农，杨　婷，Akwasi Yeboah，李东娜，曾泳怡，殷学贵]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>顾帅磊，陆建农，杨　婷，Akwasi Yeboah，李东娜，曾泳怡，殷学贵</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202105002&flag=1]]></guid><cfi:id>65</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Research Progress in Biosynthesis and Metabolism Regulation of Carotenoids in Tea Plants]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202105003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In addition to contributing to the color of the tea leaf, carotenoids are also the precursors of key aroma substances in tea. Carotenoids are degraded to many aroma substances with floral fragrance aroma by enzymatic (mainly by splitting dioxygenase CCD with carotenoids) or non-enzymatic reactions (high temperature, light, acid condition and other unknown factors) during tea processing. In view of the important contribution of carotenoids to tea quality, researches on carotenoids in tea has attracted the attention of many researchers in recent years. In order to clarify the biosynthesis and metabolism regulation mechanism of carotenoids in tea plants, based on the application of various tea germplasm resources and environmental factors, a series of related studies have been carried out by using biochemical and molecular methods. The article mainly summarizes the influence of tea plant resources (normal green tea and yellow/albino tea), tea plant growth environment (light and temperature), agronomic measures (shading treatment), and post-harvest processing techniques (withering and drying) on the biosynthesis and metabolism of tea carotenoids and the regulation mechanism. Finally, future research directions of carotenoids in tea are discussed, aiming to deeply understand the metabolism and regulation mechanism of carotenoids in tea and provide certain theoretical basis for the improvement of tea quality in the future.]]></description>
<pubDate>2021/7/4 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[傅秀敏，唐劲驰，杨子银]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>傅秀敏，唐劲驰，杨子银</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202105003&flag=1]]></guid><cfi:id>64</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Comparative Analysis of Growth Characteristics and Effective Components of Sarcandra glabra from Different Provenances]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202104001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】In order to screen out Sarcandra glabra with strong adaptability and high contents of 
effective components in Hunan Province, the plant height, ground diameter, leaf morphology, root growth, biomass, leaf 
photosynthetic parameters and effective component contents of 2-year-old seedlings of S. glabra from five provenances 
were measured and analyzed.【Method】The photosynthetic parameters of mature leaves were determined by LI-6400 
portable photosynthetic apparatus, the contents of isozinpidine and rosmarinic acid were determined by HPLC, and the contents of extracts were determined by hot dipping method. The five provenances of S. glabra were comprehensively evaluated 
by principal component analysis.【Result】（1）There were significant differences in plant height, ground diameter, leaf 
morphology, root growth and biomass among different provenances. The plant height, ground diameter, leaf area, root length, root 
surface area and biomass of S. glabra from Zhaoping, Guangxi were 35.53 cm, 4.03 mm, 302.99 cm2
, 508.80 cm, 150.43 cm2
and 17.06 g, which were significantly higher than those of other provenances.（2）There were significant differences 
in net photosynthetic rate, intercellular CO2
 concentration, stomatal conductance and transpiration rate among different 
provenances. The net photosynthetic rate of S. glabra from Zhaoping Guangxi was the highest, which was 3.91 µmol/m2
.s.
（3）There were significant differences in the contents of isofraxidin, rosmarinic acid and extract among different provenances. 
The contents of isofraxidin and rosmarinic acid of S. glabra from Zhaoping Guangxi were higher, which were 3.81 mg/g and 
44.08 mg/g, respectively, while the content of extract from Sanyuan, Fujian was higher, which was 26.52%.（4）According to 
the results of a comprehensive evaluation on the growth adaptability of different provenances in Hunan, the adaptability was 
showed as: Guangxi Zhaoping provenance ＞ Jiangxi Jiujiang provenance ＞ Hunan Yongding provenance ＞ Fujian Sanyuan 
provenance ＞ Guizhou Qiandongnan provenance.【Conclusion】S. glabra from Zhaoping of Guangxi and Jiujiang of Jiangxi 
have strong adaptability and growth potential to the environment of Hunan.]]></description>
<pubDate>2021/5/27 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[聂小英，朱春晓，郑东升，李自强，胡庆一，陈阳峰，肖深根]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>聂小英，朱春晓，郑东升，李自强，胡庆一，陈阳峰，肖深根</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202104001&flag=1]]></guid><cfi:id>63</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Study on Selenium-enriched Cultivation of Ganodermal ucidumin the Artificial Intelligence Climate Chamber]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202104002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The cultivation methods of selenium-enriched Ganoderma lucidum were studied in the 
artificial intelligence climate chamber in order to provide references for the commercial cultivation of G. lucidum and the 
research and development of selenium-enriched products.【Method】With selenium ore powder as selenium source and 
G. lucidum as selenium-enriched carrier, the selenium-enriched G. lucidum was cultivated by solid substrate cultivation 
method, and a comprehensive study was conducted combined with the polysaccharide and total triterpene contents.【Result】
Among the six treatments, each solid substrate bacteria package was added with 0 (CK), 1 000, 2 000, 3 000, 4 000 and 
5 000 μg selenium, and the selenium contents in spore powder were 0.13, 1.10, 3.20, 4.40, 6.80 and 7.70 μg/g, with the seenrichment coefficients of 1, 8.5, 24.6, 33.8, 52.3 and 59.2, respectively. The selenium contents of G. lucidum fruit body 
were 0.35, 1.30, 5.15, 10.90, 16.25 and 17.05 μg/g, with the se-enrichment coefficients of 1, 3.7, 14.7, 31.1, 46.4 and 48.7, respectively.【Conclusion】There was positive correlation between the selenium contents in spore powder and fruit body, 
which increased with the increase of selenium in the solid substrate bacteria package. Among the six treatments, there was 
no significant difference in G. lucidum spore powder and fruit body production, as well as in polysaccharide and total triterpene 
contents.]]></description>
<pubDate>2021/5/27 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[张玉华，张北壮，黄仕祥，何焕清，龚玉莲，曾碧健，蔡文韬，王　璐]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>张玉华，张北壮，黄仕祥，何焕清，龚玉莲，曾碧健，蔡文韬，王　璐</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202104002&flag=1]]></guid><cfi:id>62</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Analysis on the Variation Characteristics of Climate Resources and Its Influence During Tea Growing Season in Southern Anhui Province]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202104003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】By analyzing the variation characteristics of climate resources during tea growing season in 
southern Anhui under the background of climate warming, the study aimed to provide a scientific basis for the rational use 
of climate resources and response to climate change during tea production in southern Anhui.【Method】Based on the data 
including daily average temperature, sunshine hours, precipitation and relative humidity from 19 meteorological stations in 
southern Anhui during 1971-2019, the study analyzed the variation characteristics of climate resources including heat, light 
and precipitation during the tea growing season as well as the tea harvesting period in mountain areas of southern Anhui.
【Result】The heat resource during the growth of tea increased obviously in mountain areas of southern Anhui in recent 50 
years, in which the annual average temperature, the accumulated temperature above 10℃ , and the number of suitable days 
for tea growth increased per 10 years by 0.29℃ , 111.7℃ and 2.7 d, respectively. The light resource decreased significantly, 
and the decreasing range of annual sunshine hours was 57.5 h per 10 yaers. The variation of precipitation resources varied 
among the precipitation and relative humidity, the former increased insignificantly by 13.7mm per 10 yaers, and the latter decreased significantly by 0.5% per 10 yaers.【Conclusion】Due to the climate warming, the harvesting periods of early and 
middle-late growing tea was significantly advanced by 4.2 d and 3.6 d per 10 yaers, respectively. The changes of temperature 
and precipitation caused by climate warming have a great impact on yield per mu of tea in mountain areas of southern Anhui.]]></description>
<pubDate>2021/5/27 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[徐建鹏，伍　琼，王　晖]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>徐建鹏，伍　琼，王　晖</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202104003&flag=1]]></guid><cfi:id>61</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Study on the Latex Physiological Characteristics of Six Introduced Hevea brasiliensis Varieties]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202104004&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The latex physiological characteristics of six introduced Hevea brasiliensis varieties 
were analyzed to provide a basis for the enrichment of latex production and flow theory and expanding the planting of H.
brasiliensis.【Method】With RRIM600 as the control, the number of secondary laticifer and the latex parameters of six 
introduced H. brasiliensis varieties, such as latex yield, dry rubber content, initial flow rate, content of sucrose, phosphorus, 
Mg2+ and thiol were measured.【Result】The dry rubber yield of Reshi11-107 was 73.9 g per plant, the average number of 
secondary laticifer was 16.3, the content of sucrose was 8.58 mmol/L, with higher thiol content and initial flow rate and lower 
plugging index. The dry rubber yield of Reshi11-9 was 14.5 g per plant (the lowest among the 6 varieties), and the sucrose 
content was 15.32 mmol/L, which was significantly higher than that of the other varieties, while the thiol content and initial 
flow rate were significantly lower than those of the other varieties. The determined parameters of Reshi11-39 were similar 
to those of Reshi11-9. The thiol content was 0.64-0.70 mmol/L in Reshi11-1, Reshi11-2 and Reshi11-3, significantly higher than that of the control, while the sucrose content was 4.37 - 5.17 mmol/L, significantly lower than that of the control. 
Compared to the control, there was no significant difference in dry rubber content.【Conclusion】Reshi11-107 had better latex 
physiological characteristics and good potential in latex production. The regeneration of latex in Reshi11-9 and Reshi11-39 was 
insufficient. There were better latex stability, smooth latex flow, high sugar utilization efficiency, and general latex production 
potential in Reshi11-1, Reshi11-2 and Reshi11-3.]]></description>
<pubDate>2021/5/27 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[张晓飞，黄　肖，李　琛，左如斌，李维国]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>张晓飞，黄　肖，李　琛，左如斌，李维国</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202104004&flag=1]]></guid><cfi:id>60</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effect of Planting Density on Grouting and Dehydration of Spring Maize in Eastern Hebei Province]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202102001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The effects of different planting densities on spring maize grouting, dehydration and yield 
characters were studied to provide scientific basis for high-density planting and yield increase of spring maize in eastern 
Hebei Province.【Method】The good varieties （Jingnongke 728 and MC812） with appropriate poling characteristics and 
suitable for mechanical harvesting screened in early stage were selected to conduct tightness resistance test, and five planting 
densities（60 000 plants/hm2, 67 500 plants/hm2, 75 000 plants/hm2, 82 500 plants/hm2 and 90 000 plants/hm2） were set. 
The effects of different planting densities on grouting, dehydration and yield characters were studied.【Result】With the 
increase of plating density, the spike number and yield of the two varieties showed an increasing trend, and both reached 
the maximum under the density of 90 000 plants/hm2. The 100-grain weight of seeds showed a S-shaped（“slow-fast- slow”）upward trend during grain filling, the grain filling rate and dehydration rate showed a single-peak curve of“first rising 
then falling”, and the time to reach the peak value was consistent with the changing trend, and the peak value appeared on 
the 26th day after spinning. The rates of stem and bract dehydration showed a trend of decreasing first and then increasing. The 
maximum dehydration rate and filling rate appeared at the planting density of 60 000-75 000 plants/hm2.With the increase of 
silking days, the moisture contents of seeds, stems and bracts of the two varieties showed a“slow-fast-slow”decreasing trend 
on the whole, and the moisture content under the planting density of 60 000-75 000 plants/hm2 was lower than that of 82 500-
90 000 plants/hm2.【Conclusion】To ensure high yield of spring maize in eastern Hebei Province, it is suggested that the 
planting density is 90 000 plants/hm2.]]></description>
<pubDate>2021/3/8 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[刘学锐 1
，于青松 1
，窦克磊 1
，郭雪云 1
，姚丹丹 1
，郝茹雪 1
，张　萌1
，杨　晴 1，2]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>刘学锐 1
，于青松 1
，窦克磊 1
，郭雪云 1
，姚丹丹 1
，郝茹雪 1
，张　萌1
，杨　晴 1，2</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202102001&flag=1]]></guid><cfi:id>59</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Expression Analysis of Group Ⅲ WRKY Transcription Factors in Sorghum Under Drought Stress]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202102002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】Group Ⅲ WRKY genes play an important regulatory role in plant response to abiotic stress. 
The research was performed to analyze the expression profiles of their family members in response to drought stress so as to 
provide references for the study of biological function of such genes.【Method】Downloading the microarray data from NCBI 
database, the expression profiles of group Ⅲ WRKY genes in response to drought, heat and combined stress were analyzed. 
Seedlings of sorghum variety BTx623 were treated with 20% PEG6000 under simulated drought stress, the expression 
profiles of these genes were detected by qRT-PCR techniques.【Result】Microarray analysis shows that SbWRKY14 and 
SbWRKY32 are down-regulated under drought, heat and combined stress. SbWRKY39 is down-regulated under drought and 
heat stress, but up-regulated under combined stress. SbWRKY41 is up-regulated under three stress treatments. qRT-PCR 
analysis shows that SbWRKY10 is down-regulated at 3 and 6 h, but up-regulated at 12 h. SbWRKY14 is down-regulated at 
1, 6 and 12 h. SbWRKY16, SbWRKY38, SbWRKY41 and SbWRKY42 are down-regulated at 1, 3, 6 and 12 h. SbWRKY17 is down-regulated at 1, 6 and 12 h. SbWRKY39 and SbWRKY89 are down-regulated at 1, 3 and 12 h. SbWRKY53 is downregulated at 1 and 12 h while up-regulated at 6 h. The expression of SbWRKY75 is down-regulated at 1 h and up-regulated at 3, 
6 and 12 h. SbWRKY93 is up-regulated at 6 h.【Conclusion】These results indicate that the group Ⅲ WRKY genes of sorghum 
may play an important role in response to drought stress, and different SbWRKY genes may play different regulatory roles under 
drought stress.]]></description>
<pubDate>2021/3/8 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[徐　磊，刘　洋]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>徐　磊，刘　洋</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202102002&flag=1]]></guid><cfi:id>58</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Study on Effects of Glutinous Sorghum and Soybean Intercropping Mode on Agronomic Characters of Fresh Soybean and Economic Benefits]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202102003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was conducted to explore the growth and yield formation rule of fresh soybean 
in glutinous sorghum and soybean intercropping system, and to objectively analyze the economic benefits of intercropping 
system.【Method】The single factor randomized block design was set for 3 cultivation modes, namely, intercropping of two 
lines of sorghum and two lines of soybean（A1）, intercropping of two lines of sorghum and four lines of soybean（A2）, 
and soybean monoculture（A3）as CK, to analyze the effects of the above 3 modes on soybean agronomic characters, dry 
matter accumulation, yield and system economic benefits.【Result】In the intercropping system, fresh soybean（as a low 
crop）, affected by the shading of sorghum in the middle and late growth periods, had increased plant height and decreased 
stem diameter, specific leaf weight, stem dry matter accumulation, leaf area index and yield character indexes, and the yield of fresh soybean was lower than that of the net crop. Under the intercropping mode, the land equivalent ratio（LER）of A1 and 
A2 were 1.43 and 1.47, respectively, indicating that sorghum and soybean intercropping system had significant yield advantage. 
For the overall output value, treatment A3 was significantly lower than that of treatment A1 and treatment A2 by 41.5% and 
39.3%. For the analysis of economic benefits of different planting modes, in addition to the material cost and labor cost invested 
in production, the net incomes of A1, A2, A3 were 7 937.29 yuan/ha, 7 795.29 yuan/ha and 5 449.68 yuan/ha, respectively.
【Conclusion】The A1 cultivation model has the best overall economic benefits, with the optimal yield increase. It can not only 
meet the needs of raw materials for wine making, but also alleviate the contradiction between the supply and demand of soybean 
in this area. It is an economic and efficient cultivation mode suitable for promotion and planting in this area.]]></description>
<pubDate>2021/3/8 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[杜勇利，周俊辉，廖霏霏，刘兴贵，熊　湖，张　林，殷　勇，张德银]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>杜勇利，周俊辉，廖霏霏，刘兴贵，熊　湖，张　林，殷　勇，张德银</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202102003&flag=1]]></guid><cfi:id>57</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Analysis of Root Growth Characteristics and Salt Resistance of Tibetan Highland Barley at Bud Stage under NaCl Stress]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202102004&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was conducted to understand the influence of NaCl stress on seedling root morphology 
of Tibetan highland barley at the bud stage and its relationship with salt tolerance, and to screen out salt-tolerant barley 
varieties（lines）.【Method】With quartz sand as the substrate, the highland barley was treated with 0 mmol/L, 50 mmol/L, 
100 mmol/L, 150 mmol/L, 200 mmol/L and 250 mmol/L NaCl solution, and NaCl stress of median lethal concentration（LC50）
was obtained by regression analysis with the relative vigor index（RVI）as an indicator. The LC50 of NaCl was used to treat 28 
highland barley samples. The effects of NaCl stress on the morphological characteristics of highland barley roots were studied, 
and salt-tolerant highland barley varieties（lines）were screened out.【Result】The RVI of Tibetan highland barley seedlings showed a decreasing trend with the increase of NaCl solution concentration. The regression equation of NaCl stress concentration 
and RVI was: y=-0.0022x + 0.9107. With LC50 as the concentration stress, the germination rate, bud length, longest root length, 
fresh weight per plant and dry weight per plant of highland barley seedlings at the bud stage were all affected to varying degrees. 
