水稻无花粉型雄性不育基因的遗传关系剖析及定位

本文以同时携带脚基因（无花粉型雄性不育）和wx（糯性）基因的wxB^ms系及cms、ms和wx基因的wxA^ms为材料，观察ms、cms及wx的遗传关系并对ms基因进行染色体定位。研究结果如下：遗传分析表明，无花粉型雄性不育受一对隐性核基因控制；糯性基因wx与ms表现独立遗传，非糯性突变导致ms后代育性异常分离，故只要去除保持系中带有ms突变基因的植株，便可实现不育系cms-龙特浦wxA的保纯繁殖；本试验中出现的cms-龙特浦wxA^ms／龙特浦wxB的F1代育性恢复现象解释为：ms基因上位cms，ms的雄性遗传表达早于cms，cms雄性不育的发育表达因滞后而被掩盖；采用SSR分子标记技术，将ms基因定位在第1条染色体上的SSR标记RM579和RM23，为克隆该基因进行雄性不育机理研究奠定基础。

Genetic Relationships Dissection and Molecular Mapping of a Non-pollen Male Sterility Gene in Rice

In this paper,the material,carrying ms(a genic no-pollen male sterility ) gene and wx(waxy) gene in rice,obtained from waxy hybrid rice A/B lines during developing waxy hybrid rice was used to explore the genetic relationships among ms,cms and wx.Furthermore,ms gene was mapped by SSR marker.The main results were submitted as follows:Genetic analysis suggested that ms was a recessive nuclear gene;The genetic technique for development of cms-Longtepu wxA breeder seeds was only to make ms gene free in the Long...