Activation of nucellar cells by discharge from the pollen tubes has been claimed.

认为由花粉管的流出物能使珠心细胞活化.

辞典例句

The nucellar epidermal cell cuts off several layer nucellar parietal cells.

珠心表皮细胞平周分裂产生多层珠心周缘细胞,为厚珠心.

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A single archesporium differentiates immediately below the nucellar epidermis, it functions directly the megaspore mother cell.

孢原细胞处于珠心表皮之下, 直接起大孢子母细胞的功能.

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The nucellar embryo suspensor , its development passed through the similar stages of the zygotic embryo.

珠心胚发育经历与合子胚相同的发育阶段.

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In mature embryo sac, the nucellar cap is composed of 2～7 layer of cells.

珠心帽在胚囊成熟时, 具有2～7层细胞.

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