水稻杂种后代籽粒蛋白质含量的分离和变异  

Genetic Variability of Protein Content of Grain in Rice Hybrid Progenies

作　　者：何光华[1] 谢戎[1] 郑家奎[1] 阴国大 杨正林[1] 左永树[1] 黄建国[2] 邵启明[2] 

机构地区：[1]四川省农业科学院水稻高粱研究所,泸州646100 [2]西南农业大学,重庆630716

出　　处：《中国水稻科学》1997年第2期118-118,共1页Chinese Journal of Rice Science

基　　金：留学回国人员基金

摘　　要：P1, P2,F1,F2,B1,B2 in five combinations were used as materials and the genetic variability of grain protein content were analyzed. The results show protein content in rice grain belongs to quantitative traits controlled by polygene, F, and backcross generations present approximately normal distribution in continuous variation. There are some plants whose protein content of grain are higher than parents with high content among segregating generations. Selection was undertaken beginning with low generations, it is probable to obtain fine individuals. Parents’ protein content affects progenies, whereas the female parents have much bigger effect. It is beneficial to use parents with high protein content as female parents in breeding combinations.P1, P2,F1,F2,B1,B2 in five combinations were used as materials and the genetic variability of grain protein content were analyzed. The results show protein content in rice grain belongs to quantitative traits controlled by polygene, F, and backcross generations present approximately normal distribution in continuous variation. There are some plants whose protein content of grain are higher than parents with high content among segregating generations. Selection was undertaken beginning with low generations, it is probable to obtain fine individuals. Parents' protein content affects progenies, whereas the female parents have much bigger effect. It is beneficial to use parents with high protein content as female parents in breeding combinations.

关 键 词：蛋白质含量 遗传变异 杂种 水稻 

分 类 号：S511.035.1[农业科学—作物学]