芥菜型油菜与甘蓝型油菜种间杂种二代分离观察

Segregation in F 2 progenies from open pollination of F 1 hybrids between Brassica juncea×B.napus

从芥菜型油菜×甘蓝型油菜种间杂种Ｆ１自由授粉获得的Ｆ２的叶型、现蕾期、始花期、雄蕊发育、花粉活性和种子育性的分离观察结果表明，芥甘杂种Ｆ２超亲分离，产生大量变异类型，可根据花粉可染率和角果长度对Ｆ２植株种子育性进行间接选择。

Segregations of leaf morphology,bud appearance,flowering,stamen development,pollen viability and seed fertility in F 2 progenies derived from open pollination of F 1 hybrids of interspecific cross between Brassica juncea ×B.napus were observed.The results showed that the interspecific F 2 progenies segregated transgressively,forming much variation. Seed fertility of the plants was indirectly selected on the basis of their pollen stainablity and silique length in the F 2 progenies.