Among them, bud length was the most sensitive and fresh weight per plant was the most insensitive. Correlation analysis showed 
that the RVI was significantly correlated with the relative germination rate, extremely significantly correlated with the longest root 
length, and extremely significantly positively correlated with the dry weight per plant. The cluster analysis results showed that, 
at the third Euclidean distance, the highland barley could be divided into four types, of which the RVI of type A reached 0.71, 
with the strongest salt tolerance.【Conclusion】The median lethal concentration of highland barley under NaCl stress is 186.68 
mmol/L. The germination rate, root length and dry weight per plant can be used as auxiliary indicators for the selection of salttolerant materials for highland barley. Combined with the RVI and cluster analysis, 3 materials（WDM03018, WDM03722, 
WDM04526）with strongest salt tolerance were screened out.]]></description>
<pubDate>2021/3/8 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[杨春葆，原红军]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>杨春葆，原红军</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202102004&flag=1]]></guid><cfi:id>56</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Screening of New Flue-cured Tobacco Varieties with Strong Aroma Characteristics in Southern Jiangxi]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202102005&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was conducted to screen out excellent flue-cured tobacco varieties with strong 
adaptability and provide variety resources for tobacco production in Jiangxi.【Method】A comparative experiment of 
seven new introduced flue-cured tobacco varieties （lines）including NC102, F31-2, NX0914 and etc., was conducted in 
southern Jiangxi tobacco-growing area. The photosynthetic characteristics, disease resistance, economic traits and internal 
quality of different flue-cured tobacco varieties under local ecological conditions were comprehensively analyzed.【Result】
Under the ecological conditions of southern Jiangxi, the resettling period of F31-2, NX0914, and 20810 was about 39 
days, showing early and rapid growth, low natural incidence of climatic spot disease, TMV and bacterial wilt disease, good 
economic benefits. The output of these varieties was 16.2%-41.9% higher than that of the control K326. The chemical 
composition indicators such as total nitrogen （1.57%-1.72%）, nitrogen-nicotine ratio （0.77-0.90） and difference of 
total sugar and reducing sugar （1.52-2.23） were more suitable. The flue-cured tobacco style was moderate（+）-strong or strong flauor type. And the sensory quality was comparable with K326, with good industrial availability and comprehensive 
performance. The comprehensive performances of NC102 and Yunyan 201 were general, and those of Zhongyan 100 and 13-4 
were moderate, with general adaptability to the local ecological conditions.【Conclusion】F31-2, NX0914 and 20810 were 
worthy of further demonstration and extension.]]></description>
<pubDate>2021/3/8 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[苑举民 1
，丁永亮 1
，刘润生 2，张启明 1
，李红霞 3，何宽信 1
，李　卓 1
，陈仁霄 1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>苑举民 1
，丁永亮 1
，刘润生 2，张启明 1
，李红霞 3，何宽信 1
，李　卓 1
，陈仁霄 1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202102005&flag=1]]></guid><cfi:id>55</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Introduction, Identification and Screening of 
Fruit Type Super-sweet Corn Varieties]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202101008&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was performed to select new super-sweet corn resources of fruit type that suitable 
for planting under sub-tropical conditions in Guangdong.【Method】Sixty-six new super-sweet corn varieties of fruit 
type, introduced from domestic and overseas, were evaluated for 3 years（5 seasons）. Twenty high-quality varieties of 
which were selected for comparison test, and the adaptability, resistance, plant characters, ear characters, yield and quality 
characters were identified and analyzed.【Result】Results of field observation and indoor test showed that the 20 varieties 
were early-maturing and short stem type, characterized by short growth period, good plant uniformity, shorter stem and 
lower ear position. The shape was even in the ear head and base, and the size of grains was small to medium. With thin seed 
coat, crisp taste, high sugar content and low water content, slow sugar degradation, long shelf life, the fresh ear had the same 
sweetness when it was raw or cooked.【Conclusion】The different indexes showed that ten varieties（‘GT-11’,‘Cu
itian’,‘Shengtian1365’,‘Shengtian5590’,‘BMB380’,‘Jingbaitian456’,‘Shengtianbaizhu’,‘Gaobo’,‘
Wanda Bingtang’,‘Baizhenzhu 627’） had higher yield than that of the CK significantly, could be used as the original 
materials of inbred lines for breeding with good comprehensive traits. In addition, five varieties including ‘Shengtian5788’, 
‘Shengtian169’,‘Kupula’and‘Baimawangzi’,‘Shuang Xi’, with less yield, should be synthesized hybrids with several and separated good strain for utilization. The other varieties that suitable for planting in Guangdong with the least yield 
but highest quality, including ‘Zhenzhu’, ‘Baixuegongzhu’, ‘Taiwan Xianlv’and‘Yuebaitian 2’, should be further 
improved and utilized through traditional breeding and modern biotechnology.]]></description>
<pubDate>2021/1/26 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[WANG Qiuyan, TIAN Yaojia, WU Bei, YE Weizhong，CHEN Hongdi]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>WANG Qiuyan, TIAN Yaojia, WU Bei, YE Weizhong，CHEN Hongdi</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202101008&flag=1]]></guid><cfi:id>54</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Study on the Characteristics of Biomass Accumulation 
and Water Requirement of Disease-free 
Sugarcane Original Seedlings]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202101009&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was conducted to explore the rules of growth and water requirement of diseasefree sugarcane original seedlings, and provide a reference for the field breeding and water management of disease-free 
sugarcane original seedlings.【Method】In this study, by analyzing the dry matter accumulation rule of the diseasefree sugarcane seedlings with the meteorological data of Guangxi Fusui Experimental Base, the crop coefficient method 
was used to calculate the water requirement and water deficit in each growth period of the disease-free sugarcane orig seedlings in Fusui County, Guangxi.【Result】The dry matter accumulation of the disease-free sugarcane seedlings was 
mainly concentrated in the growth period of stem elongation. The stem elongation stage started from mid-August to the end of 
October, with an average daily dry matter accumulation of 2.92 g. After November, the average daily dry matter accumulation 
rate decreased to 1.77 g, and about 15 healthy stems could be harvested in late December. The water requirement of diseasefree sugarcane original seedlings showed a decline trend after an initial ascent. In the period of mid-August to late September, 
the water requirement was the largest, and the daily water requirement reached 5.5 mm. During the growth periods of the 
disease-free sugarcane original seedlings, the rainfall at the Fusui test site in Guangxi was mainly concentrated from mid-July 
to mid-September, with a cumulative rainfall of 177.9 mm, and less rainfall from late September to December, with a cumulative 
rainfall of only 22.3 mm. The disease-free sugarcane original seedlings showed water surplus only at the seedling stage, and the 
water deficit continued from late July to December, with a total deficit of 473.4 mm.【Conclusion】Through the above analysis, 
the dry matter accumulation characteristics and water requirement rules of the disease-free sugarcane original seedlings were 
clarified, which provided theoretical basis and references for rational cultivation and scientific irrigation in the field breeding 
and large-scale production of disease-free sugarcane original seedlings in the future.]]></description>
<pubDate>2021/1/26 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[JIANG Shuting1, 2，PENG Lishun2，CAO Zhengying2，YANG Benpeng2，YANG Xue2]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>JIANG Shuting1, 2，PENG Lishun2，CAO Zhengying2，YANG Benpeng2，YANG Xue2</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202101009&flag=1]]></guid><cfi:id>53</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Creation of High Oleic Acid Rice Mutant by Targeted Knockout of OsFAD2 via CRISPR/Cas9 Genome Editing Technology]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202111001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】Rice Fatty Acid Desaturase 2 gene（FAD2）encodes the fatty acid desaturase and converts oleic acid（C18∶1）into linoleic acid（C18∶2）, the mutant of which is capable of improving the content of oleic acid in rice. To obtain the high oleic acid rice mutant and facilitate the development of rice bran oil, site-specific editing of OsFAD2 is conducted by using the CRISPR/Cas9 technology.【Method】 Nipponbare callus was used as explants to generate the transgenic plants by agrobacterium-mediated transformation protocol with CRISPR/Cas9-FAD2-sgRNA vector. Sanger sequencing and fluorescent quantitative PCR were used to identify the positive transgenic plants.Finally, gas chromatography-mass spectrometer（GC-MS）was employed to detect the content variation of fatty acids. 【Result】Gene target sequencing suggested that three OsFAD2 knockout plants contained the genome bases variation in T0 generation, but only one positive transgenic line did not present off-target phenotype. Further, positive transgenic plant seeds were reproduced to T1 generation, as a result, OsFAD2 mutation generated genetic homozygosis and stable sequence, and qRT-PCR detection indicated that the relative expression of OsFAD2 decreased significantly compared with that of wild-type plant. Fatty acid composition detection suggested that the oleic acid increased by 30% approximately in the T1 seeds of positive knockout lines.【Conclusion】High oleic acid rice mutants were obtained by targeted knockout of the coding sequence of OsFAD2 via CRISPR/Cas9 technology, providing germplasm resources for subsequent high-oleic rice bran oil breeding.]]></description>
<pubDate>2021/12/13 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[任代胜，刘　浩，乔保建]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>任代胜，刘　浩，乔保建</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202111001&flag=1]]></guid><cfi:id>52</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Study on Carbon Footprints and Economic Benefits of Different Rice Cropping Patterns in Double Cropping Rice Area of Southern China]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202111002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】Based on the study on carbon footprints of different cropping patterns in double cropping rice area of southern China, this paper compared and analysed the cropping patterns in combination with economic benefits, aiming to provide a reference for making agricultural production policies and a new way for carbon sequestration and emission reduction in agriculture.【Method】The output values and production cost inputs of rice, oil crops and vegetable crops were used to calculate the carbon footprints of indirect carbon emissions（chemical fertilizer, pesticide, agricultural film and agricultural machinery）of different planting patterns, and the economic benefits of various patterns were analysed.【Result】Semilate rice had the highest carbon footprint〔947.8 kg/hm2（CO2-eq）〕, and early rice had the lowest carbon footprint〔927.4 kg/hm2（CO2-eq）〕. Semilate rice of Zhejiang Province had the highest carbon footprint〔1 057.3 kg/hm2（CO2-eq）〕, and that of Hainan Province had the lowest carbon footprint〔747.8 kg/hm2（CO2-eq）〕. The average carbon footprints of single, double and triple cropping patterns were 939.0, 2 910.0 and 3 961.8 kg/hm2（CO2-eq）, respectively. Among the agricultural inputs, carbon footprint of fertilizer accounted for the largest proportion, with an average of 60.2%. Among different cropping patterns, the output value of triple cropping pattern was the highest, with an average value of nearly 130 000 yuan/hm2, and the costprofit ratio of early rice was the lowest, which was -11.2%. The carbon footprints and production cost compositions of various cropping patterns were similar, but the proportion of each factor varied greatly, and there was the greatest difference in fertilizer and labour.【Conclusion】The output value of the triple cropping pattern is the highest, which plays a good role in guaranteeing China's food security and improving farmers' income, while its carbon footprint is also higher than that of the single and double cropping patterns. There is a significant positive correlation between carbon footprint and output value. The carbon footprint of average net profit per unit of the triple cropping pattern is the lowest. Reducing fertilizer consumption is the key way to reduce carbon footprint, and reducing labour cost is the main way to reduce production cost and increase farmers' income.]]></description>
<pubDate>2021/12/13 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[何　浩，伍龙梅，黄　庆，邹积祥，何瑞毓，黄海鹏，王天平，林鸿生]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>何　浩，伍龙梅，黄　庆，邹积祥，何瑞毓，黄海鹏，王天平，林鸿生</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202111002&flag=1]]></guid><cfi:id>51</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[QTL Mapping of Vitamin C Content in Sweet Corn]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202111003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】In order to exploit and utilize high vitamin sweet corn germplasm resources, QTL mapping of vitamin C content in sweet corn was carried out.【Method】The inbred lines T77 (high VC) and T15 (low VC), which have significant differences in vitamin C content, were used as parents to prepare the hybrid combination T77×T15, and the combination F2 was used as mapping population to construct SSR molecular marker genetic linkage map. Combined with the vitamin C content of each individual ear in F2, QTL mapping of vitamin C content in sweet corn was carried out by using compound interval mapping method.【Result】Five related QTL were detected, which were located on chromosome 2, 3 and 6. One vitamin C QTL (qVC-ch.2-1) was detected in the bin2.04-2.05 region of chromosome 2, with an additive effect value of 2.23, which could explain 17.16% of phenotypic variation. Two QTL for vitamin C content (qvc-ch.3-1 and qVC-ch.3-2) were detected on chromosome 3, which were located in bin3.00-3.04 and bin3.06-3.07 respectively, with additive effect values of 1.17 and 1.40, and phenotypic contribution rates of 6.64% and 4.15% respectively. Two QTL for vitamin C content (qvc-ch.6-1 and qVC-ch.6-2) were detected on chromosome 6, which were located in 6.05 and 6.05-6.06 regions, with additive effects value of 0.43 and 1.83, and contribution rates of 6.59% and 20.87%, respectively.【Conclusion】The study on QTL mapping of vitamin C content would provide a theoretical basis for breeding sweet corn varieties with high quality and nutrition in breeding practice.]]></description>
<pubDate>2021/12/13 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[蒋　锋，闫　艳，罗智佳，陈青春，张姿丽，刘鹏飞]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>蒋　锋，闫　艳，罗智佳，陈青春，张姿丽，刘鹏飞</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202111003&flag=1]]></guid><cfi:id>50</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Embryogenic Callus Induction and Somatic Embryogenesis of Ipomoea batatas from Vietnam]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202111004&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】Purple sweet potato〔Ipomoea Batatas（L.）Lam〕from Vietnam is of excellent quality with uniform tuber and good commodity but low yield and urgently needs genetic improvement of yield traits. Somatic embryogenesis is the basis of rapid reproduction and stable sex, which is of great significance to the genetic improvement of purple sweet potato. The explants of Vietnam small purple sweet potato were treated with hormones to study the somatic embryo regeneration pathway. The experiment provided a new method for screening new materials with high yield and good quality of purple sweet potato by somaclonal variation.【Method】Purple sweet potato from Vietnam was used as the material, and the leaf and stem segments were used as explants. The effects of plant growth regulation substance types（6-BA, NAA, 2,4-D and ABA）and ratios on the purple sweet potato from Vietnam were discussed. Somatic embryogenesis and plant regeneration system for purple sweet potato from Vietnam were established.【Result】The leaf and stem segments induced callus culture mediau were the same and the degree of difficulty was consistent. The induction formula was MS + 1.0 mg/L 6-BA + 0.2 mg/L NAA. The normal callus was induced to form embryonal callus and 2,4-D played an important role, and other hormones played an auxiliary role. The induction formula was MS + 0.1 
mg/L 6-BA + 2.0 mg/L 2,4-D. Somatic embryos were induced from embryonic callus and ABA played an important role and suitable medium for further development and differentiation was MS + 0.1 mg/L 6-BA + 0.2 mg/L NAA +0.5 mg/L ABA.【Conclusion】The best induction formula for callus of leaves and stems was MS + 6-BA 1.0 mg/L 6-BA + 0.2 mg/L NAA. The callus was transformed into embryogenic callus by MS + 0.1 mg/L 6-BA + 2.0 mg/L 2,4-D. Somatic embryo formation from embryogenic callus was treated with MS + 0.1 mg/L 6-BA + 0.2 mg/L NAA+ 0.5 mg/L ABA.]]></description>
<pubDate>2021/12/13 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[胡根海，张晓红，赵元增]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>胡根海，张晓红，赵元增</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202111004&flag=1]]></guid><cfi:id>49</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Targeted Editing of OsIDQ1 Gene in Rice Based on CRISPR /Cas9 Technology]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202208001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】IQD gene family proteins are plant specific calmodulin-binding target proteins, which play an 
important role in plant defense and development regulation. The interaction between Pik-H4 and OsIQD1 was found in the 
yeast double hybrid screening experiment in laboratory. In order to reveal the specific biological functions of OsIQD1 in rice 
blast resistance, OsIQD1 gene was edited by using CRISPR/Cas9 editing technique.【Method】OsIQD1 was obtained by 
sequence alignment. Two 20 bp editing targets were designed in exon 1 and exon 5 of OsIQD1 (DUF4005 domain), and the 
nucleotide fragments of the two targets were cloned into pRGEB32 vector to obtain pRGEB32-OsIQD1-gRNA vector. The 
rice Pik-H4 NIL callus was transformed by agrobacterium-mediated method. Transgenic positive plants were obtained by 
regeneration culture and hygromycin resistance screening. PCR and sequencing were performed on the target region sequences of transgenic plants of T0
 generation to analyze the mutation types of osiqd1.【Result】The transgenic regenerated plants 
were identified by PCR with hygromycin resistance gene HPT Ⅱ , and 30 positive lines were obtained. Sequencing analysis 
of the sequences near the target site of T0
 generation plants showed that OsIQD1 gene was successfully edited, and the editing 
efficiency of the two sites was 21.67% and 26.67%, respectively. There was one homozygous mutant line in target 2 region. 
【Conclusion】The study results provide genetic material for further studies on the mechanism of osiqd1 mutation involved in 
calcium ion/calmodulin signaling pathway, and OsIQD1 is preliminarily presumed to be involved in the basic immune response 
of plants.]]></description>
<pubDate>2022/10/9 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[LIN Chunzi, XIE Huabin, HUANG Qiwei, GAO Shang, WANG Jiafeng]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LIN Chunzi, XIE Huabin, HUANG Qiwei, GAO Shang, WANG Jiafeng</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202208001&flag=1]]></guid><cfi:id>48</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effects of Cultivation Measures on Yieldand Quality of Yunkejing 5]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202208002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was carried out to investigate the effects of cultivation measures (transplanting 
density, nitrogen application rate) on the yield and quality of high-quality japonica rice variety Yunkejing 5.【Method】
Yunkejing 5 was used as tested material, and the split-plot design was adopted in the field. Four nitrogen levels (0, 150, 240 
and 330 kg/hm2
) and four transplanting densities (240 000, 300 000, 360 000 and 420 000 seedlings/hm2
) were set. The yield 
characters, SPAD value, brown rice rate, amylose, polished rice rate, chalky grain rate, protein content and gel consistency 
were determined to explore the effects of nitrogen application rate and cultivation density on yield and quality of japonica rice Yunkejing 5.【Result】In the range of 0-330 kg/hm2
, with the increase of nitrogen fertilizer application rate, tillers were 
increased significantly, and the number of individual tillers was the highest under high nitrogen rate, reaching 18.80 per cluster; 
with the increase of transplanting density, tillers were gradually decreased. The yield showed a downward trend with the increase 
of transplanting density. Under the treatments with various nitrogen application rates, the highest yield was 13 308 kg/hm2 when 
the transplanting density was 240 000 seedlings/hm2
. Yunkejing 5 was apt to obtain high yield at the rate of 240 kg/hm2
, and 
the appropriate transplanting density could further improve the rice yield. With the gradual increase of the amount of nitrogen 
fertilizer, the chalky grain rate, chalkiness degree and gel consistency showed an increasing trend. A higher polished rice rate 
could be obtained with a transplanting density of 360 000 seedlings/hm2 under various nitrogen application rates, with a highest 
rate of 75.10%. The head rice rate was higher under high nitrogen rate and high density, the brown rice rate and protein content 
were higher at high nitrogen application rates of 240 kg/hm2
 and 330 kg/hm2
, indicating that high nitrogen fertilizer could 
increase the brown rice rate and protein content of rice quality.【Conclusion】Under the combination of nitrogen application 
rate of 240 kg/hm2
 and transplanting density of 240 000 seedlings/hm2
, the maximum yield of Yunkejing 5 is 13 308 kg/hm2
. 
