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| Correlation and Principal Component Analyses on Yield Traits of Varieties with Different Ripe Period in Phaseolus vulgaris L.var.chinensis Hort. |
| HU Guo-fu1,2，LI Feng-lan1，LI Cheng-yan1,LI He-chun1，YIN Zhi1，GU Yue-jiao1，ZHAN Yun2* |
| 1Life Science College of Northeast Agricultural University,Harbin 150030,Heilongjiang,China；2Horticulture Branch,Heilongjiang Academy of Agricultural Sciences,Harbin 150069,Heilongjiang,China |
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Abstract 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.
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Received: 23 October 2009
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Corresponding Authors:
ZHAN Yun
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