不同小生境缙云黄芩形态变异数量分析

Quantitative analysis of Morphological Diversity Differentiation of Scutellaria Tsinyunensis in Different Microhabitats

运用方差分析、聚类分析及主成分分析等统计分析方法,对缙云山特有植物缙云黄芩(Scutellaria tsinyunensis)在不同小生境下的形态特征进行了研究,结果表明:在研究的36项形态性状中,有77.8%的性状表现出在居群之间差异显著,其中有61.1%的性状差异极显著。聚类分析和主成分分析显示,缙云黄芩的形态特征在整体水平上表现出分化上的无序性,即不同居群的个体常交叉聚在同一个表征群内,但在同一表征群内,同一居群的多数个体常能聚在一起,表明居群之间在形态特征上发生了一定程度的分化,而这种分化还不能清楚地区分不同的居群。

Based on the basic principles of ecology, the morphological characters of 70 individuals of 7 populations from different habitats were studied by means of variance analysis, clustering analysis and principal component analysis. The results showed that the morphological characters of S. tsinyunensis had certain variation within a certain population or a- mong different populations, of which 77. 8% presented significant among populations, and 61. 1% characters even showed extremely significance among populations. By means of clustering analysis and principal component analysis, a somewhat unordered occurred in morphological differentiation of S. tsinyunensis as a whole. Namely, the individuals of different populations often fall into the same cluster, but most individuals within the same population often fall into the same cluster. It could be inferred that certain amounts of morphological differentiation among populations had been occurred, but the degree of the differentiation is not significant enough to distinguish each population from others dearly.