【摘要】 在云南和贵州调查了滇楸9个群体的结实特性和果实的8个表型性状,采用巢式设计的方差分析、变异系数、相关及聚类分析等进行表型性状的遗传多样性分析。结果表明:果实的8个性状在种群间、种群内差异均达到极显著水平(p<0.01),表型性状的平均变异系数为31.03%,变化幅度为24.53%～39.28%;群体间表型分化系数为22.81%(10.91%～36.34%),种群内变异达到77.19%,明显大于种群间的变异22.81%。通过果实表型性状的聚类分析,将9个种群划分为3大类,表型性状没有依据种群的距离进行分类,群体间的表型变异表现为不连续。更多还原

【Abstract】 The phenotypes variation of 9 populations of Catalpa fargesii f.duclouxii,8 traits were investigated and the phenotype diversities within and inter-popula-tions were analyzed by adopting the methods of nested analysis of variance,coefficient of variation,correlation analysis and cluster analysis.The results showed that fruit traits among populations had reached a very significant level(p<0.01) differences within populations.The CV of phenotypic traits of the average was 31.03%,with a change in the range of 24.53% to 39.28%.Phenotypic differentiation coefficient between populations(10.91% to 36.34%) was 22.81%.The intra-population phenotypic differentiation(77.19%) was significantly higher than the inter-population’s(22.81%).According to the UPGMA cluster analysis of the populations of C.fargesii f.duclouxii could be divided into three groups.These cluster results were not due to geographic distancesa and Phenotypic variation between groups showed discontinuous.更多还原