Genetic Analysis and Preliminary Mapping of a Highly Male-Sterile Gene in Foxtail Millet(Setaria italica L.Beauv.) Using SSR Markers  

作　　者：WANG Jun WANG Zhi-lan YANG Hui-qing YUAN Feng GUO Er-hu TIAN Gang AN Yuan-huai LI Hui-xia WANG Yu-wen DIAO Xian-min GUO Ping-yi 

机构地区：[1]College of Agriculture,Shanxi Agricultural University [2]Millet Research Institute,Shanxi Academy of Agricultural Sciences [3]Institute of Crop Sciences,Chinese Academy of Agricultural Sciences

出　　处：《Journal of Integrative Agriculture》2013年第12期2143-2148,共6页农业科学学报（英文版）

基　　金：supported by the Postdoctoral Management Committee,China(92948);the Natural Science Foundation of Shanxi Province,China(2012011032-1);the Chinese Agricultural Research System(CARS-07)

摘　　要：Breeding of male-sterile lines has become the mainstream for the heterosis utilization in foxtail millet,but the genetic basis of most male-sterile lines used for the hybrid is still an area to be elucidated.In this study,a highly male-sterile line Gao146A was investigated.Genetic analysis indicated that the highly male-sterile phenotype was controlled by a single recessive gene a single recessive gene.Using F 2 population derived from cross Gao146A/K103,one gene controlling the highly male- sterility,tentatively named as ms1,which linked to SSR marker b234 with genetic distance of 16.7 cM,was mapped on the chromosome VI.These results not only laid the foundation for fine mapping of this highly male-sterile gene,but also helped to accelerate the improvement of highly male-sterile lines by using molecular marker assisted breeding method.Breeding of male-sterile lines has become the mainstream for the heterosis utilization in foxtail millet,but the genetic basis of most male-sterile lines used for the hybrid is still an area to be elucidated.In this study,a highly male-sterile line Gao146A was investigated.Genetic analysis indicated that the highly male-sterile phenotype was controlled by a single recessive gene a single recessive gene.Using F 2 population derived from cross Gao146A/K103,one gene controlling the highly male- sterility,tentatively named as ms1,which linked to SSR marker b234 with genetic distance of 16.7 cM,was mapped on the chromosome VI.These results not only laid the foundation for fine mapping of this highly male-sterile gene,but also helped to accelerate the improvement of highly male-sterile lines by using molecular marker assisted breeding method.

关 键 词：foxtail millet（Setaria italic L.Beauv.） highly male-sterility gene mapping SSR marker 

分 类 号：S515[农业科学—作物学]