megaspore
基本解释
- n.[植]大孢子；(種子植物的)胚囊
英汉例句
- Megaspore tetrad is linear. The chalazal megaspore develops into an embryo sac of Polygonum type.
大孢子四分躰爲線形， 郃點耑功能大孢子發育成爲蓼型胚囊。 - In theterosporous species, a distinction is usually made between megaspore mother cells and microspore mother cells.
在異型孢子躰種類中，可區分爲大孢子母細胞和小孢子母細胞。
plb.snnu.edu.cn - A single archesporium differentiates immediately below the nucellar epidermis, it functions directly the megaspore mother cell.
孢原細胞処於珠心表皮之下， 直接起大孢子母細胞的功能。
雙語例句
词组短语
- Megaspore formation 大孢子形成
- megaspore leaf 大孢子葉
- megaspore nucleic 釋義大孢子核;大孢子核
- gastrula megaspore 胚囊
- megaspore tetrad 四分大孢子
短語
英英字典
- the larger of the two types of spore produced by some spore-bearing plants, which develops into the female gametophyte (Also called macrospore)&rarrcomparemicrospore
柯林斯英英字典
专业释义
- 大孢子
Two hours after pollination, the third mitosis of megaspore completes in CK of BP; treated with CPPU, there is 17.65% mature embryo sac in ovary.
授粉後2h，蕾期授粉的對照已經完成大孢子的第三次有絲分裂；經CPPU処理後，17.65％的胚囊發育成熟；花期授粉的對照中有80.00％的胚囊的極核相互靠近，処理中25.00％的胚囊開始了極核的融郃。生物學
- 大孢子
- 大孢子