The comprehensive judgment of rice quality is the second grade, which is the optimal combination and can be applied to actual 
production.]]></description>
<pubDate>2022/10/9 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[CUN Jie1,2 , LI Xiaolin1
, HUANG Xiaorong1,2, GUAN Junjiao1
, KUI Limei1
, 
GU Anyu1
, HU Maolin3
, ZHANG Jianhua1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>CUN Jie1,2 , LI Xiaolin1
, HUANG Xiaorong1,2, GUAN Junjiao1
, KUI Limei1
, 
GU Anyu1
, HU Maolin3
, ZHANG Jianhua1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202208002&flag=1]]></guid><cfi:id>47</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Genetic Analysis and QTL Mapping ofPericarp Thickness in Sweet Corn]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202208003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】In order to study the genetic mechanism of sweet corn pericarp thickness and select highquality sweet corn varieties, the major genes and polygenes genetic analysis and QTL mapping of sweet corn pericarp 
thickness were carried out.【Method】The sweet corn inbred lines T15 and T77 with large differences in pericarp thickness 
were selected to prepare hybrid combination (T77×T1). The F2
 population of the combination was used as the experimental 
material, the main genes and polygenes hybrid genetic method was used to analyze relevant parameters of the genetic model; 
Combined with the pericarp thickness and SSR genetic linkage map of each individual plant in F2
 population, QTL mapping 
of pericarp thickness in sweet corn was carried out by using composite interval mapping method.【Result】It was found that 
A-1 was the optimal model for sweet corn pericarp thickness, that is, an additive and partially dominant genetic model 
controlled by a pair of major genes, and the heritability of major genes was 69.10%. There were three QTLs identified on chromosomes 5 and 8 respectively, which were related to pericarp thickness. Two QTLs were detected in region bin 5.04 of 
chromosome 5, which were located in the marker interval bnlg150-bnlg653 and bnlg653-bnlg1208 respectively, and the 
additive effect values were -2.39 and -3.01 respectively. The QTL located on chromosome 8 was in bin8.03-bin8.04, the 
marker interval was umc1741-bnlg2046, the additive effect value was -3.06, and the contribution rate to phenotype was 
22.02%.【Conclusion】The pericarp thickness of sweet corn is dominated by the effect of major genes. In breeding practice, 
genetic improvement and selection can be carried out in the early generation. The QTLs detected in this experiment can be used 
for molecular marker assisted selection and quality breeding.]]></description>
<pubDate>2022/10/9 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[JIANG Feng1,2, LIANG Rilang1
, YAN Yan1
, LIANG Zeen1
, HUANG Zhenggang1
, LIU Pengfei1,2]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>JIANG Feng1,2, LIANG Rilang1
, YAN Yan1
, LIANG Zeen1
, HUANG Zhenggang1
, LIU Pengfei1,2</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202208003&flag=1]]></guid><cfi:id>46</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Comprehensive Trait Evaluation of Five Different Flue-curedTobacco Genotypes in Ji’an Tobacco Production Area of Jiangxi]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202208004&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was carried out to screen new varieties (lines) of flue-cured tobacco with high 
quality adapted to ecological conditions in Ji’an tobacco production area.【Method】Five flue-cured tobacco varieties (lines) 
including CC400, PVH2233, PVH2343, 1604 and Xiangyan 7 were introduced from the imported varieties and domestic 
self-bred varieties, and the main conventional varieties Yunyan 87 and K326 were used as control varieties. A community 
comparative trial was conducted for two consecutive years from 2019 to 2020. The growth period, agronomic traits, disease 
resistance, economic characters, appearance quality, chemical composition and sensory quality of each variety (line) were analyzed.【Result】The Xiangyan 7,which showed a good balance between quality and benefit, had better color and oil content. 
The output and yield of Xiangyan 7 were higher than those of Yunyan 87 by 305.85 kg/hm2 and 4 837.95 Yuan/hm2
 respectively. 
The sensory quality was obviously better than the main variety Yunyan 87. However, attention should be paid to the prevention 
and control of common mosaic disease in field at early stage. The PVH2233 with good interannual stability and medium sensory 
quality had 3-4 pieces of leaves more than the control, and the vigorous growing period was 5-7 days longer than that of the 
control. It was necessary to strengthen the researches on supporting cultivation techniques. The 1604 had the advantages of early 
growth and rapid development, largest pitch and lumbar leaf area, better appearance quality and economic character, and better 
sensory quality than Yunyan 87. The CC400 was similar to K326 in field growth and had better leaf opening, but the occurrence 
of bacterial wilt was relatively severe and the economic character was not prominent. The PVH2343 had thicker leaves, but the 
incidence of climatic spot disease was more severe, and the sensory quality was slightly poor.【Conclusion】The comprehensive 
performance of Xiangyan 7, PVH2233 and 1604 was better, which could be further verified by expanding the planting area.]]></description>
<pubDate>2022/10/9 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[DING Yongliang1
, CHEN Renxiao1
, HE Kuanxin1
, ZHANG Qiming2,
LI Hongxia3
, XIA Hao3
, CHEN Jiayu3
, YUAN Jumin1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>DING Yongliang1
, CHEN Renxiao1
, HE Kuanxin1
, ZHANG Qiming2,
LI Hongxia3
, XIA Hao3
, CHEN Jiayu3
, YUAN Jumin1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202208004&flag=1]]></guid><cfi:id>45</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Efficient Rice Breeding in South China—From Early-late Season Double-cropping Rice Breeding to Variety-restorer Line Rice Breeding]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202207001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The breeding of early-late season double-cropping rice and variety-restorer line rice with high efficiency 
in South China were reviewed. Early-late season double-cropping rice breeding has achieved remarkable results, and has 
even affected breeding and production mode of rice. The breeding of variety-restorer line rice succeeded and expanded that 
of early-late season double-cropping rice. Outstanding achievement was made in variety-restorer line rice breeding, and 
several varieties such as Huanghuazhan, Huanglizhan, Huangguangyouzhan, Huangyuesimiao, Wushanyouzhan(Huazhan), 
Wushansimikao with great impact played an important role in rice production in South China. Among them, Huanghuazhan 
has been registered in 8 provinces such as Guangdong, Hunan, Hubei, and it was the indica variety with largest promotion 
area in China per year. A total of 142 combinations from Huazhan has been registered at different levels for 252 times, and it was top 1 restorer line in combination amount. Wushansimiao has been registered in 4 provinces such as Guangdong and 
Shaanxi. A total of 47 combinations from Wushansimniao has been registered at different levels for 88 times. Taking twoline hybrid combinations such as“Jingliangyou 534”and“Longliangyouhuazhan”as example, the study put forward and 
advocated strategies for rice breeding: restorer lines would be cultivated in South China and the sterile lines would be developed 
in different ecological regions, hybrid combinations with strong advantage could be bred to form an overall layout with win-win 
cooperation, coordinated development, efficiency and complementation.]]></description>
<pubDate>2022/9/5 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[LI Hong, ZHOU Shaochuan, 
　HUANG Daoqiang, WANG Chongrong,WANG Zhidong, CHEN Yibo, ZHAO Lei, GONG Rong, PAN Yangyang]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LI Hong, ZHOU Shaochuan, 
　HUANG Daoqiang, WANG Chongrong,WANG Zhidong, CHEN Yibo, ZHAO Lei, GONG Rong, PAN Yangyang</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202207001&flag=1]]></guid><cfi:id>44</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Analysis on Combining Ability of Yield and QualityCharacters of 13 Foundation Parents of Brassica napus]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202207002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was carried out to improve the selection efficiency of dominant combinations of 
yield and quality characters in Brassica napus, and to provide a basis for the utilization of heterosis of rape resources in 
Tibet.【Method】13 inbred lines of B. napus were used as parents and 40 hybrid combinations were combined according 
to incomplete diallel cross design. With 3 quality traits and yield per plant as research objects the combining ability and 
heritability of each parent were analyzed.【Result】The general combining ability 5 male parents ranked as: Xiwang 759 
> Xiangyou 420 = Jinghua 165 > Yumiao 10 >Dadi 95, while that of 8 female parents ranked as: 04306-2 > 127025-3 = 
158106-2 = 158112-3 > 08014-2 > 68-3 = Nianhe 18 > 06034-3. The combination with the best special combining ability 
for yield per plant was Jinghua 165×Nianhe 18 (28.8798). The combinations of Jinghua 165×Nianhe 18 and Xiangyou 
420×158112-3 had the potential of high yield and high quality. And the combinations of Yumiao 10×68-3, Yumiao 
10×127025-3, Xiangyou 420×06034-3, with SCA values of 28.8316, 25.3975 and 22.4819 respectively, had yield advantage. The broad heritability of oleic acid content was the highest, up to 96.93%; while yield per plant was the lowest, only 
56.09%.【Conclusion】The two foundation parents Xiwang 759 and 04306-2 with the optimal general combination ability 
could be mainly used in the selection of hybrid combinations of B. napus. In the process of breeding, the three quality traits 
of oil content, protein content and oleic acid could be selected early, while the trait of yield per plant was not suitable for early 
selection.]]></description>
<pubDate>2022/9/5 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[LI Shimeng, YANG Guanghuan, Nimaciren, WANG Jinxiong]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LI Shimeng, YANG Guanghuan, Nimaciren, WANG Jinxiong</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202207002&flag=1]]></guid><cfi:id>43</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effects of Different Planting Densities onPhotosynthetic Characteristics, Yield andQuality of Centella asiatica (L.) Urban]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202207003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was carried out to investigate the effects of different planting densities on the 
photosynthetic characteristics, yield and quality of Centella asiatica (L.) Urban, which will provide a theoretical basis for the 
improvement of yield and quality during artificial cultivation.【Method】Five different planting densities, including 30 000, 
60 000 , 120 000 , 160 000 , and 250 000 plants/hm2
, were set in greenhouse by using single factor randomized block design. 
The Li-6400 portable photosynthesis measure system was used to determine the photosynthetic characteristics in leaves and the 
content of asiaticoside and madecassoside in herbs was determined by HPLC.【Result】The planting density had no significant 
effects on branching number, dry weight per plant, stem diameter, leaf thickness, petiole length, leaf length and width of C 
asiatica (L.) Urban seedlings among in five different densities. The chlorophyll content, net photosynthetic rate (Pn), stomatal 
conductance (Gs), intercellular CO2
 concentration (Ci), and transpiration rate (Tr) increased gradually and then decreased 
with the increase of density. Although the highest Pn 〔(15.241 μmol CO2
/(m2
·s) ﹞ was appeared at the density of 120 000 
plants/hm2
, there was no significant difference between 60 000 and 120 000 plants/hm2
. The highest chlorophyll a, chlorophyll 
b, chlorophyll total content, Gs, Ci, and Tr were all appeared under the 60 000 plants/hm2
, which was significantly higher than 
those of other treatments. With the increase of density, the fresh yield, the dry yield, and the drying rate showed a trend of 
first increasing and then decreasing, which were the highest (21.437 t/hm2
, 4.196 t/hm2
, and 19.599%, respectively) when the 
density was 60 000 plants/hm2
. At the density of 60 000 plants/hm2
, all the fresh yield, the dry yield, and the drying rate were 
significantly higher than those of other treatments. The total contents of asiaticoside and madecassoside ranged from 1.95% 
to 2.78% among different densities, which were exceeded the requirement of Chinese Pharmacopoeia Version 2020 (0.8%). 
The contents of asiaticoside and madecassoside also showed a trend of first increasing and then decreasing as the increase of 
density, and the total contents of asiaticoside and madecassoside were the highest (2.73%) when the density was 60 000 plants/
hm2
. Correlation analysis results showed that there was a significantly positive correlation between fresh yield and Tr, and a 
significantly positive correlation were also appeared among dry yield and Tr, Gs as well as total chlorophyll.【Conclusion】
Planting density of 60 000 plants/hm2
 was the most appropriate for C. asiatica in greenhouse. Reasonably dense planting could 
effectively increase the photosynthetic characteristics, increase photosynthetic efficiency, and improve the yield and quality of 
medicinal plants.]]></description>
<pubDate>2022/9/5 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[YAO Shaochang, MING Ruhong, FU Peng, PAN Dongjin, JIANG Xiangjun, LI Liangbo, HUANG Rongshao]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>YAO Shaochang, MING Ruhong, FU Peng, PAN Dongjin, JIANG Xiangjun, LI Liangbo, HUANG Rongshao</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202207003&flag=1]]></guid><cfi:id>42</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Establishment of In Vitro RegenerationSystem for Murraya paniculata]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202207004&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The natural propagation mode for Murraya paniculata is sowing, which can not meet the 
needs of extensive production of plantlets. The establishment of efficient in vitro regeneration system lays a foundation 
for industrialized breeding of tissue culture seedlings for M. paniculata.【Method】Mature seeds of M. paniculata were 
used as explants to study the effects of different concentrations and ratios of hormone and different organic matters on seed 
germination, proliferation, strong seedling culture and rooting culture of M. paniculata. Then, sterile tissue culture seedlings 
were obtained for transplanting.【Result】After the pretreatment with 75% alcohol and 0.1% HgCl2
, the most suitable 
medium for seeds germination is MS+6-BA 0.5 mg/L, and the germination rate is 62.50%; the most appropriate basic 
medium for subculture proliferation of cluster buds is the MS medium; the most suitable medium for multiplication culture is MS + 6-BA 0.50 mg/L + NAA 0.15 mg/L, and the multiplication coefficient is up to 2.37; the suitable medium for strong 
seedling culture is MS + potato juice 30 g/L, and the plant height increase to 2.0 cm in 40 days; the optimal medium for rooting 
culture is 1/2MS + IBA 0.6 mg/L + potato juice 30 g/L+ banana juice 30 g/L + AC 0.1 mg/L, and the rooting rate is 55.6%. 
The survival rate of the rooting seedlings is 85% after domesticated and transplanted into the mixed matrix (peat soil: loess:
perlite: fertilizer of calcium, magnesium and phosphate, 3∶2∶1∶0.2).【Conclusion】Different hormones and concentrations have 
significant effects on seed germination and cluster bud proliferation. Adding potato juice and banana juice are beneficial to the 
growth of plantlets and rooting.]]></description>
<pubDate>2022/9/5 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[LUO Yi, YANG Ganlin，TAN Jiana，CHEN Yuegui，LUO Jianpiao，YANG Junxian]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LUO Yi, YANG Ganlin，TAN Jiana，CHEN Yuegui，LUO Jianpiao，YANG Junxian</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202207004&flag=1]]></guid><cfi:id>41</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effects of Different Planting Patterns on Rice Growth and
Selection of Rice Varieties Suitable for Direct Seeding]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202206001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】Rice seedling transplanting and direct seeding are the most widely used planting methods in 
Guangdong currently. Exploring the effects of seedling transplanting and direct seeding on rice yield and screening the rice 
varieties suitable for flooding direct seeding in Guangdong and South China can provide theoretical basis for variety selection 
and breeding application of direct seeding rice in Guangdong and South China.【Method】Twenty-five rice varieties from 
Guangdong Province were used as materials to simulate submergence tolerance tests, the growth period, plant height, lodging 
resistance and yield were measured under two different cultivation modes of seedling transplanting and direct seeding in 
early and late seasons, and the rice varieties suitable for direct seeding were screened.【Result】The seedling rate of 12 rice 
varieties, such as Yuexinyinzhan 2, Yuenongsimiao and Yuetaiyouzhan with submergence tolerance reached more than 80%. It was found that the growth period of direct seeding rice was 7-15 d shorter than that of seedling transplanting by analyzing the 
two cultivation modes of seedling transplanting and direct seeding in early and late seasons. As it showed in the field lodgingresistance phenotype identification, 11 rice varieties had stronger lodging resistance. Yield analysis showed that the yields of 
direct seeding in early and late seasons were higher than those of seedling transplanting, with an average increase of 0.99 % 
and 1.25 %, respectively.【Conclusion】Based on the submergence tolerance, lodging resistance and high yield of the tested 
varieties, 4 varieties including Yuenongsimiao, Yumeizhan, Wushansimiao and Yuteyouzhan were selected to be suitable for 
direct seeding cultivation pattern in South China.]]></description>
<pubDate>2022/8/9 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[FANG Zhiqiang,
　LU Zhanhua, WANG Shiguang, LIU Wei, LU Dongbai, WANG Xiaofei, WU Haoxiang, CHEN Hao, HE Xiuying]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>FANG Zhiqiang,
　LU Zhanhua, WANG Shiguang, LIU Wei, LU Dongbai, WANG Xiaofei, WU Haoxiang, CHEN Hao, HE Xiuying</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202206001&flag=1]]></guid><cfi:id>40</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Investigation and Analysis of Comprehensive Agronomic
Traits of New Peanut Varieties in Guangzhou]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202206002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】New peanut varieties suitable for planting in Guangzhou were screened out to carry out fur 
tests in different planting areas within the province, which would provide a certain theoretical basis and reference for the 
large-scale promotion and application of the new varieties in the province.【Method】Taking Zhanyou 75 as a control, 11 
new peanut varieties including Shanyou 121, Yueyou 905 and Fuhua 0945 were preliminarily tested at the Zhongluotan 
Peanut Test Base of Guangdong Academy of Agricultural Sciences in 2020. Then, the yield, adaptability and comprehensive agronomic traits of different peanut varieties were identified, and the characteristics and application value of these varieties 
were evaluated objectively.【Result】All the tested varieties had moderate or higher resistance to waterlogging, drought and 
lodging; the coefficient of variation of economic traits was between 0.66% and 51.75%. There was a very significant positive 
correlation between main stem height and branch length, total number of branches and number of fruiting branches, number of 
green leaves on the main stem at harvest, total number of fruits per plant, 100-fruit mass, 100-kernel mass and yield, and there 
was a very significant negative correlation between the number of green leaves on the main stem at harvest and the yield. Yield 
significance analysis showed that, compared with the control, the dry pod yields of Shanyou 121, Yueyou 905 and Fuhua 0945 
increased by 5.57%, 1.70%, and 1.13%, respectively, and the variety differences didn’t reach a significant level. The rest of 
the varieties all decreased in yield, among which the yield reduction rates of Qianyoufense and Qionghua 1104 were 32.47% and 
38.92%, respectively, and the differences reached significant and extremely significant levels. Yield stability analysis showed 
that, compared with the control, the yield stability of Shanyou 121, Yueyou 905 and Guihua 66 was better, while that of Zhanyou 
103, Quanhua 1417 and Qionghua 1104 was poor.【Conclusion】Combining the agronomic traits, biological characteristics 
and quality of all the tested peanut varieties, the two new varieties, Shanyou 121 and Yueyou 905, showed better comprehensive 
agronomic traits in Guangzhou, and could be tested in other areas of Guangdong Province for the screening of varieties suitable 
for large-scale promotion and application.]]></description>
<pubDate>2022/8/9 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[XU Yangyu,
　QIAN Zhaojun, LIU Hao, HONG Yanbin, LIANG Xuanqiang, CHEN Xiaoping, LU Qing, LI Shaoxiong]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>XU Yangyu,
　QIAN Zhaojun, LIU Hao, HONG Yanbin, LIANG Xuanqiang, CHEN Xiaoping, LU Qing, LI Shaoxiong</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202206002&flag=1]]></guid><cfi:id>39</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Development and Utilization of TRAP Molecular Markers
on Medicinal Plant Magnolia offi cinalis]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202206003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was carried out to develop new molecular markers and analyze the molecular 
phylogeny of Magnolia officinalis in Longshan Tree Farm, Lechang, Guangdong, with a view to facilitating subsequent 
researches on the selection of excellent plants and breeding of superior varieties.【Method】Fourteen Magnolia offi cinalis 
(provenances from Jiangxi Province) individual plants collected from Longshan Tree Farm were used as tested materials. By 
using Primer BLAST on NCBI (https://www.ncbi.nlm.nih.gov), fixed primers of TRAP molecular markers were designed based 
on the sequences of M. offi cinalis cDNA in the GenBank. The fixed primers were matched with random primers (sequence 
related amplified polymorphism) to amplify genomic DNA and develop TRAP molecular markers. The electrophoretogram of 
TRAP markers and amplified products of M. offi cinalis SSR (Simple Sequence Repeat) were counted. Then, NTSYSpc2.10e 
was used for cluster analysis to discover the genetic diversity and phylogeny of fourteen M. offi cinalis resources.【Result】
Seven TRAP molecular markers showing good polymorphism and clear electrophoresis bands were successfully developed 
from seventy primer pairs formed by fourteen fixed primers and five random primers. The phylogenetic tree of M. offi cinalis plants was constructed. The genetic similarity coefficient of these M.offi cinalis plants was 0.75-0.88 and it was not the highest 
between mother plant and its offspring.【Conclusion】M. officinalis was rich in genetic diversity and gene exchange was 
frequent in M. offi cinalis population. The newly developed TRAP molecular markers will facilitate identification of superior 
plants, breeding of excellent varieties and marker-assisted selection of M. offi cinalis in the future.]]></description>
<pubDate>2022/8/9 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[LI Luoye，DENG Miao，HUANG Shaobin，LI Xi，YANG Tongtong，KE Biying]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LI Luoye，DENG Miao，HUANG Shaobin，LI Xi，YANG Tongtong，KE Biying</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202206003&flag=1]]></guid><cfi:id>38</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Analysis on the Nutritional Components of
Different Varieties of Longan Flowers]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202206004&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】Exploring the nutritional components of longan flowers and comparing the nutritional 
components of different varieties of longan flowers will provide basis for further processing and comprehensive utilization 
of longan flowers.【Method】The contents of soluble protein, soluble sugar and vitamin C in female and male flowers of 
21 different longan varieties were determined by coomassie brilliant blue staining, anthrone-sulfuric acid method and 2, 
4-dinitrophenylhydrazine colorimetric method respectively. The nutritional components in female and male flowers of 21 different longan varieties were evaluated comprehensively by principal component analysis and classified by clustering 
methodology.【Result】The contents of soluble protein, soluble sugar and vitamin C in male flowers were higher than those 
in female flowers. The average values of the three nutrients in male flowers were 14.02 mg/g, 191.23 mg/g and 5.29 mg/g 
respectively, while those in female flowers were 12.54 mg/g, 167.25 mg/g and 5.21 mg/g respectively. Among the 21 tested 
varieties, Shixia, Hongke, Shuangmamu, Shuiyan, Conghuadageyuan, Jiluanyan and Honghe showed higher level in all three 
nutrients. Three principal components were extracted, and their cumulative contribution rate reached 78.56%, reflecting the 
comprehensive nutritional quality of 21 longan varieties. Different results were obtained by clustering with different nutritional 
components and the 21 varieties could be divided into 3 categories when the threshold value was 5.【Conclusion】Longan 
flowers have high soluble sugar content, mainly concentrated in 100-250 mg/g, while soluble protein and vitamin C content 
mainly concentrated in 10-20 mg/g and 2-10 mg/g, respectively. Longan flowers are rich in nutritional components, which can 
be used as functional food or raw materials for medicinal development.]]></description>
<pubDate>2022/8/9 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[HUANG Shilian, FENG Jianping, HAN Dongmei, GUO Dongliang, LYU Xinmin, LI Jianguang]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>HUANG Shilian, FENG Jianping, HAN Dongmei, GUO Dongliang, LYU Xinmin, LI Jianguang</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202206004&flag=1]]></guid><cfi:id>37</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Research Advances on Cytoplasmic Male Sterility and Restorer Genes in Maize]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202205001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[As an important food and forage crops in China, corn plays a key role in guaranteeing food security, 
promoting social and economic development and providing industrial energy. Cytoplasmic male sterility (CMS) is a common 
biological phenomenon in higher plants. CMS of maize can be divided into three types: T type, C type and S type. Sterility 
genes are derived from mitochondrial gene rearrangement to form chimeric genes. The newly formed chimeric genes harm 
the development of anther microspores and lead to abortion. The existence of restorer gene can eliminate the harm of sterility 
gene and make microspore grow normally. Since the sterility genes are mitochondrial genes and the restorer genes are 
nuclear genes, the study on the mechanism of cytoplasmic sterility and restorer is also a bridge to explore the relationship 
between cytoplasmic and nuclear interactions. At the same time, the utilization of male sterile lines is an important 
technical means for maize to utilize heterosis. The utilization of cytoplasmic male sterile lines in maize production is of great 
significance to the utilization of crop heterosis and seed production of hybrid seeds. It can not only liberate labor force and 
reduce seed production cost, but also improve seed production purity and increase yield. In this paper, the classification and 
characteristics of CMS in maize as well as the CMS genes and fertility restorer genes discovered in maize in recent years were summarized, and the problems and development prospects in the application of CMS in maize were discussed, which could 
provide references for the promotion and utilization of CMS in production.]]></description>
<pubDate>2022/7/11 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[ZHANG Huaisheng, ZHANG Xiaoxiang, WANG Pingxi, JIN Xining, WU Xiangyuan]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHANG Huaisheng, ZHANG Xiaoxiang, WANG Pingxi, JIN Xining, WU Xiangyuan</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202205001&flag=1]]></guid><cfi:id>36</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Establishment of Tissue Culture and Rapid PropagationSystem for Paris polyphylla var. chinensis]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202205002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was conducted to establish a tissue culture and rapid propagation system for 
Paris polyphylla var. chinensis.【Method】The seedlings of P. polyphylla var. chinensis were selected as materials 
in this experiment. Different pretreatment and sterilization method for explants were studied. And the optimum 
explants, the suitable medium for adventitious buds induction, propagation, rooting and bulb setting were also screened.
