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本文应用主成分分析法对湖北省 2 0 1份玉米品种资源的 2 8个性状进行分析 ,结果表明 ,前 7个主成分对变异的累计贡献率达 79 5 % ,以前 7个主成分为综合指标进行系统聚类 ,在遗传距离D2 =1 5 0水平上聚成 7大类 ;不同类群间的性状具有明显差异 ,而类群内特征相似 ;其中Ⅲ、Ⅴ、Ⅵ类为综合性状较好的种质类群
In this paper, principal component analysis was used to analyze the 28 traits of 210 maize varieties in Hubei province. The results showed that the cumulative contribution rate of the first seven principal components to the variation was 79.5%. The former seven principal components were comprehensive The results showed that there was a significant difference in the traits between different groups and similar characteristics in the groups. Among them, Ⅲ, Ⅴ and Ⅵ were better in comprehensive traits Germplasm groups