榆叶梅野生群体表型多样性的研究  

Study on phenotypic diversity of Prunus triloba wild populations

作　　者：张强英[1,2] 张启翔[1,2] 程堂仁[1,2] 

机构地区：[1]北京林业大学园林学院,北京100083 [2]国家花卉工程技术研究中心,北京100083

出　　处：《中南林业科技大学学报》2012年第5期155-160,共6页Journal of Central South University of Forestry & Technology

基　　金：北京市园林绿化局计划项目:主要花灌木新品种选育(ylhh201100112)

摘　　要：对榆叶梅6个野生群体的表型性状进行研究,探讨榆叶梅野生群体间和群体内的表型多样性。方差分析结果表明,榆叶梅野生群体性状在群体间和群体内存在广泛的变异,16个性状在群体间达到极显著或显著水平,6个性状在群体内达到极显著或显著水平。群体内的方差分量大于群体间的,说明群体内变异是榆叶梅野生群体变异的主要来源。聚类分析结果表明,6个野生群体可划分为两类,且表型性状并没有依据地理距离而聚类,群体间表型变异表现为不连续的。主成分分析结果表明前6个主成分的累计贡献率仅达到57.33%,可以代表原始性状的部分信息。The phenotypic charactristics of 6 Prunus triloba wild populations were studied to discuss the phenotypic diversities among and within populations. The results of variance analysis showthat there were significant differences among populations and among individuals within populations. The variation among populations was slightly higher than that within populations, which indicated that the variance within populations was the main part of the phenotypic variation of Prunus triloba wild populations. The results of UPGMA cluster analysis show that the 6 Prunus triloba wild populations could be divided into 2 groups, but the cluster of characters were not based on the geographical distances, which showed the discontinuous phenotypic variances within groups. The results of PCA indicate that the first 6 main factors could be used to replace parts of original characters with the accumulative contribution only up to 57.33%.

关 键 词：榆叶梅 野生群体 表型多样性 

分 类 号：S759.95[农业科学—森林经理学]