megaspore的例句（megaspore在句子中的用法）

• The chalazal megaspore of a linear tetrad develops into a polygonum type sac. 四分体线行排列,合点端的大孢子发育为蓼型胚囊.
• Megaspore tetrad is linear. The chalazal megaspore develops into an embryo sac of Polygonum type. 大孢子四分体为线形, 合点端功能大孢子发育成为蓼型胚囊.
• A single archesporium differentiates immediately below the nucellar epidermis, it functions directly the megaspore mother cell. 孢原细胞处于珠心表皮之下, 直接起大孢子母细胞的功能.