高粱杂交种穗结构性状的分析

ESTIMATING OF GENETIC DISTANCE BETWEEN PARENTS AND FUZZY CLUSTER ANALYSIS IN SORGHUM

摘要:

本试验于1991年在长春市农科院试验田进行。利用7个数量性状测定了高粱19个亲本(9个不育系和8个恢复系)间的遗传距离。以遗传距离为依据,进行模糊聚类分析。结果表明,17个亲本共分为6类。距离较大的不同类群问亲本所组配的杂交组合优势较强。因此,选用距离较大的不同数群的亲本组配杂交种,可提高优良组合出现的频率。同时也看出,模糊聚类分析方法更为合理,其结果与实际较为相符。

Abstract:

Genetic distance between parents were estimataed using the data of seven quantitative characters of senventeen sorghum parents. Fuzzy cluster analysis was carried out based on the genetic distance. The results showed thet seventeen parents were fallen into six groups. Genetic distance and the derived groups of parents provided a basis for selection of hybrid parents. It was discoverd that the method of fuzzy cluster analysis seemed to be more valid.