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属薄珠心，胚囊形成时珠心细胞全部消失。All nucellar cells disappear, when an embryo sac is ripe.

认为由花粉管的流出物能使珠心细胞活化。Activation of nucellar cells by discharge from the pollen tubes has been claimed.

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珠孔区域有伸长的珠心细胞。There are several nucellar cells in micropylar region that develop into embellum.

胚囊位于珠心顶部，胚囊下方的珠心组织形成珠心柱。Embryo sac lies on the top of nucellar. Nucellar tissuesunder ovule form nucellar colum.

成熟胚囊期，合点端部分珠心细胞特化为承珠盘。At the mature embryo sac stage, some nucellar cells at the chalazal region differentiated into hypostase.

山核桃胚来源于珠心细胞，属于无融合生殖中不定胚生殖范畴。The embryo in hickory origined from nucellar cells and it belonged to adventitious embryony reproduction one type of apomixis.

孢原细胞处于珠心表皮之下，直接起大孢子母细胞的功能。A single archesporium differentiates immediately below the nucellar epidermis, it functions directly as the megaspore mother cell.

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低温处理的蝴蝶兰，胚囊发育过程中珠心细胞提前退化，在大孢子母细胞外围形成较厚的胚囊壁。Nucellar cells degenerated in advance under low temperature, which resulted in thickened embryo sac wall surrounding the megasporocyte.

孢原细胞为表皮下3～4层细胞处的一个细胞，孢原细胞不经分裂直接发育成大孢子母细胞。The archesporial cell is a cell of 3￣4 layer cells under the nucellar epidermis, the archesporial does not undergo meiosis and becomes the megaspore mother cell.

随着胚乳吸器的发育，吸器附近的珠心细胞和珠被细胞中贮存的大量淀粉粒逐渐减少和消失。Lots of starch grains in nucellar cells and integumentary cells surrounding endosperm haustoria decreased and disappeared with the development of endosperm haustoria.

通过柑桔胚胎发育观察表明，授粉后50天左右，胚囊内仅有一个合子胚，未见珠心胚侵入胚囊，为单独分离合子胚培养的最好时期。Observation of citrus embryo development showed that in 50 days or so after pollination there was only one zygotic embryo in the embryo sac, and nucellar embryo was not yet invaded.

檬果多胚性是由珠心胚细胞演变而来，在遗传学上此特性可能是由一对隐性因子所控制。Polyembryony of mango is initiated from nucellar cells. From genetic Points of view, the polyembryonic characteristic of mango is probably controlled by a single pair of recessive gene.

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环形胚包围的珠心组织，逐渐发育并积累大量的淀粉而形成外胚乳，主要用于种子萌发时的养料。The nucellar tissue enclosed by circular embryo develops gradually and accumulates large amounts of starch and develops into perisperm which mainly provides nutrition for seed germinating.

成熟胚囊包括卵器，一个中央细胞，反足细胞与珠心核在胚囊初期存在而最终消失解体。The mature embryo sac contain an egg apparatus, a central cell, many spherical crystalline body liked starch grains, the antipodal cells and many nucellar cell remain firstly and disappeared at last.