| 史开奇1，沙吉旦·尕依提1，吾马尔·吾哈甫1，夏诗书2，3，程 平2，李 宏2.引种杂交杨光合特性及综合评价[J].广东农业科学,2018,45(4):70-79 |
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引种杂交杨光合特性及综合评价 |
| Photosynthetic characteristics and comprehensive evaluation of introduced hybrid poplar |
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| DOI：10.16768/j.issn.1004-874X.2018.04.011 |
| 中文关键词: 伊犁地区 杂交杨 隶属函数法 光合特性 |
| 英文关键词: Ili region hybrid poplar membership function method photosynthetic characteristics |
| 基金项目:新疆维吾尔自治区林业发展补助资金（新林科字[2017]26 号） |
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| 中文摘要: |
| 使用Li-6400XT 便携式光合仪对22 个引种杂交杨进行光合参数测定，分析引种杂交杨光合
参数日动态并综合评价其光合能力，筛选出光合能力较强的引种杂交杨，为优良杨树的选育提供科学
参考。结果表明，引种杂交杨净光合速率（Pn）、蒸腾速率（Tr）日变化呈单峰或双峰型曲线，部分品系
存在“光合午休”现象，不同品系Pn、Tr 峰值出现时间有差异；各品系WUE 在早晨8：00 有最高值，18：
00～20：00 上升明显，各品系水分利用效率（WUE）低值出现时间略有差异；各品系光合参数存在极显著
差异，具有不同程度的相关性；综合评价结果显示，LD-3、84-306、LX-2 和108 综合分值较高，具有较强
的光合能力，可在光热资源丰富的伊犁地区推广种植。 |
| 英文摘要: |
| The photosynthetic parameters（ net Photosynthetic rate，transpiration rate and water use efficiency）
of 22 introduced hybrid poplars were measured by using LI-6400XT portable photosynthetic apparatus. The diurnal
dynamics of the photosynthetic parameters of the introduced hybrids poplar were analyzed and their photosynthetic
capacity were comprehensively evaluated. The hybrids poplar with strong photosynthetic capacity were selected to
provide a scientific reference for the breeding. The results showed that the diurnal variation of Pn and Tr of introduced
hybrid poplar presented a single peak or bimodal curve，while some clones had obvious“ midday depression of
photosynthesis” phenomenon and the peak time varied slightly among clones of different Pn and Tr. WUE of all clones
reached the maximum at 8：00 with a sharp rise from 18:00 to 20：00. Additionally，there were slight differences
among the times when the low value of WUE of each clone occurs. Though the photosynthetic parameters of each
clones were significantly different（ p<0.01），there were correlations among the photosynthetic parameters of
varying degrees. Comprehensive evaluation showed that the ones had stronger photosynthetic ability with higher
comprehensive index score of LD-3，84-306，LX-2 and 108. Thus，they could be promoted in Ili region with rich
light and heat resources. |
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