K型新质源胞质不育系的发掘和利用

Excavating and Application in Hybrid Rice of K-Type CMS, A New Kind of CMS Made form Japonica

K型胞质不育系是四川省农业科学院水稻高粱研究所培育并大面积应用于生产的通过"粳/籼//籼"复合杂交创制的粳稻不育胞质,它具有"三高一低"的特点即:高柱头外露率、高柱头生活力、高午前花累积率和低闭颖率,并且在提高组合的配合力、结实率、千粒重和异交习性方面都有很好的效果。

K-type CMS are Rice and Sorghum Research Institute, Sichuan Academy of Agricultural Sciences to cultivate used in the production of large-scale adoption of ＂Japonica / indica//Indica＂ composite created japonica hybrid sterility cytoplasm, it has characterized by： high stigma exsertion rate, high stigma viability, high-end of the morning flower cumulative closure rates and low rate of closed, and improve portfolio combining ability, seed setting rate, 1000-grain weight and outcrossing habits have very good results.