| 朱报著，潘文，张卫华，张方秋，闫菁.粤琼土沉香种源/家系种子变异和早期生长分析[J].广东农业科学,2014,41(23):20-25 |
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粤琼土沉香种源/家系种子变异和早期生长分析 |
| Seed variation and early growth performance of Aquilaria sinensis provenance or family in Guangdong and Hainan |
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| DOI： |
| 中文关键词: 土沉香 种源 家系 种子特性 生长表现 |
| 英文关键词: Aquilaria sinensis provenance family seed characteristics growth performance |
| 基金项目:国家林业局林业公益性行业科研专项（201204303） |
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| 摘要点击次数: 1622 |
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| 中文摘要: |
| 土沉香（Aquilaria sinensis）为生产中药沉香的主要珍贵药用树种。对广东省和海南省土沉香7个种源在广州市天河区开展早期生长测定，结果发现，种子千粒重、种子面积、场圃发芽率、0.5 年苗高、3 年树高和胸径在种源间、家系间的差异均达极显著水平；土沉香种子千粒重平均为182.96 g，种子面积平均为0.86 cm2，场圃发芽率平均为39.09%，0.5 年苗高平均为0.22 m，3年平均树高和平均胸径分别为2.68 m和2.75 cm；土沉香种子千粒重与种子面积、场圃发芽率存在极显著性正相关，与苗高呈正相关。经综合评选，评选出广东电白和海南临高2个优良种源16个优良家系，广东省和海南省入选家系个数分别为7 个和9 个，且其树高和胸径平均选择增益分别为8.5%和20.43%。 |
| 英文摘要: |
| Aquilaria sinensis is a main precious medicinal species in traditional Chinese medicine production. In thisstudy, seven provenances of A. sinensis from Guangdong and Hainan provinces were planted at Tianhe-Guangzhou city foranalyzing their early growth performance. The results showed that there were significant differences in thousand-seed weight, seed size, nursery germination rate, 0.5-year seedling height, 3-year height and 3-year diameter-at-breast height (DBH) among their provenances or families. A. sinensis thousand-seed weight per average was 182.96 g, average seed area was 0.86 cm2, average nursery germination rate was 39.09%, 0.5-year average seed height was 0.22 m, average 3-yearheight and 3-year DBH were 2.68 m and 2.75 cm. The thousand-seed weight, seed size and nursery germination rate of A . sinensis had extremely significant positive correlation, and had positive correlation with height. With comprehensive selection, Uis study identified 2 excellent provenances and 16 excellent families in Dianbai Guangdong and Lingao Hainan,the numbers of selected family were 7 and 9 in Guangdong and Hainan provinces, and their mean selecting gains of height and DBH were 8.5% and 20.43%, respectively. |
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