【Result】The contamination rate reached the lowest (1.67%) and the new buds grew best after the explants was dipped 
into 0.5% carbendazim for 2 h and then dipped into 75% ethanol for 45 s, and 0.1% HgCl2
 for 10 min. The best medium 
for adventitious buds induction was WPM+2.0 mg/L ZT+0.1 mg/L NAA+30 g/L sucrose, the induction rate reached up to 98.33% and new buds grew fast and well when the seedlings or the seedlings without leaves and stems were selected as explants, 
which were 5-10 cm high with roots. The optimal medium for adventitious buds propagation was MS + 2.0 mg/L 6-BA+1.0 
mg/L IAA+30 g/L sucrose and the propagation coefficient reached 3.75 times after being cultured for 90 d. While the optimal 
medium for adventitious buds rooting and bulb culture was WPM+2.0 mg/L ZT+0.1 mg/L NAA+30 g/L sucrose, the rooting and 
bulb setting rate reached 96.67%, the root number was 3.84, the root length was 4.15 cm and the bulb diameter was 0.86 cm. 
The best medium for transplanting and domestication of seedlings was peat soil ∶ perlite ∶ river sand = 2 ∶ 1 ∶ 1 on March 
to April and the survival rate reached 30%.【Conclusion】A tissue culture and rapid propagation system for P. polyphylla
var. chinensis seedlings was established, which laid a foundation for resource conservation and mass production of seedlings of 
P. polyphylla var. chinensis.]]></description>
<pubDate>2022/7/11 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[WU Qiaofen, XIA Ke, ZHAO Zhiguo, MA Xiaoya, QIU Shuo]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>WU Qiaofen, XIA Ke, ZHAO Zhiguo, MA Xiaoya, QIU Shuo</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202205002&flag=1]]></guid><cfi:id>35</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effects of Acid Rain on Germinationand Seedling Growth of Rice]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202204001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】Acid rain affects the growth and development of crops. Exploration of effects of acid rain 
on physiological indexes of rice seedlings at the stages of germination and tillering can provide theoretical references for 
rice planting in those regions covered by acid rain.【Method】An laboratory experiment was conducted to investigate 
physiological indexes of rice germination and growth under stimulated acid rain (SAR) stresses, with the treatments 
including pH 3.5, pH 4.0, pH 4.5, pH 5.0 and the control (CK) being pH 6.0.【Result】After incubation for seven days, the 
germination rate of rice seeds decreased with the pH decrease of SAR, but the differences were not statistically significant 
among treatments. Under low stress of SAR with pH 4.5 and pH 5.0, there were no significant difference in either germination 
index or seedling length between treated and CK groups. The seedling length at pH 5.0 was 6.82 (±0.17) cm, a value being 
slightly higher than that under CK (6.78 cm± 0.13cm). Under high stress of SAR of pH 3.5 and pH 4.0, the germination index, vigor index and seedling length of rice were significantly lower than those in CK group. The plant height, root length and 
chlorophyll content of rice leaves increased first and then decreased during the range of pH 3.5-6.0 of SAR. Some physiological 
indexes were promoted under weak acid treatment relative to the CK group. Especially, under the SAR treatments of pH 4.5 and 
pH 5.0, the plant height was 23.54 (±0.97) cm and 24.44 (±0.57) cm, respectively, significantly higher than that in CK group
 (21.54 cm±1.8 cm). The chlorophyll content was 26.13 (±1.07) SPAD and 27.13 (±0.63) SPAD under the SAR treatments of 
pH 4.5 and pH 5.0, and that was significantly higher than that in CK group (23.91±2.00 SPAD). Moreover, the root length was 
6.56 (±0.26) cm at the SAR treatment of pH 4.5, which was slightly higher than in CK group (6.50 cm±0.42 cm). In contrast, 
high stress of the SAR treatments significantly impressed the physiological and growth indexes of rice, which indicated that 
acid rain may exhibit low promoting and high inhibiting effect on rice growth.【Conclusion】High acid rain stress inhibited the 
germination and growth of rice, while low concentration acid rain had a certain stimulating effect.]]></description>
<pubDate>2022/6/6 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[LIN Miaojun, LIN Mindan, XU Zhanying, FENG Tingshi, CHEN Xiaomei]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LIN Miaojun, LIN Mindan, XU Zhanying, FENG Tingshi, CHEN Xiaomei</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202204001&flag=1]]></guid><cfi:id>34</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Advances in Lodging Resistance of Rice Since the“Green Revolution”]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202203001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Rice is one of the food crops with the largest planting area and the highest total output in China, which plays 
an important role in ensuring national food security. Since the “Green Revolution”, China’s rice yield per unit area has been 
greatly improved. However, the lodging problem of rice has long restricted the high and stable yield and excellent quality of 
rice. A large area of lodging of rice will lead to serious yield loss and rice quality decline. At present, with the continuous 
improvement of rice yield per unit area, the problem of rice lodging is becoming increasingly prominent, which has been one 
of the great hidden dangers threatening the normal rice production. Through decades of continuous research, researchers at 
home and abroad have made great progress in the cause, mechanism, influencing factors, evaluation methods and lodging 
resistance genetics and breeding of rice. The study summarizes the research progress of rice lodging resistance since the “Green Revolution”, combined with the lodging resistance research work experience for many years, comprehensive analyzes the 
research the origin of rice lodging resistance, clarifies the properties of rice lodging, summarizes the main related factors of rice 
lodging resistance, and puts forward the relevant countermeasures to raise the capacity of rice lodging resistance. On the basis of 
the existing research, the main directions of rice lodging resistance breeding, cultivation and molecular mechanism research in 
the new era are prospected in order to provide references for rice lodging resistance researchers.]]></description>
<pubDate>2022/5/7 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[WANG Xiaofei, 
LU Zhanhua, LIU Wei, LU Dongbai, WANG Shiguang, WU Haoxiang, FANG Zhiqiang, HE Xiuying]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>WANG Xiaofei, 
LU Zhanhua, LIU Wei, LU Dongbai, WANG Shiguang, WU Haoxiang, FANG Zhiqiang, HE Xiuying</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202203001&flag=1]]></guid><cfi:id>33</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effects of Nitrogen Application Rate and TransplantingDensity on Dry Matter Production and Nitrogen UseEfficiency of Double Cropping Hybrid Rice]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202203002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was carried out to study the effects of nitrogen application rate and transplanting 
density on dry matter production and nitrogen use efficiency of double cropping hybrid rice.【Method】Zhuliangyou 819 
was used as early rice material and Taiyou 398 was used as late rice material. Three nitrogen application levels (N1,N2,N3 
at 0, 120,150 kg/hm2
 for early rice and N1,N2,N3 at 0, 150 and 225 kg/hm2
 for late rice,respectively) and three transplanting densities (M1, M2, M3 at 13.3 cm×16.7 cm, 13.3 cm×20.0 cm, 16.7 cm×20.0 cm for early rice and M1, M2, M3 at 16.7 cm×20 cm, 16.7 
cm×23.3 cm, 16.7cm×26.7cm for late rice, respectively).【Result】Increasing nitrogen fertilizer can significantly improve the 
accumulation of dry matter quality of rice, and the effect of transplanting density on dry matter quality is small. The dry matter 
quality of early and late rice is the highest in N3M1 treatment at maturity, in which the dry matter quality of early rice is 8.81%-
110.24% higher than that of other treatments, and that of late rice is 9.12%-117.12% higher than that of other treatments. The 
nitrogen uptake and utilization efficiency of early rice N2M2 treatment was up to 60.73%, and that of late rice N2M3 treatment 
was up to 63.20%. Increasing nitrogen fertilizer could not significantly improve the contribution rate to yield, and had little effect 
on the harvest index of late rice; Increasing nitrogen fertilizer application in early and late rice could significantly increase the 
total nitrogen accumulation of rice, with an increase of 67.50%-77.03% in early rice and 73.18%-115.12% in late rice; Each 
fertilization treatment of early rice had little effect on the agronomic and physiological utilization efficiency of nitrogen fertilizer. 
The increase of agronomic and physiological utilization efficiency of nitrogen reduction treatment of late rice was 52.66% and 
59.00%; Nitrogen reduction in early and late rice can improve the partial fertilizer productivity of rice, and the growth rates of 
early and late rice are 15.54% and 48.58% respectively. The contribution rates of transplanting density to the yield of early 
and late rice were 18.52%-47.22% and 23.42%-35.42% higher in M3 treatment than in M1 and M2 treatment, respectively; It 
had little effect on total nitrogen accumulation, harvest index, agronomic utilization rate and partial fertilizer productivity; Low 
planting density can improve the physiological utilization rate of early rice, with an increase of 52.19%-144.14%, but it has 
little effect on the physiological utilization rate of late rice.【Conclusion】Therefore, N2M2 and N3M3 treatment can maintain 
high nitrogen use efficiency and dry matter accumulation of double cropping hybrid rice, and N2M2 treatment can save fertilizer 
and maintain high nitrogen use ability.]]></description>
<pubDate>2022/5/7 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[SHI Ailong, ZHU Haijun, WEN Can, WEN Tian, WANG Xuehua]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>SHI Ailong, ZHU Haijun, WEN Can, WEN Tian, WANG Xuehua</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202203002&flag=1]]></guid><cfi:id>32</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Screening of Candidate Genes Resistant to Drought Stressin Wheat Leaves Based on Transcriptome Sequencing]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202202001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was carried out to identify key genes in response to drought stress in wheat 
through transcriptome sequencing. 【Method】By using Illumina HiSeq 2500 sequencing platform, sequencing was 
employed to Zhengmai 366 exposed to the control and natural drought stress, and the sequencing data were analyzed.
【Result】45 471 018 and 45 133 470 clean reads were obtained from the two sets of samples, containing 6.82 Gb 
and 6.39 Gb base information, respectively. After splicing and assembly, 188 334 transcripts and 119 588 Unigenes 
were obtained. A total of 1 207 DEGs were screened, of which 752 were up-regulated and 455 were down-regulated. 
GO functional enrichment analysis showed that the up-regulated DEGs were mainly enriched in hydrolase activity, 
catalytic activity, metabolic process, glycerol metabolism, membrane and cell parts, etc.; however, down-regulated 
DEGs were mostly enriched in organelles, cells and oxidoreductase activities. KEGG pathway enrichment analysis 
showed that DEGs were significantly enriched in starch and sucrose metabolism, porphyrin and chlorophyll 
metabolism, photosynthesis-antenna protein, photosynthesis, phenylpropane biosynthesis, glyoxylic acid and 
dicarboxylic acid metabolism, glycerophospholipid metabolism, amino acid metabolism and carbon f ixation in photosynthetic organisms. The qRT-PCR results of 5 antioxidant enzyme genes were consistent with RNA-Seq 
sequencing results.【Conclusion】A large number of wheat drought-resistant genes are obtained by transcriptome 
sequencing technology, which provides more genetic resources for further study of the molecular mechanism of wheat 
response to drought stress.]]></description>
<pubDate>2022/3/29 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[ZENG Qianqian, LIU Yan, ZHU Mo, QIU Zongbo]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZENG Qianqian, LIU Yan, ZHU Mo, QIU Zongbo</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202202001&flag=1]]></guid><cfi:id>31</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Molecular Identification and Analysis of New Cultivar WuzhiNo. 2 Based on Ribosomal DNA ITS and ITS2 Sequence]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202202002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study was carried out to explore the molecular identification of Wuzhi No. 2 (original 
name: Zizhi S2), a new cultivar of Ganoderma sp., by rDNA-ITS sequence analysis and ITS2 secondary structure model.
