菜心细胞质雄性不育系转育研究

以油菜波里马胞质雄性不育系为不育源,四九菜心等6个品种为轮回亲本进行杂交、回交转育研究。结果表明:经过4个世代的单株选择和回交转育,选育出菜心胞质雄性不育材料经济性状与轮回亲本相似,平均不育株率为89.4%。其中以80天特青为轮回亲本转育的不育材料表现最好,不育株率达到98%,基本达到菜心胞质雄性不育系的育种目标。

Study on Transfer Breeding of Cytoplasmic Male Sterile Lines in Flowering Chinese Cabbage

Using Brassica napus cytoplasmic male sterile line Polima as the sterile source,and 6 flowing Chinese cabbage varieties as recurrent parents,the author studied the transfer breeding by crossing and backcross.We obtained some new cytoplasmic male sterile lines after four generations' plant selection and backcross,the economic traits of these sterile lines were similar to those of their recurrent parents,and their average rate of male sterile plants was 89.4%.Among them,the cytoplasmic male sterile line whose recurrent parent was 80-day-old Teqing had the best performance,and its rate of male sterile plants reached to 98%,which had basically achieved the breeding goal of cytoplamic male sterile line in flowering Chinese cabbage.