西北旱区主要优质蛋白玉米自交系的遗传多样性研究

Analysis on Genetic Diversity of QPM Inbred in Northwest Drought Region

采用SSR标记技术对30个已知来源的优质蛋白玉米自交系的遗传背景进行了遗传多样性分析。结果表明,从筛选出的29对有多态性的SSR引物中共检测出141个等位位点,每个位点检测到等位基因3～8个,平均4.86个。SSR标记聚类将这些材料分为4个类群,主坐标分析将其分为8组。2种分类方法所得结果基本一致,主坐标分析更能详细反映30个自交系间的亲缘关系。

In order to provide reliable information for breeding of the main excellent quality protein maize in northwest drought region,we used SSR markers to analyze the genetic diversity of genetic background of 30 excellent quality protein maize inbred lines(the source of inbred lines was known).From the 29 pairs selected for the SSR primer polymorphism,we detected 141 alleles.Each pair of primers could be detected 3-8 alleles.Each locus allele 4.86 on the average.SSR marker clustering analysis divided these mater...