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陕西实生板栗居群遗传多样性研究
引用本文:秦岭,刘德兵,等.陕西实生板栗居群遗传多样性研究[J].西北植物学报,2002,22(4):970-974.
作者姓名:秦岭  刘德兵
作者单位:1. 北京农学院,北京朱辛庄,102206
2. 西北农林科技大学,陕西杨陵,712100
基金项目:北京科技新星计划资助项目 ( 951872 2 0 0 )
摘    要:利用超薄平板聚丙烯酰胺等电聚焦技术对陕西板栗4个实生居群,8个酶系统的20个位点进行了遗传多样性及遗传结构分析,结果表明:4个居群中以宝鸡居群遗传多样性最高,其P为80.0%,Ho,He分别为0.478和0.343,4个居群的居群遗传分化度Gst为6.2%,平均总遗传多样性为0.3372,总遗传多样性的93.8%属于居群内的遗传变异,聚类分析结果表明,以秦岭为界可以分为秦岭以南与秦岭以北2个略有差异的板栗自然亚分布区。

关 键 词:陕西  实生板栗  居群  遗传多样性
文章编号:1000-4025(2002)04-0970-05
修稿时间:2001年6月19日

Study on the genetic diversity of natural chestnut of Shaanxi
QIN Ling,LIU De bing,FAN Chong hui.Study on the genetic diversity of natural chestnut of Shaanxi[J].Acta Botanica Boreali-Occidentalia Sinica,2002,22(4):970-974.
Authors:QIN Ling  LIU De bing  FAN Chong hui
Institution:QIN Ling 1,LIU De bing 2,FAN Chong hui 1
Abstract:Genetic variability and genetic structure of 4 national chestnut populations in Shaanxi of China was investigated using isoelectric focusing in thin layer polyarcylamide slab gels at 20 loci coding for 8 enzyme systems.The result showed that the highest genetic diversity of 4 populations is Bao Ji.The percentage of polymorphic loci (P) of it was 80.0%.The direct count hetrozygosity(Ho) and the expected heterozygosity(He) were 0.478 and 0.343 respectively.Genetic differentiation in 4 populations was 6.2%.The total average diversity was 0.3372,about 93.8% of genetic variation was attributed within populations.The result of UPGAMA showed that the southern of Qinling and the northern of Qinling can be seemed as two divided national region with appreciably difference of chestnut.
Keywords:chestnut  population  alloyme  genetic diversity
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