大白菜(Brassica pekinensis Rupr.)是我国的主要蔬菜,在北京地区占秋菜总产量的65％以上。大白菜属于异花授粉植物,杂种优势明显。但由于其花期较长,加之花朵小,每朵花结籽数又少,若采用人工去雄杂交的方法生产一代杂种种子,费工多,成本高,无实际利用价值。因此解决大白菜杂种种子的制种方法,是大白菜杂种优势利用工作中急需 Chinese cabbage (Brassica pekinensis Rupr.) Is the main vegetable in China, accounting for more than 65% of the total output of autumnal vegetables in Beijing. Chinese cabbage is a cross-pollination plant, heterosis is obvious. However, because of its long flowering period, combined with small flowers, each flower is less, if the hybrid method of artificial to male hybrid seed generation, more labor, high cost, no practical value. Therefore, the solution to the hybrid seed seed production methods, is the use of hybrid Chinese cabbage urgent need of work