在球形胚前期，胚乳细胞中已积累大量的蛋白质颗粒。

Protein grains were stored in endosperm cells at early stage of globular embryo.

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在球形胚前期，胚乳细胞中已积累大量的蛋白质颗粒。

Protein grains were stored in endosperm cells at early stage of globular embryo.

youdao