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| 鼎湖血桐种群生物学及遗传多样性初步研究 | |
| 引用本文： | 肖 炜,王峥峰,曹洪麟,叶万辉,黄国敏. 鼎湖血桐种群生物学及遗传多样性初步研究[J]. 广西植物, 2010, 30(1): 70-74 |
| 作者姓名： | 肖 炜 王峥峰 曹洪麟 叶万辉 黄国敏 |
| 作者单位： | 中国科学院,华南植物园,广州,510650;中国科学院,研究生院,北京,100049;中国科学院,华南植物园,广州,510650 |
| 基金项目： | 中国科学院知识创新工程重大项目(KZCX2-YW-430);;国家科技支撑计划(2008BAC39B02)~~ |
| 摘 要： | 采用点格局分析、径级结构分析以及微卫星筛选等方法,对鼎湖山保护区20hm2永久样地中的鼎湖血桐进行了种群生物学及遗传多样性研究。结果表明:鼎湖血桐是一种r-对策型阳生植物,种群年龄结构呈金字塔型;植株受光照不足的胁迫,种群大部分个体聚集分布于光照充足的林窗中;通过磁珠富集法筛选出鼎湖血桐特异性微卫星引物13对,其中2对具备多态性,多态百分率为15.4%,多态信息含量在0～0.3734之间,平均期望杂合度为0.0756,远低于同属其它植物。研究表明鼎湖血桐对环境变化的适应范围较窄,遗传多样性较低,应对其种质资源进行多样性评估与保护。 |
| 关 键 词： | 鼎湖血桐 点格局分析 径级结构分析 微卫星 r-对策 阳生植物 |
Population biology and genetic diversity of Macaranga sampsonii |
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| XIAO Wei,WANG Zheng-Feng,CAO Hong-Lin,YE Wan-Hui,HUANG Guo-Min. Population biology and genetic diversity of Macaranga sampsonii[J]. Guihaia, 2010, 30(1): 70-74 | |
| Authors: | XIAO Wei WANG Zheng-Feng CAO Hong-Lin YE Wan-Hui HUANG Guo-Min |
| Affiliation: | 1.South China Botanical Garden;the Chinese Academy of Sciences;Guangzhou 510650;China;2.Graduate School of the Chinese Academy of Sciences;Beijing 100049;China |
| Abstract: | An analysis of population biology and genetic diversity of Macaranga sampsonii was taken in DHS-20-hm2 permanent plots,which locates on the Dinghushan natural reserve. By use of point pattern analysis and DBH-class structure analysis,it was concluded that M.sampsonii was a light-dependent egy,whose population age structure was approximately pyramid-like. The population habitat was restricted in the canopy gaps because of sunlight deficiency stress. Thirteen microsatellite loci were isolated by methods of ma... |
| Keywords: | Macaranga sampsonii Points pattern analysis DBH-class structure analysis microsatellite r-strategy light-dependent plant |
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