甘蓝型波里马不育胞质向南方白菜型油菜转育及育性变化

白菜型油菜品种、自交系与甘蓝型油菜波里马细胞质雄性不育系杂交、回交至ＢＣ２Ｆ１，再用南方白菜型油菜自交系与ＢＣ２Ｆ１测交，花期研究测交后代育性变化规律及定株定时观察白菜型波里马细胞质雄性不育材料与２９Ａ、广丰Ａ、阿油Ａ三种白菜型细胞质雄性不育材料育性变化情况．结果表明，在２６个测交后代中，雄性不育的占２３．１％，恢复可育的占７．７％，介于两者之间或育性分离的占６９．２％．在南方白莱型油菜中发现能完全恢复育性的自交系。白菜型波里马细胞质雄性不育材料的不育性较其他三种不育材料稳定．可为油蔬两用的南方白菜型油菜杂种优势利用提供新的不育源。

TRANSFERING POLIMA CMS FROM B.NAPUS INTO B. CHINENSIS AND STERILITY EXPRESSION

Interspecific crosses between a polima CMS line of B. napus and varieties of B. campestris were made and hack-crossing was conducted to produce BC2F1. Twenty six inbreeding lines of B. chinesis were tested for their ability to maintain completely the male sterility or restore the fertility in the crosses with BC2F1. Four completely setrile progenies and two fertile ones were oberved in the test-crosses. The results indicated that the male sterility associated with polima cytoplasm could be used in breeding for hybrid cultivars of B. chinesis which could be used for both vegetable and oilseed.