【Method】The sequences of Wuzhi No. 2 were acquired by the first and third generation sequencing techniques 
respectively, and the phylogenetic tree was constructed based on ITS sequences of related species of genus Ganoderma for 
molecular classification and identification, the rDNA-ITS and related primer sequences were aligned by BLAST with the 
whole genome, and the secondary structure of ITS2 was predicted online.【Result】Sanger sequencing showed that the ITS sequence of Ganoderma sp. strain Wuzhi No. 2 (GenBank: MG282563.1, 649 bp) displayed high similarity (99.53% -100%) 
with five known Ganoderma sinense strains in the GenBank, while Wuzhi No. 2 and four known strains or voucher specimens 
of G. sinense (strain) were clustered into a same branch on the Ganoderma spp. phylogenetic tree. Two known short sequences 
of specific primers (GS_22bp and GS2_22bp) appeared in the forward position of 119-140 bp and the reverse position of 588-
567 bp of ITS sequence of Wuzhi No. 2, respectively. Four tandem repeat ITS regions were found from the rDNA on Scaffold 
No. 49 of Wuzhi No. 2 genome, which was highly consistent with the single ITS sequence by Sanger method. In terms of the 
secondary structure of ITS2 sequence, three helix regions in Wuzhi No. 2 and Ganoderma sinense were the same, but only the 
included angle in Helix IV region was different.【Conclusion】Based on ITS/ITS2 molecular identification, it was confirmed 
that the new cultivar Wuzhi No. 2 and the known strains of Ganoderma sinense belonged to the same population, there were 
angle differences in the Helix IV region of secondary structure of ITS2, and the effectiveness of two known specific amplification 
primers were also verified.]]></description>
<pubDate>2022/3/29 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[ZHONG Liyi, YING Zhenghe, LIU Xinrui, CHEN Tiqiang]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHONG Liyi, YING Zhenghe, LIU Xinrui, CHEN Tiqiang</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202202002&flag=1]]></guid><cfi:id>30</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Genetic Basis of Direct Seeding Adaptability in Rice and its Breeding Strategy]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202201001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Rice is one of the most important food crops in the world. With the decrease of rural labor force and the 
rapid increase of labor cost, rice production is shifting from transplanting to direct seeding. Despite the multiple advantages 
over transplanting, high production risk still exists in direct seeding rice and the yield is not high and unstable due to lack 
of direct-seeding varieties. There are three crucial problems in the production of rice direct seeding, such as poor seedling 
establishment, severe weed infestation and being susceptible to lodging. It is urgent to develop direct-seeding varieties 
which have the traits of tolerance to anaerobic germination and low temperature germination, strong early vigor, herbicide 
resistance and lodging resistance. Many QTL or genes have been identified for the traits of anaerobic germination tolerance, 
low temperature germination tolerance, herbicide resistance and lodging resistance. Some genes such as OsTPP7, OsCBL10,qLTG3-1, HIS1 and SCM2 have been successfully cloned, providing important gene resources for molecular breeding. In this 
review, based on the traits related to direct seeding adaptability, such as anaerobic germination tolerance, low temperature 
germination tolerance, herbicide resistance and lodging resistance, the rice genetic basis of direct seeding adaptability and the 
utilization status of the key genes controlling direct seeding adaptability and related genes were summarized. It is suggested 
that the development of direct-seeding rice varieties need an integrated use of modern molecular breeding and conventional 
breeding methods to achieve rapid and efficient pyramiding of multiple genes/traits in direct-seeding varieties, with a view to 
guaranteeing a sustainable development of direct-seeding rice.]]></description>
<pubDate>2022/2/25 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[YAN Xiaoxia1,2, WANG Feng1, LIU Wuge1
, LIAO Yilong1
, 
ZHU Manshan1
, FU Chongyun1
, HUO Xing1
, LIU Dilin1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>YAN Xiaoxia1,2, WANG Feng1, LIU Wuge1
, LIAO Yilong1
, 
ZHU Manshan1
, FU Chongyun1
, HUO Xing1
, LIU Dilin1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202201001&flag=1]]></guid><cfi:id>29</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effects of Nitrate and Ammonium Nitrogen on the Accumulation and Distribution of Imidacloprid in Maize Seedlings]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202201002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【O bjective】The study is carried out to explore the accumulation and distribution law of 
imidacloprid in maize under different nitrogen supply conditions, which will provide a theory foundation for improving imidacloprid utilization rate and rational application of nitrogen fertilizer and imidacloprid.【Method】
T he seedlings of maize was exposed to imidacloprid in hydroponic solution with different nitrogen treatments 
(4 mmol/L NO3-
, 10 mmol/L NO3-
, 4 mmol/L NH4+
, 10 mmol/L NH4+
). The content of imidacloprid in maize was 
determined by HPLC.【Result】Leaf was the main part for imidacloprid accumulation in maize, followed by 
root and stem, and all nitrogen treatments showed similar accumulation law. The imidacloprid accumulation was 
closely related with nitrogen forms in maize under different imidacloprid concentrations. Under the treatments of 
3 imidaclo prid concentrations, the content of imidacloprid in the roots, stems and leaves of maize cultured with 
NO3-
 as the nitrogen source was significantly higher than that of maize cultured with NH4+
. For example, when 
the imidacloprid concentration was 2.5 mg/L, the contents of imidacloprid in roots of NO3-
 treatment were 3.09 
and 5.15 times those of NH4+
 treatment, respectively, 1.90 and 3.04 times those in stems, and 1.70 and 3.22 times 
those in leaves, respectively. When the imidacloprid concentration was 5.0 mg/L, the TFleaf/stem of imidacloprid in 
maize seedlings was the highest, and that of NO3-
 and NH4+
 treatments was 7.54, 5.07, 4.19 and 4.13 respectively, 
indicating that NO3-
 was more beneficial to imidacloprid transportation from stems to leaves. Compared with 
NO3-
 treatments, the TFleaf/stem of imidacloprid in maize seedlings of NH4+
 treatments was significantly lower, 
indicating that NO3-
 was more beneficial to imidacloprid transportation to leaves under 5.0 mg/L imidacloprid 
treatment.【Conclusion】The accumulation of imidacloprid in maize seedlings was correlated with addition 
dose of imidacloprid, the higher the concentration of imidacloprid in culture solution, and higher imidacloprid 
accumulation in maize. The accumulation of imidacloprid in maize seedlings was influenced by the nitrogen form, 
and NO3-
 is more beneficial to the accumulation of imidacloprid in maize.]]></description>
<pubDate>2022/2/25 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[HE Qin1,2, ZHANG Xingxing2
, LAI Jiantian1,2, SHAO Danqing1,3, 
ZHOU Yuming1
, SHEN Jianmei1
, LU Yinglin2
, AN Yuxing2]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>HE Qin1,2, ZHANG Xingxing2
, LAI Jiantian1,2, SHAO Danqing1,3, 
ZHOU Yuming1
, SHEN Jianmei1
, LU Yinglin2
, AN Yuxing2</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202201002&flag=1]]></guid><cfi:id>28</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Content Characteristics and Health Risk Assessment of Heavy Metals in Various Organs of Panax notoginseng]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202201003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study aimed to explore the content characteristics and transport rules of Cu, Cr, Cd and Pb 
in organs of Panax notoginseng from different producing areas, and to evaluate the safety of P. notoginseng root tubers to human 
health. 【Method】43 samples of P. notoginseng were collected from Nanxiong of Guangdong, Jingxi of Guangxi, Wenshan of 
Yunnan and New Extension area of Yunnan. The contents of Pb, Cd, Cr and Cu in stems and leaves, reed heads, tubers, tendons 
and fibrous roots of P. notoginseng were determined by ICP-MS.【Result】The contents of four heavy metal elements in 
stem, leaf, reed head and fibrous root ranked as follows: Cu > Cr > Pb > Cd; while those in tuber and tendon ranked as follows: Cr > Cu > Pb > Cd. Four heavy metals in the underground part of various organs of P. notoginseng were higher than those in the 
aboveground part, and the heavy metals were mostly concentrated in fibrous root of the underground part. According to the 2020 
Edition of Chinese Pharmacopoeia, there were excessive heavy metals in different organs of P. notoginseng to different degree, 
and the over-standard degree of heavy metal elements ranked as follows: Cr > Pb > Cd > Cu. The over-standard rate of each organ 
of Panax notoginseng was fibrous root > reed head > stem and leaf > tuber > tendon. The average transport capacity of four heavy 
metals from underground parts to stems and leaves was as follows: Pb > Cu > Cr > Cd. The intake risks of Cu, Cr, Cd and Pb in P. 
notoginseng roots from different origins to the human body were 0.37%, 46.69%, 3.80% and 5.23%, respectively. Among them, Cr 
element had higher health risks, therefore, the control of Cr intake risk should be strengthen.【Conclusion】The study results can 
provide a theoretical basis for the characteristics of heavy metal accumulation, health and safety evaluation and selection of suitable 
planting areas of P. notoginseng.]]></description>
<pubDate>2022/2/25 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[GUO Ting1
, HE Zhongjun1
, LI Dongxue1
, LI Xinyue1
, LIANG Shewang2
, 
XIONG Junfen1
, HONG Changqing1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>GUO Ting1
, HE Zhongjun1
, LI Dongxue1
, LI Xinyue1
, LIANG Shewang2
, 
XIONG Junfen1
, HONG Changqing1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202201003&flag=1]]></guid><cfi:id>27</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Analysis on Combining Ability of Main Agronomic Traits to 6 Shanhui Rice Restorer Lines]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202212001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The combining ability and heritability of main agronomic traits of 6 rice restorer lines were analyzed and their application value was evaluated.【Method】6 new rice restorer lines of Shanhui series and 5 three-line sterile lines were selected and 30 hybrid rice combinations were prepared according to the 6×5 incomplete diallel cross design. And combining ability and heritability of 8 main agronomic traits were analyzed.【Result】The contribution rate of GCA genotype variance of restorer line was higher than that of sterile line in yield per plant, plant height and effective panicle number, therefore, the phenotypes of yield per plant, plant height and effective panicle number of hybrid rice combinations were mainly determined by the inheritance of restorer line. Growth period, seed setting rate, panicle length and yield per plant showed lower contribution rate of GCA genotype variance (lower than 50%), therefore, the 4 traits would be mainly influenced by non-additive effect in breeding practice; 1000-grain weight, plant height, effective panicle number and total grain number showed higher contribution rate of GCA genotype variance (higher than 55%), therefore, they are mainly affected by additive effects of genes. The narrow heritability of 1000-grain weight and plant height was 80.99% and 76.03%, which showed good stability in offspring and could be selected in low generation in breeding practice. There was no obvious correlation between GCA and SCA. Both SR02 and SR04 were elite restorer lines. According to the parent utilization value classification method, SR02 would be easy to create large-grain and high-yield hybrid rice combinations in breeding practice, which showed as Class I parent in yield per plant and Class Ⅱ parent in seed setting rate and 1000-grain weight; SR04, showed as Class Ⅱ parent in yield per plant, effective panicle number, total grain number and seed setting rate, would be easy to create high-yield hybrid rice combinations with multiple panicles, and SR04 also showed the potential of lodging resistance. New hybrid rice combinations Tianfeng A × SR01, Jinheng A × SR06 and Jinheng A×SR03 showed the highest SCA value in per plant weight, which were 26.320, 26.049 and 20.723, respectively, and all of 3 combinations showed good utilization value.【Conclusion】In the practice of hybrid rice breeding, the selection of parents should not only pay attention to the selection of high GCA parents, but also strengthen the selection of SCA of combinations. At the same time, according to the genetic characteristics of the parents, the design of hybrid rice parental matching should follow the principle of "exploiting strengths and avoiding weaknesses, complementing traits".The inheritance of hybrid rice in yield per plant, plant height and effective panicle number are mainly affected by restorer line. SR02 and SR04 are elite restorer lines, which have good application value. New hybrid rice combinations Tianfeng A × SR01, Jinheng A × SR06 and Jinheng A × SR03 show high SCA value in yield characters, with good application prospects.]]></description>
<pubDate>2023/2/6 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[LI Zhongjin, XU Dai, XIE Peili, YAO Runmu, WANG Xin, LIAO Xuequn, ZHANG Jianlin, ZHANG Zejia]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LI Zhongjin, XU Dai, XIE Peili, YAO Runmu, WANG Xin, LIAO Xuequn, ZHANG Jianlin, ZHANG Zejia</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202212001&flag=1]]></guid><cfi:id>26</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Research Advance in the Regulatory Mechanism of Phytohormone for Plant Responses to Aluminum Toxicity Stress]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202212002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Aluminum is the most abundant metal element in the crust. Soil acidification will cause great increase of the aluminum solubility to produce a large number of Al3+, which is toxic to plants. The activated aluminum will inhibit root growth, affect nutrient absorption and many physiological and biochemical metabolism processes, and further reduce crop yield. Aluminum toxicity has been the most important limiting factor for crop growth in acid soils which account for about 40% of cultivated land in the world. Phytohormones are the key endogenous factors that regulate plant responses to various environmental stresses, and are crucial to the improvement of plant resistance and plant survival under various stresses. It is well known that abscisic acid, auxin, ethylene, cytokinin, jasmonic acid and other major plant hormones play an important role in regulating plant responses to aluminum toxicity stress. A large number of studies have shown that plant hormones can also improve the adaptability of plants to aluminum stress by regulating the activities of cell wall-modifying enzymes, reactive oxygen species metabolism and organic acid secretion. In addition, there are complex interactions between different plant hormone signals, which jointly mediate and regulate the adaptive response of plants to aluminum stress. In order to have a more comprehensive and in-depth understanding of the mechanism of plant hormones in aluminum toxicity response, and to provide new ideas for molecular genetic improvement of plants tolerance to aluminum toxicity, in the study, the signal transduction and regulation of plant hormone signals in the process of plant response to aluminum toxicity stress are reviewed, and the future research direction of plant hormones under aluminum toxicity stress is prospected.]]></description>
<pubDate>2023/2/6 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[PENG Lishun, CAO Zhengying, YANG Benpeng, CAI Wenwei]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>PENG Lishun, CAO Zhengying, YANG Benpeng, CAI Wenwei</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202212002&flag=1]]></guid><cfi:id>25</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effects of Different Hormone Treatments on Germination of Nicandra physaloides Seeds]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202210001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The seed germination of Nicandra physaloides was seriously affected by external colloid. 
The study was conducted in order to explore the effects of different hormone treatments on germination of N. physaloides
seeds and increase the seed germination rate.【Method】The seeds of N. physaloides were used as test materials, and the 
random block method was used to set 4 ℃ low temperature treatment with seeds put on gauze and MS medium treatments of 
gibberellin (GA3
), 6-benzylaminopurine (6-BA) and naphthylacetic acid (NAA), and the results of the four treatments were regularly observed and recorded.【Result】Compared with the normal temperature control, low temperature treatment at 4 ℃ 
on gauze significantly promoted the germination of N. physaloides seeds, and the highest germination rate was 25% after 48 h of 
treatment. The germination rate and germination index of N. physaloides seeds treated with 10 mg/L GA3
 were 92.00% and 9.58, 
which were 4.27% and 1.33 higher than those of CK, respectively. The germination rate of the seeds treated with 1 mg/L 6-BA 
was the highest as 96.63%, and the germination potential of the seeds treated with 2 mg/L 6-BA was the highest as 73.33%, 
which were 8.9% and 10.07% higher than those of CK, respectively. The germination rate of the seeds treated with 1 and 2 mg/L 
NAA was 88.86%, but both the germination potential and germination index were lower than CK. Compared with CK, 10 and 
50 mg/L GA3
 treatment significantly increased hypocotyl length, while 6-BA and NAA treatments significantly decreased 
hypocotyl length.【Conclusion】Low temperature treatment can significantly promote the germination of N. physaloides seeds, 
and low concentration hormone treatment on MS medium can improve the germination rate of N. physaloides seeds. Through 
comprehensive comparison of germination rate, germination potential, germination index and hypocotyl length, the best hormone 
treatment for N. physaloides seeds is MS + 10 mg/L GA3
.]]></description>
<pubDate>2022/11/29 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[MAI Peiting1
, LIANG Shaofang1
, ZHOU Lichang2
, GONG Chao,1
LUO Shaobo1
, SUN Baojuan1
, HENG Zhou1
, LI Tao1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>MAI Peiting1
, LIANG Shaofang1
, ZHOU Lichang2
, GONG Chao,1
LUO Shaobo1
, SUN Baojuan1
, HENG Zhou1
, LI Tao1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202210001&flag=1]]></guid><cfi:id>24</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effects of Leaf Spraying Biogas Slurry Fertilizer on Cotton Yield and Quality]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202307010&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】Biogas slurry fertilizer is a kind of high quality organic liquid fertilizer, and the application of organic fertilizer in cotton fields in Xinjiang is less or no. This study was conducted to explore the effects of foliar spraying biogas slurry fertilizer on the growth, yield and quality of cotton in oasis of Xinjiang. 【Method】Four concentration gradients of biogas slurry fertilizer were set: Cotton foliar spraying experiment was carried out at 0 kg/hm2 (CK), 15 kg/hm2 (OM1), 30 kg/hm2 (OM2), 45 kg/hm2 (OM3). After spraying at bud stage and flowering stage, cotton plant height, leaf number and leaf width were investigated, and dry matter weight of each organ of cotton was weighed. The effects of biogas slurry fertilizer spraying on cotton growth, yield and quality were studied by measuring chlorophyll content of functional leaves and analyzing yield and quality indexes. 【Result】 (1) Application of biogas slurry fertilizer could promote the growth of cotton, significantly increase the plant height, leaf number and leaf width of cotton, and the growth indexes of cotton treated with OM2 (30 kg/hm2) were better. (2) The dry matter weight of stem, leaf, bud (boll) and root was significantly increased by applying biogas slurry fertilizer. The dry matter weight in various organs of cotton increased with the increase of spraying concentration at bud stage. After spraying at flowering stage, only the dry matter of leaves increased with the increase of spraying concentration. (3) Spraying biogas slurry fertilizer on leaves can increase the chlorophyll content of cotton leaves. From bud stage to flowering stage, the SPAD values of leaves in OM2 treatment was between 63.35 and 71.55, with the smallest change over time. (4) With the increase of biogas slurry fertilizer application rate, cotton yield first increased and then decreased, and OM2 treatment had the highest seed cotton yield (6 338 kg/hm2) which increased by 7.37% compared with the CK. The application of biogas slurry fertilizer showed that the overall quality of cotton fiber was improved, and the length, uniformity and Macronaire value of cotton fiber were improved. With the increase of biogas slurry fertilizer application amount, the length of cotton fiber showed a downward trend. The uniformity and Micronaire valu e of fiber increased first and then decreased. The breaking strength decreased first and then increased, and the lowest value was 31.78 cN/tex under OM2 treatment. 【Conclusion】 In the oasis cotton planting area of Xinjiang, spraying biogas slurry fertilizer on the leaf surface of cotton at bud stage and flowering stage promoted the growth of cotton, and was beneficial to maintain the chlorophyll content (SPAD values) of functional cotton leaves. Suitable for spraying biogas slurry fertilizer, can improve cotton yield and quality, but excessive spraying biogas slurry fertilizer (OM3: 45 kg/hm2) will reduce cotton yield.]]></description>
<pubDate>2023/9/20 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[LIU Yu, WANG Guodong, CHEN Yun]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LIU Yu, WANG Guodong, CHEN Yun</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202307010&flag=1]]></guid><cfi:id>23</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Research Progress on Biosynthesis and Regulatory Mechanisms of Chlorogenic Acid in Solanaceae Crops]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202307011&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Chlorogenic acid is an important polyphenolic compound in plants, which plays an important physiological role in plant growth and development, disease and pest resistance, cold resistance and other stresses. It has a variety of pharmacological functions, including anti-inflammatory, antibacterial, antiviral, anticancer, anti-ultraviolet light and radiation, immunoregulation, hypolipidemic, hypoglycemic, etc. Chlorogenic acid has great potential especially in functional foods, nutritional supplements, raw food materials, chemical industry and drug development. Tomato, eggplant, pepper, potato and tobacco are important cash crops in the world. They are all important types of Solanaceae plants, and also important sources of chlorogenic acid. The content of chlorogenic acid in fruits or vegetative organs of Solanaceae crops varies greatly, and their chlorogenic acid anabolism is a complex biological process determined by genetic and environmental factors. Therefore, the research on biosynthesis and molecular mechanisms of regulation of chlorogenic acid in Solanaceae crops has important theoretical significance and application value for crop genetic improvement. The article outlines the content of chlorogenic acid in the above five Solanaceae crops, the biosynthetic pathways and transcriptional regulation molecular mechanisms of chlorogenic acid, and the effects of genotype differences, environmental factors, cultivation measures on chlorogenic acid content in Solanaceae crops, which is expected to provide theoretical bases for the development and utilization of chlorogenic acid in Solanaceae crops, the creation of germplasm resources with high chlorogenic acid and the breeding of new varieties of Solanaceae crops.]]></description>
<pubDate>2023/9/20 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[SHAO Xiuhong1, ZHANG Haixia2, MA Zhuwen1, CHEN Junbiao1, PAN Xiaoying1, LI Jiqin1, HUANG Zhenrui1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>SHAO Xiuhong1, ZHANG Haixia2, MA Zhuwen1, CHEN Junbiao1, PAN Xiaoying1, LI Jiqin1, HUANG Zhenrui1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202307011&flag=1]]></guid><cfi:id>22</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effects of GA3 and 6-BA Combination Treatment on Germination and Seedling Raising of Sweet Potato]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202306002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】In order to effectively alleviate the problem of sweet potato thin and weak seedlings caused 
by GA3
 soaking and germination in production, the feasibility of GA3
 and 6-BA combination soaking treatments to improve 
the quality of sweet potato seedlings was studied.【Method】The seeds were soaked with 1, 5 and 10 mg/L GA3
 alone and 
mixed with 5 mg/L 6-BA respectively, which were named as group G and group GB. In addition, there are two treatments of 
water immersion (G0, CK1
) and 5 mg/L 6-BA separate immersion (G0B, CK2
), a total of 8 treatments were conducted to study 
its effects on the germination of sweet potato tubers, the growth morphology of sweet potato seedlings, weight of the single 
seedling, dry matter percentage and the number of harvested seedlings in ‘Xinxiang’.【Result】The results showed that 1 
mg/L GA3
 soaking treatment had the best effect on regulating the germination of sweet potato and the growth morphology 
of sweet potato seedlings. The average number of root eye germination of sweet potato was 11, the total number of buds was 
16.33, the average seedling height was 8.80 cm, and the diameter of the seedling base was 3.01 mm. However, with the increase of GA3
 concentration, the diameter of the seedling base ,the weight of the single seedling and the dry matter percentage 
became smaller, and the quality of the sweet potato seedlings became worse. After GA3
 and 6-BA compound treatment, the 
quality of potato seedlings was effectively improved. The higher the concentration of GA3
, the more significant the effect was. 
