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芸苔属(Brassica)植物中广泛存在孢子体型自交不亲和性。据近年研究,表现自交不亲和的植株在开花前1—2天柱头表面即形成“隔离层”(特殊蛋白质)。这种“隔离层”能阻止相同基因型花粉发芽但不妨碍另一基因型花粉受精,表明存在于柱头表面的这
Sporophytic self-incompatibility is widespread in Brassica plants. According to recent studies, the self-incompatible plants form a “barrier” (special protein) on the surface of the stigma 1-2 days before flowering. This “barrier” prevents the germination of the same genotype pollen but does not prevent the pollen fertilization of the other genotype, indicating that this is present on the stigma surface