英语词汇“polar nucleus”的意思、释义、用法解释及翻译-春雷网

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词汇	polar nucleus
释义	Definition of polar nucleus in English: polar nucleus noun Botany (In angiosperm reproduction) either of the two haploid nuclei which move from the poles of the embryo sac to the centre and fuse with the male gamete to form the triploid primary endosperm nucleus. Origin Late 19th century; earliest use found in Sydney Vines (1849–1934), botanist. Definition of polar nucleus in US English: polar nucleus noun Botany (In angiosperm reproduction) either of the two haploid nuclei which move from the poles of the embryo sac to the centre and fuse with the male gamete to form the triploid primary endosperm nucleus. Origin Late 19th century; earliest use found in Sydney Vines (1849–1934), botanist.
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