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在对华北和东北地区杓兰属(Cypripedium L.)植物种质资源调查基础上,应用数量分类学中的Q型聚类分析法对38份杓兰代表样本进行分类研究,并对20个形态性状进行R型聚类分析和主成分分析。Q型聚类分析将这38份样品在Lq1=0.25水平分为山西杓兰群和其他杓兰群两个类群,在Lq2=0.155水平将其他杓兰群分为3个亚群,结果显示大花杓兰(C.macranthos Sw.)与山西杓兰(C.shanxience S.C.Chen)亲缘关系最远,中间过度类型多为大花杓兰与黄囊杓兰(C.calceolus L.)之间的天然杂交后代。R型聚类分析树系图显示各性状分布较为分散,相互独立。主成分分析表明20个性状特征综合成的9个主成分中前5个主成分的累积贡献率高达80.81%,结合其与性状间的相关性,筛选出影响力大的13个重要性状。
Based on the investigation of plant germplasm resources of Cypripedium L. in North and Northeast China, 38 representative samples of Cypripedium were studied by Q-type cluster analysis based on quantitative taxonomy, and 20 species Characters were analyzed by R-cluster analysis and principal component analysis. Q cluster analysis divided the 38 samples into two groups at the level of Lq1 = 0.25 and the other groups at the level of Lq2 = 0.155, and divided the other groups into three subgroups C. macranthos Sw. Is the most distantly related to C.shanxience SCChen, with the most intermediate type being C. glaucum and C. calceolus L. Natural hybrids offspring. The R-type cluster analysis tree diagram shows that the distribution of each trait is more dispersed and independent. The principal component analysis showed that the cumulative contribution rate of the first five principal components among the nine principal components integrated into the 20 traits was as high as 80.81%. Based on the correlation between the traits and the traits, 13 important traits were screened out.