Activation of nucellar cells by discharge from the pollen tubes has been claimed.
認(rèn)為由花粉管的流出物能使珠心細(xì)胞活化.
辭典例句
The nucellar epidermal cell cuts off several layer nucellar parietal cells.
珠心表皮細(xì)胞平周分裂產(chǎn)生多層珠心周緣細(xì)胞,為厚珠心.
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A single archesporium differentiates immediately below the nucellar epidermis, it functions directly the megaspore mother cell.
孢原細(xì)胞處于珠心表皮之下, 直接起大孢子母細(xì)胞的功能.
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The nucellar embryo suspensor , its development passed through the similar stages of the zygotic embryo.
珠心胚發(fā)育經(jīng)歷與合子胚相同的發(fā)育階段.
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In mature embryo sac, the nucellar cap is composed of 2～7 layer of cells.
珠心帽在胚囊成熟時(shí), 具有2～7層細(xì)胞.
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