不同熟期菜豆(油豆角)产量性状的相关性和主成分分析

Correlation and Principal Component Analyses on Yield Traits of Varieties with Different Ripe Period in Phaseolus vulgaris L. var. chinensis Hort

对东北地区特色菜豆——油豆角的产量性状进行相关性分析和主成分分析。在相关性分析中,早熟品种呈显著和极显著相关的性状有17对;晚熟品种呈显著和极显著相关的性状有9对,两类熟性品种只有4对性状同时具有显著相关性。在主成分分析中,二者各提取4个主成分,其特征值均大于1,可分别解释83.612%和84.293%的方差;在第1主成分中,早熟和晚熟品种的荚宽、荚厚、单株产量、嫩荚质量和荚长等性状的权重系数均较大,是构成油豆角产量的主导因子,其他3个主成分分别有偏重不同农艺性状的贡献值。

In this paper,P.vulgaris L.var.chinensis Hort.was analyzed through statistical method by correlation and principal component analyses.The result shows that there are comparatively large differences between early maturing and late maturing varieties.The results of correlation analysis shows that there are 17 couples of traits have significant or very significant correlation value in early maturing varieties,9 couples of traits have significant or very significant correlation value in late maturing varieties,and only 4 couples of traits have significant correlation value among these 2 types of varieties.The result of principal component analysis shows that there are 4 principal components among early maturing and late maturing varieties,whose characteristic values exceed 1.This can be explained variance（r=83.612 %、r=84.293 %）.In the first principal component,the trait of pod width,pod thickness,yield per plant,fresh pod weight and pod length have bigger weight coefficient in early maturing and late maturing varieties,which are major output factors of P.vulgaris L.var.chinensis Hort.The other 3 principal components have different contribution for agronomic traits.