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甘蓝型油菜与芥菜型油菜杂交研究结果表明，杂交结实力与杂交组合方式以及参与杂交的亲本材料有关，以芥菜型油菜作母本的杂交结实力高于以甘蓝型作母本的组合：芥×甘杂交组合的平均结实数／花为 ２．６４ 粒，而甘×芥杂交组合的平均结实数／花为 ０．１０ 粒。芥甘杂种一代形态特征和生育期介于双亲之间，甘芥杂种一代不表现整齐的中间类型，株间差异明显；总体来看，芥甘杂种一代与双亲回交的结实力（０．４０，０．２１）低于甘芥杂种一代与双亲回交的结实力（３．３０，１．７４），无论是芥甘杂种一代还是甘芥杂种一代，用甘蓝型油菜作父本回交的结实力高于用芥菜型油菜作父本回交的结实力，但也有个别回交组合出现例外，不表现上述规律。 Ｂ Ｃ１ 代种子当年播种出苗率低（１８．５％ ），群体株间性状差异明显，生育期极不一致。芥甘杂种一代与甘蓝型油菜亲本第二次回交，其平均结实数／花较回交一代提高 １．０８ 粒， Ｂ Ｃ２ 代种子当年播种出苗率仍较低，但较对应的 Ｂ Ｃ１ 代稍有提高，群体中出现趋回交父本性状但雄性育性彻底退化的植株。芥甘杂种一代自由授粉所得 Ｆ２ 群体是一个变异极为丰富的遗传群体。
The results of crossbreeding study between Brassica napus and Brassica juncea showed that crossbreeding strength was related to hybrid combinations and parental materials involved in crossbreeding. The combination of Brassica juncea maternal hybrids was stronger than that of Brassica napus The average number of seed set / flower of G. hybrids was 2.64, while the average number of seed set / flower of O. x mustard combinations was 0.10. The morphological characteristics and growth period of Chinese mustard hybrids were between their parents. The sweet potato hybrids did not show a neat middle type among the F1 generation. The differences between the two groups were significant. Overall, , 0.21) was lower than that of backcrossing between parents and parents (3.30 and 1.74), both of which were male and female. The fruiting ability is higher than that of the backcrossing of the male mustard rape. However, there are some exceptions to the backcrossing combinations, which do not show the above rules. The seeds of B C1 seeding the seedling rate was low (18.5%), obvious differences between groups of traits, very inconsistent growth period. The average backcross number per cross was increased by 1.08 times compared with the backcross generation. The seedling emergence rate of B C2 seeds in that year was still low, but slightly higher than that of the corresponding Bcl generation There is an increase in the group emerged back to the father of the traits of male fertility but completely degraded plants. The F1 population derived from free and pollination mustard is a very variable genetic group.