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|本期目录/Table of Contents|

福建地区小叶买麻藤遗传多样性ISSR分析

《广西植物》[ISSN:1000-3142/CN:45-1134/Q]

期数:
2010年05期
页码:
601-607
栏目:
系统与演化植物学
出版日期:
2010-09-15

文章信息/Info

Title:
Genetic diversity of Gnetum parvifolium of Fujian by ISSR Markers
作者:
黄姝博1 胡永红2 吴 冬1 田 旗2 李宏庆1
1.华东师范大学 生命科学学院, 上海 200062; 2.上海植物园, 上海 200231
Author(s):
HUANG ShuBo1 HU YongHong2 WU Dong1 TIAN Qi2 LI HongQing1
1.School of Life Science, East China Normal University, Shanghai 200062, China; 2.Shanghai Botanical Garden, Shanghai 200231, China
关键词:
小叶买麻藤 遗传多样性 遗传结构 种群退化
Keywords:
Gnetum parvifolium genetic diversity genetic structure population degradation
分类号:
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DOI:
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文献标识码:
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摘要:
采用13条ISSR引物对福建地区小叶买麻藤11个种群共211个样本进行了种群遗传多样性检测。结果表明:(1)小叶买麻藤在物种水平上遗传多样性较高而在种群水平上较低,揭示该物种具有较强的生存、适应、发展潜力,但其种群遗传多样性已经受到生境片段化及人为活动的影响;(2)小叶买麻藤的遗传分化在裸子植物中处于中等水平,选择和基因流对种群遗传分化的作用大于遗传漂变的作用;(3)小叶买麻藤种群退化主要受人类活动影响,影响的时间较短,尚未表现出种群遗传结构的改变。
Abstract:
Thirteen ISSR primers were selected to reveal the population genetic diversity of Gnetum parvifolium in Fujian. 211 samples across 11 populations were examined. The results showed that:(1)G.parvifolium exhibited comparatively high genetic diversity at species level while comparatively low at population level,indicating that this species had a strong potential for survival,adaptation and expansion,but its population genetic diversity had been effected by habitat fragmentation and human activity;(2)the genetic differentiation of G.parvifolium was among the moderate level of gymnosperm,which was mainly caused by selection pressure and gene flow instead of genetic drift;(3)human activities contributed to the population degradation of G.parvifolium,but this degradation had little detectable effect on the genetic structure of the target species due to limited impactive time.

参考文献/References

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备注/Memo

备注/Memo:
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更新日期/Last Update: 2010-09-01