聚类分析是运用数学工具来研究事物分类的一种方法。国内已有一些学者应用聚类分析研究作物育种中的问题。他们在分析中用聚类分析研究作物数量性状方面的遗传分歧以及评价亲本、为杂交育种提供理论依据等方面作了不少有价值的工作。但是,在整理、归并、分析和研究农作物品种资源时,仅考虑与产量有关的数量性状是不足的,许多定性指标(质量性状)在分类中也起重要 Clustering analysis is a way to use mathematical tools to study things. Some domestic scholars have applied cluster analysis to study crop breeding problems. In the analysis, they used cluster analysis to study the genetic divergence in the quantitative traits of the crop, as well as evaluate the parents and provide the theoretical basis for the hybrid breeding, etc. They made a lot of valuable work. However, in the process of collation, consolidation, analysis and study of crop species resources, it is not enough to consider only quantitative traits related to yield, and many qualitative indicators (quality traits) also play an important role in classification