雄配子不能与雌配子结合。
核配：同一个细胞中两个核之间的融合现象称为核配，核配发生在两个配子结合成合子的过程中。
Karyogamy the fusion of two nuclei that exist within a common cytoplasm, as occurs in the formation of the zygote from two gametes.
另一个雄配子和次生核结合形成初生胚乳核。
The other male gamete fuses with the secondary nucleus, forming the primary endosperm nucleus.
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