温敏核不育基因置于不同遗传背景下育性表现变异的遗传初探  

Preliminary Genetic Study on the Variation of Fertility Expression of TGMS Gene in Different Genetic Backgrounds

作　　者：武小金[1] 尹华奇[1] 

机构地区：[1]湖南杂交水稻研究中心

出　　处：《中国水稻科学》1996年第1期1-6,共6页Chinese Journal of Rice Science

摘　　要：采用低温敏核不育系９０３３６Ｓ、中温敏核不育系９０３３２Ｓ和安农Ｓ－１，高温敏核不育系９０３４１Ｓ作材料，在自然变温条件下，观察Ｆ２代、回交一代的育性表现，发现９０３３６Ｓ和９０３３２Ｓ的不育起点温度差异由相互独立的两个显性基因（Ｌ１，Ｌ２）控制，Ｌ１，Ｌ２有降低不育起点温度的作用；安农Ｓ－１和９０３４１Ｓ的不育起点温度差异是由单个不完全显性基因Ｈ造成的，Ｈ有提高不育起点温度的作用。In this experiment, 903365, with low sterility inducing temperature (SIT), 90332S and Annong S1, with medium SIT, 90341S, with high SIT were selected as parents for researching the genetics of variation of fertility expression of TGMS gene in different genetic backgrounds. The fertility expression of F2s and B1s was observed under natural conditions. It was found that the SIT difference between 90336S and 90332S is controlled by two independent dominant genes (L1,L2) and the SIT difference between Annong S-1 and 90341S is controlled by a incomplete dominant gene H. L1,L2 can decrease SIT, but H increase it.

关 键 词：育性表现 基因 温敏核不育 水稻 三系配套 

分 类 号：S511.103.5[农业科学—作物学]