以遗传基础各不相同的6个甘蓝型油菜品系与甘蓝杂交,观察授粉后3、8和24小时花粉在柱头上附着,萌发及花粉管在柱头和花柱中的生长情况。从对花粉和柱头乳突细胞的形态学观察和统计分析的结果看,母本基因型对种间的花粉一雌蕊相互作用影响很大。对杂交幼果田间脱落率的调查结果支持这一论点。供试材料中以甘蓝型油菜自交不亲和系184×甘蓝的授粉亲和性最高,因此自交不亲和与种间杂交不亲和似乎是分别受极为相似的两套基因系统控制的。 Six hybrids of Brassica napus with different genetic backgrounds were crossed with cabbage. The attachment and germination of pollen on the stigma and the growth of pollen tube in stigma and style at 3, 8 and 24 hours after pollination were observed. From the morphological and statistical analysis of pollen and stigma cells, the maternal genotype had a great influence on the pollen-pistil interaction. The findings of the survey on the rate of shedding of young hybrids in the field support this argument. Among the tested materials, the self-incompatible line 184 × cabbage had the highest pollination affinity. Therefore, incompatibility between self-incompatibility and interspecific hybridization seemed to be controlled by two closely related gene systems .