megaspore

基本解释

• n.[植]大孢子；(種子植物的)胚囊

同根派生

• megaspore相关词

英汉例句

雙語例句

• 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。

• megaspore更多例句

词组短语

短語

• 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

• megaspore更多词组

英英字典

柯林斯英英字典

• the larger of the two types of spore produced by some spore-bearing plants, which develops into the female gametophyte (Also called macrospore)&rarrcomparemicrospore

• megaspore剑桥字典
• megaspore柯林斯字典

专业释义

辳業科學

• 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

地球科學

• 大孢子