甘蓝型油莱与埃塞俄比亚芥杂种F_1衍生后代育性及性状变异的研究结果表明:(1)育性随世代的衍生而增加,植株育性从BCF_2的85.71％提高到BCF_3的99.36％;花粉育性从BC_1F_2的61.7％提高到BC_1F_3的72.6％。(2)植株经济性状随世代提高而不断改善。BC_1F_2和BC_1F_3的每角粒数分别为9.63和13.55粒,单株产量分别为13.62克和21.05克,但在BC_1F_3,种间杂种的遗传紊乱现象依然存在。(3)连续4个世代分离筛选,获得一些变异新类型,如无花瓣、黄种皮等。 The results showed that: (1) Fertility increased with generations derived, and plant fertility increased from 85.71% of BCF_2 to 99.36% of BCF_3; pollen fertility Sex increased from 61.7% of BC_1F_2 to 72.6% of BC_1F_3. (2) Plant economic traits continued to improve with generations. The number of grains per BC_1F_2 and BC_1F_3 was 9.63 and 13.55 grains per plant, respectively, and the yield per plant was 13.62g and 21.05g, respectively. However, genetic disruption still existed in BC_1F_3. (3) Separation and selection for 4 generations in succession, some new types of mutation were obtained, such as petals, yellow seed coat and so on.