特矮稻ED基因的遗传定位和分析  

Characterization and Genetic Mapping of ED from a Novel Dwarfing Rice(Oryza sativa L.)

作　　者：梅进[1] 杨远柱[2] 林建中[1] 胡小淳[2] 周波[1] 赵小英[1] 符辰建[2] 黄星群[1] 唐冬英[1] 刘选明[1] 

机构地区：[1]湖南大学生命科学与技术研究院,生物能源与材料研究中心,长沙410082 [2]湖南亚华种业科学研究院,长沙410119

出　　处：《植物生理学通讯》2009年第3期239-243,共5页Plant Physiology Communications

基　　金：高等学校国家"985工程"科技创新平台项目(20005)

摘　　要：赤霉素(GA3)鉴定表明,一种新型特矮稻(命名为‘特矮稻-2’)的GA3信号转导途径正常,施加外源GA3不能恢复到正常植株的高度,说明此种矮稻的矮化机制与GA3无关。来源于组合‘特矮稻-2’ב日本晴’的F2群体的遗传分析表明,‘特矮稻-2’的特矮性状受1对隐性基因控制。采用SSR分子标记,将该矮秆基因定位于第12染色体上的RM519和RM235标记之间,遗传距离分别为15.9和22.0cM,该基因暂命名为ED。We investigated gibberellin （GA3） signaling in a novel dwarfing rice （Oryza sativa） ‘Teaidao-2＇, the results showed that exogenous GA3 could not rescue the dwarfing phenotype of ‘Teaidao-2＇. So GA3 was not involved in the dwarfing phenotype. The dwarfing gene was referred to as ED, a F2 population derived from cross between ‘Teaidao-2＇ and ＇Nipponbare＇ was constructed for mapping of the ED locus. The dwarfing phenotype of ‘Teaidao-2＇ was regulated by a single recessive gene. Simple sequence repeat （SSR） marker analyses revealed that ED was located between RM519 and RM235 with the genetic distance of 15.9 and 22.0 cM on chromosome 12.

关 键 词：水稻 GA3鉴定 矮秆基因 遗传分析 基因定位 

分 类 号：S511[农业科学—作物学]