A parent with an S1S2 genotype exhibiting sporophytic self-incompatibility can potentially fertilize which of the following plant genotypes of the same species with pollen grains?

Question

Quizplus · Accepted Answer

In sporophytic self-incompatibility, the pollen's ability to fertilize is determined by the diploid genotype of the parent plant. Pollen from an S1S2 plant cannot fertilize plants with either S1 or S2 alleles. Therefore, it can fertilize S3S4, which lacks both S1 and S2 alleles.

A Parent with an S1S2 Genotype Exhibiting Sporophytic Self-Incompatibility Can