Among them, 10 mg/L GA3
 and 5 mg/L 6-BA compound soaking treatment had the best effect on improving the quality of potato 
seedlings. The diameter of the seedling base was 3.40 cm, the dry matter percentage was the highest, and the weight of the single 
seedling was higher than that of GA3
 soaking treatment alone. The two treatment groups can effectively improve the number of 
harvested potato seedlings, and the difference is very small. Among them, the total number of seedlings harvested in the GA3
treatment group(G1+G5+G10) was 282, but the quality of potato seedlings was poor. The total number of seedlings harvested in 
the combined treatment group of GA3 and 6-BA(G1B+G5B+G10) was 281, and the quality of potato seedlings was significantly 
improved.【Conclusion】In conclusion, 6 -BA can alleviate the disadvantages caused by high concentration GA3
 soaking seed, 
make the stems of sweet potato seedlings thick, the dry matter percentage increases, and the quality of the seedlings improves. 
Furthermore, the combination of 10 mg/L GA3
 and 5 mg/L 6-BA could effectively alleviate the seedling we akness caused by 
high concentration of GA3
 on sweet potato variety ‘Xinxiang’.]]></description>
<pubDate>2023/8/17 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[FU Guozhao1,2, ZHANG Zhiwei1
, REN Zhikuan2
, LIU Baiqing1
, DONG Yanan1
, YANG Cuiqin1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>FU Guozhao1,2, ZHANG Zhiwei1
, REN Zhikuan2
, LIU Baiqing1
, DONG Yanan1
, YANG Cuiqin1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202306002&flag=1]]></guid><cfi:id>21</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effects of Irrigation Period and Frequency on Yield and Quality of Linseed]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202306003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The effects of irrigation period and frequency on the yield and quality of linseed were clarified 
to provide reference for water-saving irvigation in linseed producing areas.【Method】The yields, qualities and lodging 
resistances of linseed under different irrigation treatments were evaluated in this study by setting irrigation treatments at 3 
growth stages (fir-needle stage, initial flowering stage and filling stage) with different irrigation times (irrigating once in each 
period, irrigating twice in any 2 stages, and irrigating 3 times in all 3 stages).【Result】The results showed that irrigation 
had a positive effect on linseed growth in arid areas with annual rainfall of about 220 mm. Compared with the control without 
irrigation, each irrigation treatment increased the yield of linseed by 2.5%-75.1%. The average yield of irrigating once, twice and three times was 1 321.5 kg/hm2
, 1 375.5 kg/hm2
 and 1 870.5 kg/hm2
, respectively, which was 23.7%, 28.8% and 
75.1% higher than that of the control (1 068.0 kg/hm2
), correspondingly. It was showed that the plants were more robust and 
with higher bending resistance in the treatment of fir-needle stage irrigation (including single and multiple irrigation) than in 
the treatment of no irrigation in the fir-needle stage. Compare to the control, the contents of crude fat and α-linolenic acid for 
irrigation treatments were lower, decreasing by 2.22%-6.96% and 0.21%-9.44%, respectively.【Conclusion】In this research, 
irrigation three times (irrigating once at fir-needle, initial flowering and filling stage, respectively) is an effective irrigation 
measure for linseed production in arid areas, and its net income is the highest, with an increase of 4 807.5 yuan/hm2
 compared 
with no irrigation. However, the yield to input ratio of irrigating once (at the fir-needle stage) is the highest (4.06), and the yield 
efficiency is good, reaching 97% of the income of the treatment of irrigating three times, which can be used as an alternative 
water-saving irrigation scheme in this region.]]></description>
<pubDate>2023/8/17 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[ZHAO Baoxie1
, WANG Lei2
, YU Hualin1
, LI Yuyang1
, 
TAN Meilian2
, SHI Xuehao1
, YANG Jizhong1
, MA Quanfang1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHAO Baoxie1
, WANG Lei2
, YU Hualin1
, LI Yuyang1
, 
TAN Meilian2
, SHI Xuehao1
, YANG Jizhong1
, MA Quanfang1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202306003&flag=1]]></guid><cfi:id>20</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Cloning and Expression Analysis of Phenylalanine Ammonialyase Gene AdPAL1 in Angelica dahurica cv. Yubaizhi]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202305001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】This study aimed to explore the correlation between the content of imperatorin and the 
expression of the phenylalanine ammonia-lyase gene (AdPAL1) of Angelica dahurica cv. Yubaizhi (YBZ). In addition, 
AdPAL1 was cloned and expressed in prokaryotes.【Method】The content of imperatorin in the roots and leaves of YBZ 
during its rapid growth stage and harvest stages was measured using high-performance liquid chromatography (HPLC), and 
the expression of the AdPAL1 gene in the roots and leaves during the same stages was detected using real-time fluorescent 
quantitative PCR (qRT-PCR) to observe whether there was a correlation between imperatorin content and the expression of the AdPAL1 gene. Furthermore, the AdPAL1 gene was cloned from the root of YBZ based on its transcriptome using reverse 
transcription-polymerase chain reaction (RT-PCR) technology, and it was expressed in Escherichia coli.【Result】During the 
rapid growth period of YBZ, the content of imperatorin in the roots is much higher than that in the leaves, and the expression level 
of AdPAL1 in the roots is also much higher than that in the leaves. Compared with the rapid growth stage, the content of imperatorin 
in the roots slightly decreases during the har vest stag e, and the expression level of AdPAL1 gene in the roots also decreases at the 
same time. These results indicate a correlation between the expression of AdPAL1 gene and the content of imperatorin. In addition, 
bioinformatics analysis show that the AdPAL1 gene (GenBank accession number: OQ822236) of YBZ has an open reading frame 
length of 1 764 bp and encods 557 amino acids. The relative molecular weight of AdPAL1 protein is 61.10 kD, and its isoelectric 
point is 5.92. It has a conserved domain of phenylalanine ammonia lyase (IPR005922, 1-547), which belongs to the PAL protein 
family and it is located in the cytoplasm and is mainly composed of α- helixes and irregular coils. AdPAL1 has the closest genetic 
relationship with the KpPAL2 protein in Kitagawia praeruptora, with a local sequence similarity of up to 99.28%. The relative 
molecular weight of the recombinant protein of AdPAL1 gene expressed in E. coli is about 84.00 kD, which is consistent with 
the expected protein size.【Conclusion】The correlation between the content of imperatorin in roots and leaves of YBZ and the 
expression of AdPAL1 gene was preliminarily determined, and the AdPAL1 gene was cloned and successfully expressed in E. coli. 
These results provide a reference for further research on the mechanism of AdPAL1 gene in imperatorin biosynthesis.]]></description>
<pubDate>2023/7/5 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[ZHANG Xiaodong, LIU Yongjiang, SHA Mo, ZHAO Jingjing, LI Huiping, ZHNAG Xi]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZHANG Xiaodong, LIU Yongjiang, SHA Mo, ZHAO Jingjing, LI Huiping, ZHNAG Xi</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202305001&flag=1]]></guid><cfi:id>19</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Diversity Analysis of Quantitative Traits of Maize Varieties in Different Ecological Regions of Shanxi Province]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202305002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】 To fully explore and utilize high quality maize varieties in different ecological regions of Shanxi Province. 【Method】 Correlation analysis, principal component analysis and cluster analysis were performed on 13 quantitative traits of 75 maize varieties from 4 ecological regions in Shanxi Province. 【Result】 Among the 13 quantitative characters, the variation coefficients of seed yield and crude starch content were small, which were 1.78% and 1.92%, respectively, indicating that these two characters could be inherited stably. The coefficient of variation of ear position and ether extract was 15.06% and 13.78%, respectively, indicating that ear position and ether extract of maize varieties had greater potential for selection. Yield was significantly positively correlated with growth period, total leaf number, plant height, ear position, row number, 100-grain weight and seed production rate, and the correlation coefficients were 0.591, 0.520, 0.630, 0.57, 0.315, 0.461 and 0.380, respectively. The yield was significantly negatively correlated with crude fat, and the correlation coefficient was -0.438. The results of principal component analysis showed that the cumulative contribution rate of the first four principal components was 71.35%. The first principal component mainly reflected the yield, crude fat, ear position and total leaf number. The second principal component mainly reflected growth period, row number and crude starch. The third principal component mainly reflected the crude protein, crude starch, ear length and row number. The fourth principal component mainly reflects the bulk density. Cluster analysis showed that 13 quantitative characters of 75 maize varieties were divided into 3 groups, and the characteristics of each group were preliminarily defined. Group Ⅰ was suitable for screening maize varieties with higher bulk density, crude protein and crude fat content, group Ⅱ was suitable for screening maize varieties with high yield and high crude starch content. Group Ⅲ was suitable for screening maize varieties with higher plant height, ear position and ear length. 【Conclusion】 The 75 maize materials had rich genetic diversity, and the quantitative characters were correlated with each other to different degrees. A total of 4 principal components were extracted by principal component analysis, with a cumulative contribution rate of 71.36%, which were yield factor, row number factor, crude protein factor and bulk density factor. The 75 maize varieties were divided into three groups by cluster analysis. The differences of these three groups were shown in the characteristics of bulk density, yield and plant height. This study laid a foundation for the selection and character improvement of maize parents in Shanxi Province.]]></description>
<pubDate>2023/7/5 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[WANG Yi, LIU Shouqu, GUO Feng, REN Xiaoyan, DUAN Yunping]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>WANG Yi, LIU Shouqu, GUO Feng, REN Xiaoyan, DUAN Yunping</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202305002&flag=1]]></guid><cfi:id>18</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effects of Different Sowing Dates on the Yield and Quality of Fresh Waxy Corn in South China]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202305003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study aims to explore the influence of sowing date on the yield and quality of waxy corn varieties, so as to provide theoretical basis and technical guidance for the production practice of waxy corn in South China.【Method】The study adopted a two-factor split area design, with 2 sowing dates (August 15 and August 25) and 5 varieties (Yueheitiannuo 1, Yuecaitiannuo 5, Yuecainuo 2,Yuebaitiannuo 12, Yuebaitiannuo 168) as the treatment factors, and investigated the growth period, plant height, ear length, yield and quality of fresh waxy corn.【Result】With the delay of the sowing date, the whole growth period of the autumn sowing waxy corn is gradually extended. The whole growth period of the five varieties was extended by 13, 11, 10, 11 and 12 days, respectively, among which the extension period was mainly reflected in the vegetative growth stage to tasseling stage. Except for ear length and ear size, the delay of sowing date increased the plant height, ear position height, stem size, fresh weight, ear weight, baldness, ear number and grain number of waxy corn, but at the same time, the quality and yield showed a downward trend. The yield of Yuecaitiannuo 5 increased by 32% with the delay of sowing date, while the yield of Yueheitiannuo 1, Yuecainuo 2, Yuebaitiannuo 12 and Yuebaitiannuo 168 decreased by 11%, 5%, 9% and 4%, respectively. In addition, the correlation analysis can show that the effective accumulated temperature of the whole birth period around 1200 ℃·d is more conducive to ensuring a higher harvest index and then obtaining a high yield. Meteorological factors also have a significant influence on the yield of waxy corn. Among them, the daily average temperature corstrongly correlation with yield, and the correlation coefficient between the two is 0.932, which is the main meteorological factor affecting the yield of fresh waxy corn. Accordingly, This indicates that in the autumn waxy corn production, it is necessary to pay attention to the monitoring and prediction of meteorological conditions to develop better develop agronomic measures and improve yield and quality.【Conclusion】The influence of waxy corn yield and quality is mainly reflected in the emergence to the male, during this period, waxy corn to higher temperature requirements, if the temperature is too low will lead to its nutritional growth period, growth rate and cause production, in waxy corn production, choose suitable for yield and quality has important role, Autumn waxy corn in South China is suitable for sowing around August 15.]]></description>
<pubDate>2023/7/5 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[MA Ziwei1, LI Wu1，2]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>MA Ziwei1, LI Wu1，2</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202305003&flag=1]]></guid><cfi:id>17</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Diversity and Correlation Analysis of Traits based on Yunnan Maize Hybrids Testing]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202305004&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】To evaluate the application of distinctness, uniformity, and stability (DUS) testing traits in maize hybrids.【Method】89 hybrid maize varieties in Yunnan Province for DUS testing in 2020-2021 were used as materials, based on the tested data, diversity and correlation analysis were conducted for 38 testing traits, and cluster analysis was conducted for 89 hybrids.【Result】A total of 191 expression states were detected for 38 traits in 89 maize hybrids, with an average of 5.0263 detected for each trait, with a range of 2~8. The average effective expression state was 2.8217, with a range of 1.0227~6.0697. The average Shannon-Weaver diversity index for 38 traits was 1.0669, with a range of 0.0616～1. 9069. The diversity performance of different traits is varies greatly, with some traits showing only 2 expression states in 89 maize varieties, and the number of effective expression states and Shannon-Weaver diversity index are relatively low. There are 8 expression states for some traits in 89 maize varieties, and the number of effective expression states and Shannon-Weaver diversity index are relatively high. Among the 38 testing traits, 12 pairs of traits had a highly significant positive correlation. The correlation coefficients between pollination stage and heading stage, and between plant spike height and plant spike height/plant height ratio were higher, 0.94 and 0.90, respectively. The above results indicate that the diversity of the tested traits in the current maize DUS testing guidelines in hybrids is good, and the variety differentiation is strong. It is also suggested that there are traits with significant correlations among traits, and special considerations should be taken in the determination of specificity and substantial derived varieties, different weights can be given based on their importance to calibrate the judgment results. Cluster analysis showed that the similarity coefficient of 89 hybrids ranged from 0.24 to 0.53, which could be clustered into five major groups. Group IV included 81 varieties, accounting for 91.0%, the similarity coefficient of the closest variety in this group was 0.53, indicating that Yunnan maize hybrids had good diversity and significant differences among varieties.【Conclusion】The current maize DUS testing traits still maintain high discrimination in maize hybrid varieties testing, with rich diversity of testing traits and a highly significant positive correlation between 12 pairs of testing traits.]]></description>
<pubDate>2023/7/5 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[YAO Zongze1, YANG Yan2, WANG Shimin2, LIU Yanfang1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>YAO Zongze1, YANG Yan2, WANG Shimin2, LIU Yanfang1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202305004&flag=1]]></guid><cfi:id>16</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Mapping of QTLs for Tolerance of Hypoxia Germination in Rice with a High-density Genetic Map]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202304002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】Tolerance to hypoxia germination is one of the key traits for direct-seeding adaptability of rice. The temperate direct-seeding japonica rice variety Francis and multi-panicle indica restorer line R998 were used for QTL mapping of hypoxia germination related traits, aiming to provide new valuable gene resources for developing direct-seeding rice varieties and the promotion of direct-seeding rice production methods. 【Method】The coleoptile length, shoot length and maximum root length of rice seedlings submerged in 10-cm-depth water in the dark for 7 days at 28℃ were recorded as indicators of hypoxia germination tolerance capacity. A high-density genetic map containing 3 106 bin markers was constructed by low-coverage genome re-sequencing, and QTL scanning was performed with WinQTL Cart 2.5.【Result】Under the condition of hypoxia germination, the coleoptile length and root length of Francis are significantly higher than those of R998, but there is no significant difference in shoot length between them. The total genetic distance of the constructed genetic map is 3 646.2 cM, in which the number of markers on chromosome 12 is the least, and that on chromosome 1 is the most, with 174 and 389, respectively. The average marker distance in the genetic map is 1.21 cM, the marker distance of each chromosomes is 0.68 -1.84 cM, and the gaps above 5 cM account for 0.36%. By using composite interval mapping (CIM), six QTLs related to hypoxia germination tolerance are detected on 5 chromosomes. Among them, the number of QTLs controlling coleoptile length, shoot length and root length are 3, 1 and 2, respectively. The coleoptile locus qCL9 and the shoot length locus qSL5 had a phenotypic variance explained (PVE) over 10%, which are 13.39% and 10.78%, respectively. The beneficial allele of qCL9 and the root length locus qRL2-1 come from the parent Francis, while the other four beneficial alleles are provided by the parent R998. Three of the six QTLs have not been reported previously, therefore, they may be novel QTLs.【Conclusion】In summary, there is significant difference between Francis and R998 in hypoxia germination, and both parents have beneficial alleles for hypoxia germination tolerance. qCL9 and qSL5 are major effect QTLs controlling hypoxia germination tolerance and have practical value in the molecular breeding of direct-seeding rice.]]></description>
