Hetero-fertilization frequencies detected in four three-way cross populations.

Note: The two pollination models for three-way crosses are (A×B)×C and A×(B×C). For consistency, the genotypes of SSR allele combination in endosperm (E) and leaf (L) are shown using the same symbol with the pollination model A, B and C.备注：三交杂交的两种授粉模型为(A×B)×C与A×(B×C)。为保持一致性，胚乳（E）与叶片（L）的简单序列重复（Simple Sequence Repeat, SSR）等位基因组合的基因型，将采用与授粉模型A、B、C相同的符号进行标注。