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本研究以25份国外蓖麻种质资源为材料,对11个主要农艺性状进行相关及聚类分析。结果表明:一级分枝穗长和一级分枝蒴果数的变异系数(CV)最大,分别为89.2%和94.1%;百粒重的变异系数最小,为20.4%。通过相关性分析结果表明对蓖麻产量贡献最大的农艺性状是单株总蒴果数,其次是单株有效穗、百粒重以及一级分枝蒴果数;基于各种质间性状的遗传差异,在距离为5时,把25份蓖麻聚类并划分为6大类群,可为杂交育种根据不同类别的特点利用亲本提供依据。
In this study, 25 foreign castor germplasm resources as the material, the 11 major agronomic traits related and cluster analysis. The results showed that the coefficient of variation (CV) of the first-order branch length and the first-order branch capsule number were the highest, which were 89.2% and 94.1% respectively; the coefficient of variation of the 100-grain weight was the smallest, which was 20.4%. According to the results of correlation analysis, the agronomic traits that contributed the most to castor production were the total number of bolls per plant, followed by the effective panicles per panicle, the 100-kernel weight and the number of first-order branching capsules. Based on the genetic differences among various quality traits, At a distance of 5, 25 parts of castor were clustered and divided into 6 groups, which could provide the basis for crossbreeding to utilize parents according to different types of characteristics.