我国红锥天然群体的遗传多样性和遗传结构  

Genetic Diversity and Genetic Structure in Natural Populations of Castanopsis hystrix from Its Main Distribution in China

作　　者：徐斌[1] 张方秋[1] 潘文[1] 刘有成 

机构地区：[1]广东省林业科学研究院,广州510520 [2]广东省国营龙眼洞林场,广州510520

出　　处：《林业科学》2013年第10期162-166,共5页Scientia Silvae Sinicae

基　　金：国家林业公益性行业科研专项基金(200904013);广东省林业科技创新专项资金项目(2012KJCX003)

摘　　要：红锥（Castanopsis hystrix）是壳斗科（Fagaceae）锥属（Castanopsis）的常绿乔木,天然分布于我国广东、广西、云南、海南以及福建南部（中国树木志编委,1981;《广东森林》编辑委员会,1990）,是我国华南地区一个重要的生态公益林树种和珍贵用材树种。红锥为二倍体,2n=2x=24（Http：//www.tropicos.org/Name/）,单性花、雌雄同株。The genetic diversity and genetic structure of 15 natural populations of Castanopsis hystrix in China were analyzed using ISSR markers. Results showed that the genetic diversity of C. hystrix was abundant,with percentage of polymorphic bands（ PPB） and Shannon＇s phenotypic diversity index（ H0） being 94. 89% and 0. 387 3 at the species level,76. 93% and 0. 305 0 at the populations level,respectively. There were significant genetic differentiation among and within populations,and 11. 25% of genetic variation existed among populations. The Mantel test showed that the geographic and genetic distances were not significantly correlated to each other. The present study provided a scientific basis for the conservation and utilization of genetic resources of C. hystrix.

关 键 词：红锥 ISSR 遗传多样性 遗传结构 

分 类 号：S718.46[农业科学—林学]