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不同尺度下野大豆种群的遗传分化
引用本文:府宇雷,钱吉,马玉虹,李军,郑师章.不同尺度下野大豆种群的遗传分化[J].生态学报,2002,22(2):176-184.
作者姓名:府宇雷  钱吉  马玉虹  李军  郑师章
作者单位:复旦大学生命科学学院环境与资源生物系,上海,200433
基金项目:国家自然科学基金资助项目 ( 395 0 0 0 2 2 )
摘    要:为了阐明不同尺度范围内野大豆种群的遗传分化情况,应用随机扩增多态性DNA(RAPD)方法,分别对我国5个纬度8个不同地点的野大豆(Glycine soja)种群及浙江金华地区5个野大豆种群,进行了分子生态学研究。根据RAPD数据计算相似系数及遗传距离并进行聚类分析,发现无论是不同纬度野大豆种群还是金华地区野大豆小种群均存在较高的遗传变异,且不同纬度野大豆种群间的遗传变异与地理纬度有一定正相关。在对金华地区野大豆种群遗传多样怀的研究,利用Shannon指数估算了5个野大豆种群的遗传多样性,发现大部分的遗传变异存在于野大豆种群间(78.5%),只有少部分的遗传变异存在于种群内。本就此探讨了不同尺度下野大豆种群的遗传多样性与环境因子的关系,并对其成因及维持机制进行了讨论。

关 键 词:尺度  种群  遗传分化  野大豆  RAPD  遗传多样性  Shannon指数  遗传距离
文章编号:1000-0933(2002)02-0176-09
收稿时间:2000/2/10 0:00:00
修稿时间:2000年2月10日

Genetic Differentiation Research on Populations of Wild Soybeans in Different Scales
FU Yulei,QIAN Ji,MA Yuhong,LI Jun and ZHENG Shizhang.Genetic Differentiation Research on Populations of Wild Soybeans in Different Scales[J].Acta Ecologica Sinica,2002,22(2):176-184.
Authors:FU Yulei  QIAN Ji  MA Yuhong  LI Jun and ZHENG Shizhang
Institution:Department of Environment and Resource Biology; School of Life Sciences; Fudan University; Shanghai; China
Abstract:Random amplified polymorphic DNA (RAPD) analysis was applied to eight populations of wild soybeans (Glycine soja ) from five different latitudes and five populations within Jinhua, Zhejiang Province respectively. Cluster analysis based on genetic distance generated from the RAPD data showed that there were high genetic variations among G. soja populations from different latitude and within Jinhua area. There were some evidences showing noticeable correlation existed between the variations and the geographical latitude. Shannon phenotypic diversity index indicated that 78.5% of the molecular variation existed among populations. The study implied that the variation of wild soybean were correlative to the environment gradient in a large range, but were determined by random genetic drift in a small area.
Keywords:wild soybean  Glycine soja  RAPD  genetic diversity  Shannon index  genetic distance
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