水稻两系不育系的育种应用分析

水稻是重庆市最重要的粮食作物，两系杂交水稻因育种效率高、制种成本低、品种稻米品质好等优势，近年来成为水稻研究的热点之一。为明确两系水稻杂交组合遗传特性，选择了渝优系列代表性恢复系11个，分别与两系不育系‘C815s’、‘深08s’配制两系杂交新组合，对新组合的农艺性状、产量性状及组合实际产量进行了分析。结果显示，‘C815s’组合在株高、产量、稻瘟病抗性等性状上优于‘深08s’组合，而‘深08s’组合则在生育期、有效穗、稻米品质等方面优于‘C815s’组合。研究结果为两系亲本的创制及两系新品种的选育提供了一定的参考价值。

Breeding Application of Two-line Sterile Rice

Rice is the most important food crops in chongqing, Two-line hybrid rice has advantages of high breeding efficiency, low cost of seed production, good rice quality and so on, in recent years two-line hybrid rice has become one of the hot issues of rice research. For clear of two-line combination genetic traits, we chose 11 representative restorer lines of Yuyou series, combination of two sterile lines C815s and Shen 08s. two-line combination of agronomic characters, yield characters and yield are analyzed. The results show that C815s combination in plant height, yield and rice blast resistance superior to the shen08s’s, while shen08s combination in such aspects as growth duration, effective ears, rice quality is better than that of C815s combination. It provides reference for the two lines of parents created and the breeding of new combination.