不同杏品种的多个数量性状的分析和综合评价

The Analysis and Comprehensive Valuation on Many Quantitative Characters of Different Apricots

对48个不同杏品种的干径、二次分枝数、南北冠幅、叶面积、单果重、叶柄长、核重、仁重、壳厚、果实体积等10个数量性状进行主成分分析,从而得出5个主成分。结果表明:果实生长指标、营养生长指标、二次分枝指标、冠幅指标等的累积方差贡献率可达到87%以上,可以反映10个相关性状的主要信息,并根据综合主成分值为48个杏品种排名,排名结果与实际的表现相一致。根据计算出的主成分值,48个杏品种可聚为四大类:营养生长水平中等、果大小中等类型;营养生长水平高、无果或小果类型;果大、营养生长水平良好类型;营养生长水平良好、果大小中等类型。

This paper made principal component analysis on the ten quantitative characters：stem diameter,secondary branch numbers,canopy widths from North to South,single fruit weight,leaf eara,petiole length,nucleus weight,kernel weight,hull thick,fruit volume and got 5 main component.The results showed that the contribution rate of cumulative variance about the index of fruit growth,vegetative growth,secondary branches and canopy widths could reach 87%,could reflect the main information.This paper ranked the 48 kinds of apricot according to the numbers of comprehensive principal component,it was match to the real condition in the locality.The paper divided the 48 kinds of apricot to 4 clusters according to the numbers of comprehensive principal component：medium fruit,medium vegetative growth;small fruit or no fruit,excellent vegetative growth;big fruit,good vegetative growth;medium fruit,good vegetative growth.