近年来菜区利用杂种一代抗病高产的优势,大面积推广大白菜杂交种。目前国内外已开始利用自交不亲和系和雄性不育系的 “两系法”制种。使大白菜杂优一代的利用取得了显著成绩。在利用自交不亲和系方面,由于其繁殖比较困难,进一步扩大利用于杂种优势育种受到了限制。自交不亲和 In recent years, the use of hybrid areas of high yield disease-resistant hybrids advantage of large-scale promotion of Chinese cabbage hybrids. At home and abroad at present, the “two lines” seed production using self-incompatible lines and male sterile lines has been started. Make the use of hybrid generation of Chinese cabbage has made remarkable achievements. In the use of self-incompatible lines, due to its breeding more difficult to further expand the use of heterosis breeding has been limited. Self-incompatibility