embryo sac

常见例句

There ware two cell proembryo and some endosperm free nucleuses in the embryo sac 7-8 days after pollination;
授粉后7-8天，在胚囊中见到二细胞原胚及数个胚乳游离核。
Then the uninucleate embryo sac forms 7-celled or 8-nucleate embryo sac of polygonum type following its three times division successively.
合点端功能大孢子发育为单核胚囊，并经三次核的有丝分裂形成7细胞（8核）的蓼型胚囊。
The process of embryo sac formation and development in rice (cultivar IR36) was studied by the modified GMA semi-thin serial sectioning technique.
利用改进的GMA半薄连续切片技术对水稻品种IR36胚囊形成和发育进行了研究。