The megagametophyte within the ovule of a flowering plant.

胚 Embryo sac 有花植物胚珠内雌配子体。

The larger embellum could be used as a secondary screening indicator for identifying aposporous embryo sac in Apluda mutica.

存在发达胚珠水蔗草无子生殖胚点之一.

Vacuoles in the synergids tended to concentrate mainly in the chalazal region.There was a peak period of lipid formation in the two synergids.

三助细胞与珠心相接胚壁有些部位出现十分明显突起，个别突起内有大型嗜锇体。