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当前位置: 首页 > 文章 > 湖南白檀居群形态多样性及与环境的相关性 植物遗传资源学报 2015,16 (1) 80-86
Position: Home > Articles > Phenotypic Diversity and Environment Relations in Symplocos paniculata of Hunan Journal of Plant Genetic Resources 2015,16 (1) 80-86

湖南白檀居群形态多样性及与环境的相关性

作  者：
杨艳;刘强;尹翔;陈景震;蒋丽娟
单  位：
中南林业科技大学
关键词：
白檀;居群;形态多样性
摘  要：
为了解白檀在湖南地区不同环境的适应性及遗传变化程度,对湖南地区6个白檀天然居群的189个个体的11个表型性状进行形态遗传多样性分析。结果表明,11个表型性状均具有丰富的遗传多样性(H'=1.389),居群间的平均方差分量为52.60%,居群内的平均方差分量为37.03%,说明在白檀形态性状多样性分布上是居群间多样性程度大于居群内,即居群间的形态变异是白檀形态变异的主要来源。聚类分析结果表明,6个居群的表型性状并没有严格依地理距离聚类,主成分与相关分析结果显示在11个表型中树型因子是主要形态变异因子,年降雨量与树型因子呈显著正相关,其他表型变异受遗传的影响可能大于受环境的影响。
译  名：
Phenotypic Diversity and Environment Relations in Symplocos paniculata of Hunan
作  者：
YANG Yan;LIU Qiang;YIN Xiang;CHEN Jing-zhen;JIANG Li-juan;Central South University of Forestry & Technology;Forestry Academy of Hunan;
关键词：
Symplocos paniculata;;population accessions;;phenotypic diversity
摘  要：
In order to investigate variational degree and adaptability of different habitats of Symplocos paniculata in Hunan province,the phenotypic diversity of 6 natural populations of Symplocos paniculata were analyzed based on 11 phenotypic traits of 189 individuals. The results showed that there was abundant genetic diversity(H' =1. 389) in the 11 phenotypic traits. The average variance component among population was 52. 60%,while within population was 37. 03%,indicating that the phenotypic variation among populations was greater than within populations,therefore the variation among populations was the main source of phenotypic variation. The cluster analysis showed 6 populations were not clustered according to geographic distances,the principal component and correlation analysis of the 11 phenotypic traits indicated that the factors of tree shape were the main resources accounting for phenotypic variations,which were significantly correlated with annual precipitation while the other phenotypic traits might be influenced by genetic variation greater than environment factors.

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