<pubDate>2023/6/8 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[YAN Xiaoxia1, 2, ZHU Manshan2, WANG Feng2, LIU Wuge2, LI Jinhua2, HUO Xing2, HUANG Yongxiang1, LIU Dilin2]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>YAN Xiaoxia1, 2, ZHU Manshan2, WANG Feng2, LIU Wuge2, LI Jinhua2, HUO Xing2, HUANG Yongxiang1, LIU Dilin2</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202304002&flag=1]]></guid><cfi:id>15</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effect of Cadmium Stress on the Growth and Cadmium Absorption Rules of Different Tobacco Varieties]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202304003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The research was conducted to explore the response of different varieties of tobacco to cadmium (Cd) stress, deeply understand the toxic effect of cadmium on tobacco, and provide a theoretical basis for the prevention and control of tobacco Cd pollution.【Method】With ten tobacco varieties as test materials, the agricultural properties, physiological and biochemical indexes and cadmium content under different concentrations of exogenous cadmium were analyzed by pot method.【Result】Cadmium stress promoted the growth of some tobacco varieties under low concentration and inhibited their growth under high concentration, while it showed inhibition effect on the rest of varieties. Among the tested varieties, Zhongyan 100 and Yuyan 10 were sensitive to cadmium stress, and the biomass reduction rates of Zhongyan 100 under high and low cadmium stress were 29.98% and 29.94%, and those of Yuyan 10 were 22.16% and 28.39%, respectively. With the increase of cadmium concentrations, the chlorophyll content, Pn, Gs and Tr of tobacco leaves showed a decreasing trend; while SOD activity, POD activity, MDA content and free proline content in tobacco leaves showed an increasing trend. Cadmium contents in all organs of tobacco increased with the increase of cadmium concentration, and the rule showed as: leaf > stem > root. In the whole growth period, cadmium content showed a trend of increasing first and then decreasing, and the highest value was obtained in the prosperous stage. The cadmium contents in leaves of Zhongyan 100, Yuyan 10 and Yuyan 13 were significantly higher than those of other varieties. The cadmium content in leaves of Yuyan 10 was highest (60.27 mg/kg) at a cadmium concentration of 3 mg/kg, while cadmium contents of Yunyan 87 and K326 were 38.88 mg/kg and 39.23 mg/kg, relatively low. At a cadmium concentration of 10 mg/kg, the cadmium contents in leaves of Zhongyan 100 and Yuyan 13 were 109.3 mg/kg and 101.3 mg/kg, relatively high. The cadmium content in leaves of Yunyan 105 was significantly lower (62.75 mg/kg) than that of other varieties. The enrichment capacity of tobacco showed a trend of increasing first and then decreasing after the growth period, and the enrichment coefficient reached the maximum value generally in the prosperous stage. The enrichment coefficient of Yuyan 10 was highest (18.6) at the cadmium concentration of 3 mg/kg, while the enrichment coefficients of Yunyan 87 and K326 were lower with values of 12.00 and 12.11; At the cadmium concentration of 10 mg/kg, the enrichment coefficient of Zhongyan 100 was highest with a value of 9.89, and enrichment coefficient of Yunyan 105 was lowest with a value of 6.13. The enrichment coefficient of Zhongyan 100 was 1.61 times that of Yunyan 105.【Conclusion】The varieties Zhongyan 100, Yuyan 10 and Yuyan 13 are sensitive to cadmium, while the varieties Yunyan 8, Yunyan 105 and K326 are resistant to cadmium.]]></description>
<pubDate>2023/6/8 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[LI Chunping1, QIN Dehua1, WEN Xiaoyang1, RAO Wei1, WANG Yujie 2, XU Guowei1, CHEN Mingcan1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LI Chunping1, QIN Dehua1, WEN Xiaoyang1, RAO Wei1, WANG Yujie 2, XU Guowei1, CHEN Mingcan1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202304003&flag=1]]></guid><cfi:id>14</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Spatial-temporal Variation and Driving Factors of Soil pH in Typical Cigar Area of Southwest China over the Past 35 Years]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202304009&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The spatial-temporal variation characteristics of soil pH and its driving factors were clarified to provide a basis for the improvement of soil acidification in southwest cigar area.【Method】Based on soil pH data of 26 sample points of the second general soil survey in Sichuan Province in 1984, 391 sample points of soil testing and fertilizer recommendation survey in Sichuan Province in 2009, and 164 sample points of cultivated land quality survey in Sichuan Province in 2019, Multi-statistics and Geostatistics were used to analyze the spatial-temporal variation characteristics of soil pH, and Random Forest model was used to explore the main driving factors of soil pH change.【Result】The mean values of pH in Shifang City in 1984, 2009 and 2019 were 6.40, 6.24 and 5.97, respectively, and the average annual value decreased by 0.01 from 1984 to 2009 and by 0.02 from 2009 to 2019. From 1984 to 2019, except for Jiandi Town and Yinghua Town, where the average soil pH value showed an upward trend, the rest of the towns were on the decline, with the largest decrease of 30.62% in Hefeng Town and the smallest decrease of 0.30% in Shigu Town. The overall soil pH in 1984 was dominated by weakly acidic and neutral properties, with alkaline soils accounting for 2.59% of the total area planted with tobacco, and the spatial distribution was characterized by higher soil pH in three areas: Luoshui Town, Hefeng Town and Majing Town. In 2009, only weakly acidic and neutral soils existed in the study area, and soil pH was spatially high in the centre and low in the north and south. In 2019, the area of weakly acidic and neutral soils accounted for 95.25%, and the area of acidic soils (pH<5.5) accounted for 4.75%, which were mainly distributed in the towns of Majing, Mazu, Hefeng, Nanquan and Shigu. And soil pH in the south was spatially lower than that in the north. Soils planted with tobacco over the past 35 years have generally shown changes in acidification, with about 53.51% of the soil was acidified (ΔpH < -0.3), mainly distributed in the towns of Majing, Hefeng and Mazu, and about 11.63% of the soil was alkaline (ΔpH ＞ 0.3), mainly in the towns of Yinghua and Jiandi; The pH of 44.98% tobacco growing soils ranged from -1.0 to -0.3, 34.86% ranged from -0.3 to 0.3, and tobacco growing soils with ΔpH ≤ -1.0 accounted for 8.54%. The random forest results showed that mean annual precipitation and soil organic matter were the main factors causing soil acidification.【Conclusion】Over the past 35 years, the acidification of tobacco growing soils in Shifang City was aggravated. Some measures should be taken to adjust the situation in production, such as creating new special fertilizer and applying soil conditioner.]]></description>
<pubDate>2023/6/8 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[HU Yue1,2, FAN Hongzhu2, CHEN Yong3, ZHANG Xiao2, LEI Yunkang3, LI Fucheng1, FENG Wengqiang4]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>HU Yue1,2, FAN Hongzhu2, CHEN Yong3, ZHANG Xiao2, LEI Yunkang3, LI Fucheng1, FENG Wengqiang4</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202304009&flag=1]]></guid><cfi:id>13</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Construction of Rice Mutants of the Polyamine Oxidase Gene OsPAO4 Based on CRISPR/Cas9 Editing]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202303001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】Rice blast is an important limiting factor in rice production. Exploring and utilizing resistant genes is an important guarantee for achieving high and stable yield of rice. Previous studies have shown that rice blast resistance-related microRNA osa-miR-21 may regulate rice blast resistance by targeting the polyamine oxidase gene OsPAO4. However, the function of Polyamine Oxidases (PAOs) in rice disease resistance has not been reported. In order to further explore the possible biological function of OsPAO4 gene in rice disease resistance, the CRISPR/Cas9 editing technology was used for site-specific editing of ospao4 gene mutants and the edited offspring were also analyzed.【Method】A 20-bp editing target was designed in the second exon of OsPAO4, and the nucleotide fragments of the target was cloned into pRGEB32 vector to obtain OsPAO4 editing vector. Then, the rice Pik-H4 NIL callus was transformed by Agrobacteriummediated method. Positive transgenic plants were obtained by regeneration culture and hygromycin detection, PCR and sequence analysis were performed on the DNA sequences near the target site in the T0 generation plants.【Result】The results show that the OsPAO4 gene was successfully edited and finally 25 transgenic-positive plants were obtained, and various mutation types were produced in the T0 generation, including 3 homozygous mutants, 18 heterozygous mutants and 4 nonedited plants. In addition, the glume color of the heterozygous mutation ospao4-8 of the T0 generation changed from purple to dark gray, and the activity of catalase (CAT) in the mutants was increased. It was predicted that OsPAO4 might participate in the basis immunization process.【Conclusion】A variety of ospao4 mutants were created in this study, and it was preliminarily determined that OsPAO4 might participate in the regulation of rice immune process, which laid an important foundation for further revealing the specific biological function and molecular regulation mechanism of OsPAO4 gene.]]></description>
<pubDate>2023/5/5 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[LIN Chunzi, HUANG Qiwei, HOU Yan, GAO Shang, HAN Zhikai,WEI Danhong, CHEN Chun, WANG Jiafeng]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LIN Chunzi, HUANG Qiwei, HOU Yan, GAO Shang, HAN Zhikai,WEI Danhong, CHEN Chun, WANG Jiafeng</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202303001&flag=1]]></guid><cfi:id>12</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Study on the Data Collection Method and Application of Standard Sample Database of Yunnan High-quality Rice]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202303002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The method of collecting standard sample data of high-quality rice was explored in order to build a standard sample database of high-quality rice varieties in Yunnan Province and provide technical support for authenticity identification, purification and rejuvenation of high-quality rice varieties.【Method】The seeds for production and the stock seeds of Yunhui 290 and Diantun 502 were used as research materials. The characteristics of high-quality rice varieties were comprehensively and completely described by using techniques such as variety agronomic character 
investigation, SSR molecular marker construction fingerprint, rice quality detection. 【Result】 Twelve pairs of core markers on 12 chromosomes of rice were used to collect the fingerprints of the seeds for production and the stock seeds. The results showed that there was no difference between the seeds for production and the stock seeds of Yunhui 290 and Diantun 502, which could be used to describe the fingerprints of Yunhui 290 and Diantun 502. 12 pairs of core markers were used to identify the genotype consistency of 48 individual plants randomly selected from the seeds for production and the stock seeds. The seeds for production and stock seeds of Yunhui 290 had the same amplification products in 12 markers, and there were no off-type. The band from the stock seeds of Diantun 502 were consistent, and there were no off-type. There were two markers with abnormal bands and two off-type in the seeds for production of Diantun 502. By using DUS test method, 17 DUS test characters and 4 plant parts pictures were collected, and 11 quality characters were collected according to the national high quality rice standard.【Conclusion】 With variety fingerprint, DUS test character, plant part picture, quality character and commodity information as five elements of the database, the standard sample database of high quality rice is built by computer programming software. The establishment of the standard sample database of high-quality rice can systematically describe varieties from the gene level, 
variety characteristics and appearance.]]></description>
<pubDate>2023/5/5 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[GUAN Junjiao1, LI Xiaolin1, KUI Limei1, GU Anyu1, DENG Wei1,TU Jian1, GUAN Min2, ZHANG Jianhua1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>GUAN Junjiao1, LI Xiaolin1, KUI Limei1, GU Anyu1, DENG Wei1,TU Jian1, GUAN Min2, ZHANG Jianhua1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202303002&flag=1]]></guid><cfi:id>11</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effect of Nitrogen Application Rate on Quality of Cigar Filler in Sichuan]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202303003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The research aims to investigate the effects of nitrogen application rates on growth, yield, output value and quality of cigar in order to provide a basis for rational application of nitrogen fertilizer in cigar filler planting in Shifang, Sichuan Province.【Method】With Dexue 3 (cigar filler) as material, the variation characteristics of agronomic characters, yield, output value, physical quality and chemical composition of tobacco plants under different nitrogen application rates (0, 60, 120, 150, 180 and 240 kg/hm2, which were recorded as N0, N60, N120, N150, N180 and N240, respectively) were analyzed by field experiment.【Result】Nitrogen application rate had little effect on agronomic character indexes of cigar at topping stage (44 days after transplanting). With the increase of nitrogen application rate, the yield and output value of tobacco leaves increased rapidly at first, then the yield increased slowly, and the output value decreased instead of increasing. Compared with N0 treatment, the yield and output value of nitrogen treatment obviously increased by 11.62%-57.62% and 10.11%-45.83%, respectively. Among them, the highest yield of tobacco leaves under N240 treatment was 2 737.18 kg/hm2, while the highest output value of tobacco leaves under N180 treatment was 99 834.63 yuan/hm2, both higher than those under N150 treatment, but there was no significant difference between treatments. With the increase of nitrogen application rate, the proportion of high-quality grade 1 and grade 2 tobacco leaves increased first and then decreased, while the proportion of lowquality grade 3 and lowest grade tobacco leaves presented an opposite trend, among which grade 1 and grade 2 tobacco leaves under N120 and N150 treatments accounted for the largest proportion, both reaching more than 80%. The comprehensive scores of physical quality and chemical composition of cigar leaves increased first and then decreased with the increase of nitrogen application rate. Among them, the coordination of physical quality and chemical composition of tobacco leaves treated with N120 was relatively better, and the comprehensive scores of physical quality and chemical composition of tobacco leaves were the highest, which were 8.58 and 7.58, respectively,【Conclusion】Suitable nitrogen application rate can increase the yield and output value of cigar tobacco, increase the proportion of high-quality tobacco, improve the physical quality of tobacco, and coordinate the chemical composition. Considering the yield, output value and quality of tobacco leaves, the reasonable nitrogen application rate of cigar filler in Shifang of Sichuan Province is 120-150 kg/hm2.]]></description>
<pubDate>2023/5/5 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[YUAN Xinyu1, 2, FAN Hongzhu2, CHEN Yong3, ZHANG Xiao2, LEI Yunkang3, LI Fucheng1, CHEN Liping3, FENG Wenqiang4]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>YUAN Xinyu1, 2, FAN Hongzhu2, CHEN Yong3, ZHANG Xiao2, LEI Yunkang3, LI Fucheng1, CHEN Liping3, FENG Wenqiang4</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202303003&flag=1]]></guid><cfi:id>10</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effects of Calcium on the Growth and Physiological Characteristics of Camellia oleifera under Aluminum Stress]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202302001&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study aims to investigate the effects of calcium on the growth and physiological characteristics of Camellia oleifera seedlings under aluminum stress, with a view to providing theoretical basis for revealing the physiological mechanism of calcium alleviation of aluminum stress in C. oleifera.【Method】The effects of different calcium concentrations (0, 0.5, 1.5, 3 and 5 mmol/L) applied under aluminum stress (4 mmol/L) on the growth, leaf photosynthesis, root osmoregulatory substances and antioxidant enzyme activities of C. oleifera seedlings were determined through a pot experiment.【Result】Aluminum stress inhibited the growth of C. oleifera seedlings significantly, and the application of 3 mmol/L calcium significantly alleviated the inhibition of aluminum growth in C. oleifera, and the plant dry weight increased by 40.58%. For photosynthetic parameters, aluminum stress reduced chlorophyll a, chlorophyll b, carotenoids and total chlorophyll contents of C. oleifera leaves. Net photosynthetic rate (Pn), stomatal conductance (Gs) and transpiration rate (Tr) decreased by 32.28%, 51.02% and 53.91%, respectively, compared with those under CK treatment, while intercellular CO2 concentration (Ci) increased by 20%. The addition of appropriate amount of calcium (1.5-3 mmol/L) significantly increased the photosynthetic pigment content, Pn, Gs and Tr, and decreased Ci of leaves. Compared with aluminum stress, calcium application could reduce the accumulation of root free proline and increased the soluble sugar content effectively. Under aluminum stress, the activities of superoxide dismutase (SOD), peroxidase (POD), catalase (CAT) in the roots and ascorbate peroxidase (APX) in the leaves were significantly reduced. The plasma membrane permeability and malondialdehyde (MDA) content in the roots were significantly increased. Calcium application significantly enhanced antioxidant enzyme activities. POD and AXP activities were highest when the calcium concentration was 1.5 mmol/L, which were 35.13 and 234.11 U/g, respectively; and SOD and CAT activities were highest when the calcium concentration was 3.0 mmol/L, which were 533.20 and 48.42 U/g, respectively. Meanwhile, the addition of appropriate concentration of calcium (1.5-3 mmol/L) significantly reduced root plasma membrane permeability and MDA content, which were 19.52%-31.40% and 23.32%-27.86% lower than those under aluminum stress treatment, respectively.【Conclusion】Calcium at moderate concentrations (1.5-3 mmol/L) significantly improved photosynthetic capacity and antioxidant enzyme activity of C. oleifera leaves, reduced reactive oxygen stress and production of membrane lipid peroxidation products, and alleviated the toxic effects of aluminum stress on C. oleifera seedlings by regulating osmotic substances. However, when the calcium concentration reached 5 mmol/L, it inhibited the growth of C. oleifera seedlings.]]></description>
<pubDate>2023/4/21 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[HUANG Liyuan, LIU Zhen, JIA Shengbo, DENG Siying, SHENG Yuxiang, WANG Qiong]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>HUANG Liyuan, LIU Zhen, JIA Shengbo, DENG Siying, SHENG Yuxiang, WANG Qiong</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202302001&flag=1]]></guid><cfi:id>9</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effects of Culture Conditions on the Growth of Dominant Strain ZLX10 from Cigar]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202302002&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】Microorganisms play a key role in the fermentation process of cigar tobacco leaves. In order to better improve the quality of cigar tobacco leaves, it is necessary to screen the dominant strains of cigars and apply them to the fermentation of cigar tobacco leaves. Therefore, it is necessary to optimize and expand the biomass of the dominant strains.【Method】16S sequencing and physiological and biochemical analysis were carried out on a dominant strain ZLX10 screened from cigars to identify the strain. At the same time, the composition of culture medium (carbon source, nitrogen source and inorganic salt) and culture conditions (inoculation amount, liquid content and seed age) were optimized through single factor and orthogonal test to improve its biomass.【Result】Based on 16S rDNA sequence comparison, the sequence homology between strain ZLX10 and Bacillus mojavensis (MT043920.1) reached 99.86%, and the strain had strong ability to degrade polysaccharide and protein macromolecule, which could be identified as Bacillus mojavenis. Through single factor and orthogonal test, the optimal medium formula of strain ZLX10 was obtained as follows: carbon source (sucrose) 50 g/L, nitrogen source (yeast extract) 20 g/L, inorganic salt (MgSO4) 0.25 g/L, and the optimal culture conditions were 1% (V/V) of inoculum, 30 mL/250 mL of liquid content, and 24 h of seed age. The biomass of strain ZLX10 was 1.98 times that before optimization when cultured under the optimal conditions for 24 h.【Conclusion】The biomass of strain ZLX10 can be significantly increased by optimizing the conditions, which provides a basis for artificial inoculation of fermented cigar tobacco leaves.]]></description>
