应用分子标记辅助选择培育抗稻白叶枯病光敏核不育系3418S  

Breeding of the Photo-period-sensitive Genetic Male sterile Line ‘3418S’ Resistant to Bacterial bright in Rice by Molecular Marker assisted Selection

作　　者：罗彦长[1] 王守海[1] 李成荃[1] 王德正[1] 吴爽[1] 杜士云[1] 

机构地区：[1]安徽省农业科学院水稻研究所,安徽合肥230031

出　　处：《作物学报》2003年第3期402-407,共6页Acta Agronomica Sinica

基　　金：国家 8 63计划项目 ( 2 0 0 1AA2 110 61-2及 2 0 0 1AA2 11171);安徽省自然科学基金项目 ( 990 1111)

摘　　要：分子标记辅助选择 (MAS)因其对目标基因的快速准确选择为回交育种提供有效工具。本研究以回交转育为基础 ,逐代用分子标记检测导入广谱抗白叶枯病基因 X a2 1,在保持光敏核不育系 3418S原有优良性状和稳定育性的基础上 ,增强其抗白叶枯病的能力。育成抗白叶枯病的籼型光敏核不育系 3418S。其抗性达到了 IRBB2 1的抗性水平 ,且保持了 3418S的优良经济性状和明显的光敏核不育特性。Molecular marker assisted selection(MAS) can provide a rapid, accurate, and efficient tool for selecting target genes in back cross breeding. This study is to improve resistance to bacterial blight(BB) in photo period sensitive genetic male sterile(PGMS) line 3418S of hybrid rice by introducing Xa21 gene with the broad spectrum resistance to BB and using MAS successively in the process of back cross. The indica PGMS line ‘3418S( Xa 21)' with BB resistance has been developed. It was similar in BB resistance to the donor IRBB21(carrying Xa21 ) and maintained the good traits and obvious male sterility of the acceptor ‘3418S'.

关 键 词：分子标记辅助选择 培育 抗稻白叶枯病 光敏核不育系3418S 水稻 

分 类 号：S511.034[农业科学—作物学]