摘要
利用SSR分子标记技术研究了我国喀斯特高海拔山区主要玉米自交系的遗传多样性,初步进行了杂种优势群划分。37对引物在供试材料中共检测出128个等位基因变异,每对引物检测等位基因2-6个,平均为3.48个,平均多态性信息量为0.506,33个自交系之间的遗传相似系数变化范围为0.476-0.876,平均为0.607。UPGMA聚类分析结果表明,可将我国喀斯特高海拔山区玉米地方自交系划分为6个类群。
The technique of SSR markers was used to study the genetic diversity of the main inbred lines of maize in the karst mountainous regions with high elevation. A total of 128 polymorphic bands were detected by 37 primers selected, averaging 3.48 alleles detected per primer. The mean content of polymorphic information was 0.506. Clustering analysis made with UPGMA ( unweighed pair-group method using arithmetic average) classified the maize inbred lines in the karst mountainous regions with high elevation of China into 6 groups.
出处
《西南农业大学学报(自然科学版)》
CSCD
北大核心
2006年第1期17-21,共5页
Journal of Southwest Agricultural University
基金
贵州省"十五"重大攻关资助项目[2001(1104号)]和(2004NGY023)
关键词
玉米自交系
SSR标记
喀斯特高海拔山区
遗传多样性
Maize inbred line
SSR marker lKarst mountainous regions with high elevation
Genetic diversity