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当前生产中选育出的大白菜雄性不育系的不育株率一般都稳定在50%左右。利用不育系配制杂种,亲本繁殖不需用人工授粉,使本株系成株在隔离条件下自然授粉,从不育株上留种即可。但在配制杂种一代种子时,必须拔除不育系内的有粉株。杂交制种技术如下:一、冷床春化育苗大连地区一般于1月末至2月
At present, the male sterile lines of Chinese cabbage breeding are generally stable at about 50%. The use of sterile hybrid rice system, the parental reproduction without artificial pollination, so that the strains of adult plants in the natural conditions of pollination, sterile plants can be planted. However, in the preparation of hybrid seeds of the generation, must be removed sterile powdery strains. Hybrid seed production techniques are as follows: First, the cold bed nursery nursery Dalian area generally in late January to February