文冠果数量性状的主成分分析及聚类分析研究  

Principal Component Analysis and Cluster Analysis of Quantitative Characters of Xanthoceras sorbifolia

作　　者：郭军战[1] 张敏[1] 费昭雪[1] 张玲玲[1] 姜晓丹[1] 杨梅[1] 

机构地区：[1]西北农林科技大学林学院,陕西杨陵712100

出　　处：《西北林学院学报》2012年第2期66-69,共4页Journal of Northwest Forestry University

基　　金：陕西省攻关项目"能源植物文冠果良种选育"研究(K331021003)

摘　　要：应用DPS统计软件,对文冠果12个数量性状进行了主成分分析和聚类分析。结果表明:前5个主成分的累积贡献率达70.26%,根据各性状对主成分影响作用大小及主要指标组合,将12个生物学性状分为5类,分别称之为树形因子、叶形因子、果形因子、花序因子和综合因子。根据聚类分析结果,将12个数量性状聚为6大类。2种分析共同揭示了这几类因子对文冠果的作用。Principal component analysis and cluster analysis were conducted on 12 quantitative characters of Xanthoceras sorbifolia by using the statistica1 software DPS.The results indicated that the additive contributing rates of the first five principal components amounted to 70.26%.According to the effect of each character on principal component and the composition of main indices,12 biological characters could be divided into 5 groups： tree form,leaf form,fruit shape,inflorescence,and comprehensive factors.According to the result in cluster analysis,the 12 quantitative characters were divided into 6 groups.The two analyses revealed the influences of these factors on the biology of X.sorbifolia.

关 键 词：文冠果 主成分分析 聚类分析 数量性状 

分 类 号：S718.46[农业科学—林学]