四川林业科技2011，Vol.32Issue(6)：19-27,9.
川渝地区乌桕天然群体种子性状表型多样性研究
A Study of Phenotypic Diversity of Seed Character in Natural Populations of Sapium sebiferum in Sichuan and Chongqing Areas
摘要
Abstract
Researches were conducted on the inter-population and intra-population phenotypic diversity of nine representative natural Sapium sebiferum populations in Sichuan and Chongqing areas.Every group of 30 families（individuals） were chosen as the experiment materials,and statistical analysis methods such as variance analysis,multiple comparison,variation coefficient comparison,repeatability comparison,correlation analysis and cluster analysis were adopted to explore the phenotypic diversity of sixteen seed phenotypic character of Sapium sebiferum.The results showed that the intraspecific seed phenotypic character of inter-population and intra-population Sapium sebiferum had profuse genetic variation.The qualitative character of seeds was more stable than the shape index.The variation coefficient of different seed character ranged from 6.84% to 39.54%,with the average of 16.78%.The repeatability of each seed character ranged from 0.31 to 0.98,with the average of 0.61.The inter-population phenotypic differentiation coefficient ranged from 6.71% to 42.72%,with the average of 25.47%.The intra-population phenotypic differentiation（74.53%） was significantly higher than the inter-population＇s（25.47%）.Most of the sixteen seed phenotypic characters were significantly correlated.The seed phenotypic variation of intra-population Sapium sebiferum presented one-way variation pattern with latitude in space distribution,and the variation was mainly controlled by low temperatures.According to UPGMA cluster analysis by inter-population Euclidean distance,the nine populations of Sapium sebiferum could be classified into four types.关键词
乌桕/天然群体/种实性状/表型变异Key words
Sapium sebiferum/Natural population/Seed traits/Morphological variation分类
农业科技引用本文复制引用
冯毅,罗建勋,杜波,辜云杰,王红莉,向青..川渝地区乌桕天然群体种子性状表型多样性研究[J].四川林业科技,2011,32(6):19-27,9.基金项目
四川省植物资源共享平台建设科技条件专项 （）
