文献类型：期刊文献

中文题名：毛红椿群体遗传结构的SSR分析

英文题名：Study on Population Genetic Structure in Toona ciliata var. pubescens with SSR

作者：刘军[1] 陈益泰[1] 姜景民[1] 何贵平[1] 余国民[2]

第一作者：刘军

机构：[1]中国林业科学研究院亚热带林业研究所,浙江富阳311400;[2]浙江省龙泉市林业科学研究所,浙江龙泉323700

年份：2009

卷号：22

期号：1

起止页码：37-41

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：中国林业科学研究院院所基金(RISF6808);浙江省重大科技专项(2008C02004-2)

语种：中文

中文关键词：毛红椿;SSR;分子标记;遗传结构

外文关键词：Toona ciliata var. pubescens; simple sequence repeat （SSR） ; markers; genetic structure

分类号：Q943

摘要：利用SSR分子标记对分布在我国的7个毛红椿群体进行了遗传结构研究。结果表明:毛红椿群体具有较低水平的遗传变异;毛红椿群体的等位基因的平均数为6.1,有效等位基因数平均为2.7,平均期望杂合度为0.600 6;毛红椿群体遗传分化系数(FST)平均值为0.185 4,在FST值的基础上估算毛红椿群体间的基因流(Nm)为1.098 3。采用平均距离方法(UPGMA)对7个群体进行了聚类,对各群体遗传距离与地理距离的相关分析表明:群体间遗传距离与地理距离显著相关。分析了毛红椿濒危的原因,并提出了保护策略。
Population genetic structure of seven natural populations of Toona ciliata var. pubescens was studied with simple sequence repeat （SSR） markers. The results showed that a low level genetic diversity was detected in the populations of T. ciliata var. pubescens. Average number of alleles and effective number of alleles （Ne ） were 6.1 and 2.7 respectively. The mean expected heterozygosity was 0. 600 6. The major of genetic genetic variation occurred within populations, which could be concluded from the coefficient of genetic differentiation （FST = 0. 185 4）. The level of gene flow （Nm） was 1. 098 3. Dendrogram based Nei＇s （1978） genetic distance was analyzed with UPGMA. Significant correlation was found between geographical distance and genetic distance. The reasons that result in endangered status were analyzed, and some conservation strategies were put forward.