There are commonly eight nuclei in the embryo sac: the egg apparatus at the micropylar end, made up of an gee nucleus and two synergid nuclei; three antipodal cells at the oppsite chalazal end that probably aid embryo nourishment; and two polar nuclei in the center that fuse to form the primary endosperm nucleus.
通常胚囊中有8个核，卵器在珠孔端，由卵和两个助细胞组成；3个反足细胞在合点端，可能为胚胎提供营养；胚囊中央有2个极核，融合在一起形成最初的胚乳核。
Two polar nuclei move to the micropylar end before sperm is released in a gap between the egg cell and central cell and subsequently taking off cytoplasm one after another. The sperm nucleus moving to the egg nucleus runs faster than the one to the polar nuclei. It fuses with the polar nuclei that are moving towards the antipodal cells at the chalazal end.
精子释放前，两极核移向卵细胞的合点端；两精子释放于卵细胞与中央细胞的间隙后，先后脱去细胞质，然后分别移向卵核和极核，移向卵核的精核快于移向极核的精核；精核与两极核在向反足细胞团方向移动的过程中完成雌雄核融合。
Two polar nuclei move to the micropylar end before sperm is released in a gap between the egg cell and central cell and subsequently taking off cytoplasm one after another. The sperm nucleus moving to the egg nucleus runs faster than the one to the polar nuclei. It fuses with the polar nuclei that are moving towards the antipodal cells at the chalazal end, Images showed the fusion process of male and female nuclei and polyspermous fertilization.
精子释放前，两极核移向卵细胞的合点端；两精子释放于卵细胞与中央细胞的间隙后，先后脱去细胞质，然后分别移向卵核和极核，移向卵核的精核快于移向极核的精核；精核与两极核在向反足细胞团方向移动的过程中完成雌雄核融合。
With the megasporocyte developing, a bigger vacuole appears in the micropyle end, then it migrating toward the chalazal end with the nucleus in the micropyle end, ringed ER disappears in this phase.
大孢子母细胞继续生长，先在珠孔端出现一个较大的液泡，液泡随后移向合点端，细胞核移至珠孔端，此时环状内质网消失；
The mature embryo sac contains 5 or 6 nuclei, including 1 egg, 2 synergids, 1 polar nucleus and 1 or 2 abortive nuclei at the chalazal end.
成熟胚囊具5核或6核，即1组卵器、1上极核、合点端的1个或2个退化核。
Two polar nucleus fused into the secondary nucleus, and located near the chalazal end of egg cell;
极核融合为次生核，并位于卵细胞合点端附近；
The pair polar nuclei lie in chalazal end to egg before fertilization, which fuse into a secondary nucleus or not;
受精前二极核合并成次生核或不合并，位于卵细胞的合点端。
The megaspore mother cell forms a linear " tetrad of megaspore " after meiosis, the chalazal megaspore is functional, its nucleus develops into polygonum type embryo sac through meiosis.
大孢子母细胞经过减数分裂形成线型排列的四分体，合点端的大孢子具有功能，其核经3次分裂形成蓼型胚囊。