<pubDate>2023/4/21 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[PAN Yong1, ZHANG Beibei2, ZHOU Yabin2, HU Jie1, JING Yuhui1, LI Linlin1, HUANG Youyi3, WANG Jian1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>PAN Yong1, ZHANG Beibei2, ZHOU Yabin2, HU Jie1, JING Yuhui1, LI Linlin1, HUANG Youyi3, WANG Jian1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202302002&flag=1]]></guid><cfi:id>8</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Effects of Chemical Fertilizer Reduction and Application of Organic Fertilizer on Growth and Rhizosphere Microorganisms of Litchi]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202302007&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】In regard to the problems including excessive chemical fertilizer application and serious soil quality decline in litchi orchards in Guangdong Province, and the urgent need of resource utilization of manure produced by the surrounding large-scale livestock and poultry breeding, the effects of fertilizer reduction combined with organic fertilizer on growth and rhizosphere microorganisms of litchi were studied, aiming to provide fertilization references for the scientific planting of litchi in Guangdong Province.【Method】‘Guiwei’ litchi was used as the research material. Six treatments were set: no fertilization (CK), chemical fertilizer application (CF), fertilizer reduction by 30%, and combined application of pig manure organic fertilizer of 5 kg/plant (OF5), 10 kg/plant (OF10), 15 kg/plant (OF15), and 20 kg/ plant (OF20). The relative indicators of enzyme activity of litchi rhizosphere soil, number of culturable microorganisms, microbial biomass, yield and quality under different treatments were compared.【Result】The results showed that compared with the CF treatment, when the chemical fertilizer application was reduced by 30%; Under the OF15 treatment, the invertase activity and urease activity of rhizosphere soil were increased by 35.3% and 25.6%, the number of actinomyces increased by 18.1%, and the microbial biomass nitrogen 
increased by 23.6%; Under the OF10 treatment, the phosphatase activity was increased by 32.2%, the number of fungi increased by 14.4%, the microbial biomass carbon increased by 26.1%; Under OF20 treatment, the number of culturable bacteria was increased by 11.8%. The application of organic fertilizer could significantly improve the quality and yield of litchi. Compared with the single application of chemical fertilizer, the yields under OF5, OF10, OF15 and OF20 treatments increased by 7.15%, 10.64%, 13.75% and 13.32%, respectively.【Conclusion】In conclusion, the application of 10kg-15kg pig manure organic fertilizer with chemical fertilizer reduced by 30% could significantly improve the quality and efficiency.]]></description>
<pubDate>2023/4/21 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[TU Panfeng1,3, WANG Chuan1, ZHANG Weili1,3, SONG Wenpei1, HU Yibo2, FENG Yueyan3, ZHANG Kunchang1, CEN Yingyuan1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>TU Panfeng1,3, WANG Chuan1, ZHANG Weili1,3, SONG Wenpei1, HU Yibo2, FENG Yueyan3, ZHANG Kunchang1, CEN Yingyuan1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202302007&flag=1]]></guid><cfi:id>7</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Genetic Characteristics of Permanent Thermo-sensitive Genic Male Sterility in Rice]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202311003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study aims to create a permanent thermo-sensitive genic male sterile line, with a view to providing support for solving the safety problem of two-line hybrid rice seed production.【Method】Based on the creation of a permanent thermo-sensitive genic male sterile line Tianfeng M by using recurrent parents to polymerize thermo-sensitive and reverse thermo-sensitive genic male sterile genes, the genetic characteristics of Tianfeng M sterility were studied.【Result】The results showed that the male sterility of Tianfeng M polymerizing the thermo-sensitive and reverse thermo-sensitive genic male sterile genes was controlled by two pairs of genes, one was thermo-sensitive genic male sterile gene, and the other was regulated by temperature, that is, multiple alleles from thermo-sensitive and reverse thermo-sensitive genic male sterile lines. And the dominant-recessive relationship was switched by temperature. Under high temperature, the genes from thermo-sensitivity was dominant, and the gene regulating sterility was expressed as sterility; under low temperature, the genes from reverse thermo-sensitivity was dominant, and the gene regulating sterility was also expressed as sterility. The performance of population segregation was confirmed from the cross type 4 of different thermo-sensitive and reverse thermo-sensitive genic male sterile sister lines. The combination C31 (Z1×F7) showed sterility, fertility and normal fertility at low temperature. The ratooning of sterile plant after stem-cutting was separated to sterility plant and fertile plant. There were 5 permanent male sterile plants, 6 low-temperature sterile and high-temperature fertile plants, 4 low-temperature fertile plants and 7 normal fertile plants, which was consistent with the segregation ratio 1∶1∶1∶1 of 2 pairs of heterozygous genes. This permanent thermo-sensitive genic male sterility controlled by two genes could be inherited and restored, and the permanent sterility could be restored when the thermo-sensitive genic male sterility gene was dominant.【Conclusion】Tianfeng M male sterile line can solve the safety problem in seed production of two-line hybrid rice.]]></description>
<pubDate>2024/1/9 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[JIANG Jianhua, ZHANG Ying, DANG Xiaojing, WANG Dezheng]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>JIANG Jianhua, ZHANG Ying, DANG Xiaojing, WANG Dezheng</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202311003&flag=1]]></guid><cfi:id>6</cfi:id><cfi:read>true</cfi:read></item>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Evaluation on Comprehensive Traits of Different Cigar Tobacco Varieties in Zhanjiang, Guangdong]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202404007&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】The study aims to comprehensively evaluate the ecological adaptability of different cigar varieties and screen cigar varieties suitable for planting in Zhanjiang tobacco areas of Guangdong Province.【Method】Field experiments were carried out on 8 newly introduced cigar varieties to analyze and compare their differences in field growth periods, agronomic traits, natural disease rates, conventional chemical components and sensory quality evaluation. Finally, comprehensive index method was used to evaluate their comprehensive traits. 【Result】 All the eight cigar varieties had a long field growth period, with an average of 141.36 days. The field growth periods of different cigar varieties varied greatly, with a maximum difference of 22 days (133 days for ‘Haiyan 108’ and ‘Haiyan 201’, 155 days for ‘Yunxue 8’). ‘Yunxue 8’ and ‘Haiyan 200’ performed best at agronomic traits, their plant height, maximum leaf width, internodal length and effective leaf number were better than the average of the tested varieties, indicating that these two varieties had strong field growth potential. The incidence of tobacco mosaic virus of ‘Haiyan 200’, ‘Haiyan 101’ and ‘Yunxue 2’ was low, ranging from 5.09% to 6.85%, and no weather fleck occurred, indicating that the disease resistance of the three varieties was strong. ‘Haiyan 200’ and ‘Haiyan 101’had better coordination of conventional chemical components, and their comprehensive scores were higher than the average level, however, the potassium chloride ratio of the two varieties was lower than the suitable range of high-quality tobacco leaves (4-10). In sensory quality evaluation, ‘Haiyan 101’ scored the highest (46.07), which was characterized by slightly sufficient aroma, clean aftertaste, strong sweetness and good burning ability. The results of comprehensive index calculation showed that the scores of eight cigar varieties ranked as follows: ‘Haiyan 200’ ＞ ‘Haiyan 101’ ＞ ‘Yunxue 8’ ＞ ‘Yunxue 2’ ＞ ‘Haiyan 108’ ＞ ‘Haiyan 201’ ＞ ‘Yunxue 3’ ＞ ‘Havana’.【Conclusion】‘Haiyan 200’ and ‘Haiyan 101’ have good comprehensive properties and were suitable for planting in Zhanjiang tobacco areas. It is suggested to further improve the quality of tobacco leaves by optimizing the fertilization scheme as well as drying and fermentation technology.]]></description>
<pubDate>2024/6/7 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[SHU Jiahui1, ZOU Mingmin1, MA Zhuwen1, WU Caiyun2, CHEN Zhenlu3, TAN Yujing2, YU An2, LI Zhangxiao2, LI Jiqin1, PAN Xiaoying1, HUANG Zhenrui1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>SHU Jiahui1, ZOU Mingmin1, MA Zhuwen1, WU Caiyun2, CHEN Zhenlu3, TAN Yujing2, YU An2, LI Zhangxiao2, LI Jiqin1, PAN Xiaoying1, HUANG Zhenrui1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202404007&flag=1]]></guid><cfi:id>5</cfi:id><cfi:read>true</cfi:read></item>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Research Progress of Peanut Aroma Substances]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202404008&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Peanut is an important oil crop in China. Peanut seed itself and its processed products can produce a unique aroma, and its aroma quality is one of the most important indicators to determine the market. Peanut seed can produce different aroma substances through different processing methods, and peanut aroma is composed of a variety of volatile substances, including pyrazines, pyrroles, furans, pyridine, aldehydes, ketones, alcohols, hydrocarbons, aromatic compounds and other compounds, and different volatile substances have different aromas. There are three main sources of aroma substances in peanut: Maillard reaction, fat oxidation and thermal degradation reaction, and degradation reaction of amino and sugars. At present, there are few studies on the biosynthetic pathways of aroma substances in peanut. With the development of science and technology, more and more volatile compounds have been identified. At present, peanut aroma is mainly extracted by headspace solid phase microextraction and detected by gas chromatography-mass spectrometry. The formation of peanut aroma is mainly affected by factors such as genotype, processing mode and processing time, seed water content and other factors. A large number of literatures have shown that cultivation modes affect the accumulation of aroma substances in rice, but there is no report on the effect of different cultivation mode on the accumulation of aroma substances in peanut. At the same time, the use of volatile compounds can also inhibit the pollution of peanut aflatoxin, reduce the economic loss of peanuts, and use volatile substances to distinguish different kinds of vegetable oil. Taking peanut seed as the object, this paper reviwed the composition analysis of peanut aroma substances, the classification of peanut aroma substances, the extraction and analysis methods of peanut aroma substances, the factors affecting the formation of peanut aroma substances and the influence of Aspergillus fl avus pollution by peanut aroma substances, providing theoretical basis for the study on the formation of peanut aroma quality.]]></description>
<pubDate>2024/6/7 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[LI Lin, QIAO Jingxuan, DING Chao, HE Wenjia, ZHENG Yixiong, WAN Xiaorong, BAO Gegen]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LI Lin, QIAO Jingxuan, DING Chao, HE Wenjia, ZHENG Yixiong, WAN Xiaorong, BAO Gegen</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202404008&flag=1]]></guid><cfi:id>4</cfi:id><cfi:read>true</cfi:read></item>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Evaluation of Drought Tolerance and Identification of QTL in Single-segment Substitution Lines of Wild Rice at Seedling Stage]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202403007&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】Drought is one of the main abiotic factors that affect rice productivity. Rice yield can be ensured by screening drought-resistant rice.【Method】Ninety-three single-segment substitution lines (SSSLs) constructed from Oryza. meridionalis and O. glumaepatula and their recipient parents ‘Huajingxian 74’(HJX74) were used as the test materials. And 20% PEG-6000 was adopted to simulate drought conditions to perform drought tolerance tests at the seedling stage. Besides, four growth and development traits (relative seedling height, relative seedling dry weight, relative root dry weight and relative root length) were used as evaluation indicators. The membership function method was utilized to sort SSSLs and screen SSSLs with relevant traits significantly different from HJX74. Based on the QTL identification and additive effect analysis, QTL related to drought tolerance traits at the seedling stage was preliminarily identified.【Result】The analysis of correlation between the four growth and development traits and the average membership function value revealed that they were all extremely significantly positively correlated, and could be used as indicators for identifying and evaluating the drought tolerance in the seedling stage of SSSLs. According to the analysis result of the membership function method, the average membership function value of the tested SSSLs ranged from 0.20 to 0.71, and the average membership function value of HJX74 was 0.54. The average membership function value of 29 SSSLs was greater than that of HJX74. Among them, M124 had the largest membership function value, indicating strong drought tolerance of M124. Through single factor analysis of variance, 7 relative seedling height QTLs (qRSH1-1, qRSH1-2, qRSH2-1, qRSH3-1, qRSH3-2, qRSH5-1, and qRSH6-1) were identified from 8 SSSLs (M78-1, M78-2, M124, M107, M151, M103, M130, M115), which were distributed on Chromosomes 1, 2, 3, 5, and 6. Their additive effect was 0.05-0.06, and the phenotypic contribution rate was 6.97%-9.01%. Three relative root dry weight QTLs (qRRDW10-1, qRRDW11-1, and qRRDW11-2) were identified from three SSSLs (M79, M145, M148), which were distributed on chromosomes 
10 and 11. The additive effect was 0.12-0.20, and the phenotypic contribution rate was 12.51%-19.95%. A relative seedling dry weight QTL (qRSDW5-1) was identified from 2 drought-tolerant SSSLs (M80, X149), and distributed on chromosome 5, with the additive effect of 0.07 and the phenotypic contribution rate of 10.5%.【Conclusion】A total of 13 SSSLs with drought-tolerant QTLs at the seedling stage are screened, laying a solid foundation for further study on fine mapping and cloning.]]></description>
<pubDate>2024/4/30 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[LIAO Bing1，HUANG Xiuyan1，CHEN Ke1，FU Xuelin2，HE Ping1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>LIAO Bing1，HUANG Xiuyan1，CHEN Ke1，FU Xuelin2，HE Ping1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202403007&flag=1]]></guid><cfi:id>3</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Analysis of Differences in Nitrogen Metabolism and Carotenoid Metabolism among Different Varieties of Flue-cured Tobacco]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202403008&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】High-quality flue-cured tobacco varieties are important guarantees for showcasing the quality characteristics of tobacco producing areas. Exploring the differences in nitrogen metabolism and carotenoid metabolism characteristics between high-quality flue-cured tobacco varieties and conventional main varieties during the field growth period in Jiangxi tobacco region, and analyzing the common physiological metabolism characteristics of high-quality flue-cured tobacco varieties can provide theoretical and technical support for in-depth exploration of variety characteristics and optimization of variety matching cultivation techniques. 【Method】The Minyan 312, Minyan 12 with good sensory quality and the conventional variety of Yunyan 87 (CK) were used as materials. The changes in the contents of related substances and gene expression levels in middle leaves of different varieties during key growth periods were analyzed. 【Result】In terms of carotenoid metabolism, the contents of lutein and β-carotene in Minyan 312 and Minyan 12 were 3.27-6.14 mg/g and 0.67-1.59 mg/g respectively during the budding stage to foot leaf mature period, which were significantly lower than those in Yunyan 87. However, the contents of lutein in the middle leaf maturity of the two varieties were 2.31 mg/g and 2.58 mg/g, respectively, which were significantly higher than those in Yunyan 87 (0.17 mg/g and 0.44 mg/g). The peak expression of carotenoid synthesis-related genes mainly occurred in the vigorous growing period to budding stage. The relative expression of PSY and other carotenoid synthesis-related genes in Minyan 312 and Minyan 12 were higher than those in Yunyan 87 before the maturity of waist leaf, with a maximum difference of 2.53. In terms of nitrogen metabolism, the total nitrogen content (1.58%-3.36%) and protein content (7.14%-14.81%) in Minyan 312 and Minyan 12 were significantly lower than those in Yunyan 87 during the budding stage to foot leaf mature period. The expression levels of NR, NIR1 and GS1-5 genes in Minyan 312 and Minyan 12 were higher than those in Yunyan 87 during the vigorous growing period to foot leaf mature period, while the expression levels of GS1-5 genes were lower during the waist leaf mature period. In terms of correlation analysis, there was a significant or extremely significant positive correlation between NIRI, GS1-5, PSY, CRTISO and other genes, lutein and β-carotene.【Conclusion】There was a significant correlation between nitrogen metabolism and carotenoid metabolism. Compared with Yunyan 87, the middle leaves of high-quality flue-cured tobaccos Minyan 312 and Minyan 12 exhibited stronger activity of carotenoid synthesis related genes before maturity and higher lutein content during maturity in terms of carotenoid metabolism. In addition, the Minyan 312 and Minyan 12 had higher nitrogen absorption and assimilation ability before maturity, and had lower nitrogen utilization ability at maturity in terms of nitrogen metabolism.]]></description>
<pubDate>2024/4/30 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[DING Yongliang1, YUAN Jumin1, LI Zhuo1, ZHANG Xiongfeng1, LI Hongxia2, XIA Hao2, CHEN Jiayu2, CHEN Renxiao1]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>DING Yongliang1, YUAN Jumin1, LI Zhuo1, ZHANG Xiongfeng1, LI Hongxia2, XIA Hao2, CHEN Jiayu2, CHEN Renxiao1</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202403008&flag=1]]></guid><cfi:id>2</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Evaluation on High-yield Cross Combination of Ricinus communis L. Suitable for Mechanical Harvest]]></title>
<link><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202401003&flag=1]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[【Objective】A joint evaluation on Ricinus communis cross combinations was conducted to provide a theoretical reference for screening high-yield varieties suitable for mechanical harvest. 【Method】The yield trait, adaptability for mechanical harvest and photosynthetic performance of 30 R. communis cross combinations were jointly evaluated by grey relational analysis, principal component analysis and cluster analysis.【Result】In the grey relational analysis, 6 combinations including N19 (0.768), N7 (0.751), N11 (0.727), N10 (0.717), N6 (0.713) and N13 (0.712) with weighted correlation degree between various combinations and the ideal varieties were screened out. Among which, the former 4 combinaitons had higher weighted correlation degrees than that in Zibi 5 (0.714), and the weighted correlation degrees of the latter 2 were close to that in Zibi 5.Principal analysis results showed that, 10 traits were classified into 3 principal components, namely, plant type factor, yield determining factor and photosynthetic and branching angle factor, with a cumulative contribution rate of 67.07%. Among the 30 combinations, the comprehensive scores of 21 combinations were higher than that of Zibi 5 (-0.699), and only 4 combinations, N18 (2.370), N4 (1.848),N19 (1.742) and N11 (1.019) had comprehensive scores larger than 1, of which N19 was the most prominent with a much higher score than that in other 3 combinations. Cluster analysis revealed that, the 30 combinations could be classified into 4 groups at Euclidean distance value equal to 22. Among them, Group IV members (including N19, N11 and N30) with the best overall performance was most similar to the ideal varieties based on the average performance in each cluster, however, the branching angle (59.10°) was large and still expected to be improved.【Conclusion】Based on the above 3 evaluation results, the comprehensive evaluation avoids the acceptance of redundant germplasm and the loss of elite germplasm. The N19 and N11 with high yield, good plant type and high photosynthetic rate were selected as the optimal Ricinus communis cross combinations, and their comprehensive performances were better than that of Zibi 5, providing a direction for further improvement of varieties.out of varieties.]]></description>
<pubDate>2024/3/8 0:00:00</pubDate>
<category><![CDATA[Crop Cultivation · Genetic Breeding]]></category>
<author><![CDATA[ZUO Jinying, LU Jiannong, YIN Xuegui, HUANG Guanrong, ZHANG Liuqin, LIN Haihong, ZHANG Xingyu, LIU Luzhou]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>ZUO Jinying, LU Jiannong, YIN Xuegui, HUANG Guanrong, ZHANG Liuqin, LIN Haihong, ZHANG Xingyu, LIU Luzhou</atom:name>
</atom:author>
<guid><![CDATA[http://gdnykx.cnjournals.org/gdnykxen/ch/reader/view_abstract.aspx?file_no=202401003&flag=1]]></guid><cfi:id>1</cfi:id><cfi:read>true</cfi:read></item>
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