水稻空间诱变矮秆新种质CHA-1的遗传分析及基因定位  

Genetic Analysis and Gene Mapping of a New Dwarf Rice CHA-1 Induced by Space Mutation

作　　者：李惠珠[1] 王慧[1] 郭涛[1] 刘永柱[1] 张建国[1] 陈志强[1] 

机构地区：[1]华南农业大学植物航天育种研究中心,广东广州510642

出　　处：《华南农业大学学报》2009年第1期6-9,共4页Journal of South China Agricultural University

基　　金：国家863计划项目(2007AA100101);"十一五"国家科技支撑计划重点项目(2008BAD97B02);广东省科技计划项目(2004A20107001;2006A20202006;2007A020400003);广东省自然科学基金(010353;05006656)

摘　　要：经空间诱变获得1个稳定遗传的水稻矮秆突变体CHA-1,对该突变体进行了株高遗传分析.结果表明,CHA-1的新矮生基因(暂命名为h)为1对隐性主效基因,与sd-1基因之间存在互补作用,并且表现为一定程度的连锁关系,2对矮生基因共同控制着CHA-1的株高性状.利用SSR分子标记将CHA-1的新矮生基因h定位在水稻第1染色体的长臂上,与标记RM302遗传距离为5.1 cM.A special dwarf mutant rice CHA-1, obtained by space mutation, was a stabile and inherited rice material. Genetic analysis of the height showed that the new mutant gene h（ named as h temporarily） from CHA-1 was a major recessive gene which linked with sd-1 in a certain extent. The two genes had complementary interaction and controlled the dwarf trait of CHA-1 together; The dwarf gene h was located on chromosome 1 linked with SSR marker RM302 and the genetic distance was 5.1 cM.

关 键 词：水稻 空间诱变 矮秆种质 遗传分析 基因定位 

分 类 号：S335[农业科学—作物遗传育种]