Method for selectively culturig with cytoplasmic male sterile line and its hybridized combination

A method for selectively culturing the cytoplasmic male sterile line of cabbage and its hybridized combination includes such steps as hybridizing between cytoplasmimale sterile material and selfed maintenance line of cabbage to obtain No.1 cross generation, 6-generation backcrossing with selfed maintenance line of cabbage to obtain the cytoplasmic male sterile line, crossing with the excellent self-line of cabbage to obtain the No.1 cross generation F, and field screening more times to obtain the hybridized combination of cabbage.