megaspore

基本解釋

• n.[植]大孢子；(種子植物的)胚囊

同根派生

• megaspore相關(guān)詞

英漢例句

雙語例句

• Megaspore tetrad is linear. The chalazal megaspore develops into an embryo sac of Polygonum type.
  大孢子四分體為線形， 合點(diǎn)端功能大孢子發(fā)育成為蓼型胚囊。
• In theterosporous species, a distinction is usually made between megaspore mother cells and microspore mother cells.
  在異型孢子體種類中，可區(qū)分為大孢子母細(xì)胞和小孢子母細(xì)胞。
  plb.snnu.edu.cn
• A single archesporium differentiates immediately below the nucellar epidermis, it functions directly the megaspore mother cell.
  孢原細(xì)胞處于珠心表皮之下， 直接起大孢子母細(xì)胞的功能。

• megaspore更多例句

詞組短語

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更多詞組

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劍橋字典
• megaspore柯林斯字典

專業(yè)釋義

農(nóng)業(yè)科學(xué)

• 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.
  授粉后2h，蕾期授粉的對照已經(jīng)完成大孢子的第三次有絲分裂；經(jīng)CPPU處理后，17.65％的胚囊發(fā)育成熟；花期授粉的對照中有80.00％的胚囊的極核相互靠近，處理中25.00％的胚囊開始了極核的融合。

  生物學(xué)

• 大孢子

地球科學(xué)

• 大孢子