英语释义

• larger of the two types of spore produced in heterosporous plants; develops in ovule into a female gametophyte

片语

megaspore nucleic释义大孢子核

macrospore[植] 大孢子

gastrula megaspore胚囊

Megaspore formation大孢子形成

megaspore tetrad四分大孢子

megaspore leaf大孢子叶

gynospore大孢子；[细胞] 雌孢子

megaspore germination大孢子萌发

megaspore e大孢子

megaspore competition大孢子竞争

megaspore haustorium[植]

英汉例句

• As development goes on, callose fluorescence disappears in the chalazal wall of diplosporous functional megaspore .

  二倍体功能大孢子的合点端细胞壁内的胼胝质荧光消失。

• Megaspore tetrad is linear. the chalazal megaspore develops into an embryo sac of polygonum type. Hypostase and special integument tapetum exist in the ovule.

  大胞子四分体线形排列，合点端大孢子为功能大孢子，胚囊发育类型为蓼型，具有特化的珠被绒毡层和承珠盘。

• Arrangement of megaspore is linear shaped, the megaspore of chalazal end is functional megaspore.

  大孢子排列为直线型，合点端大孢子为功能大孢子。

• The megasporocyte undergoes meiosis and gives rise to a linear or a「T」 shaped tetrad of megaspore, the chalazal megaspore was functional.

  大孢子母细胞减数分裂形成四个线形或「T」形排列的大孢子，合点端大孢子具功能。

• The megaspore mother cell undergone meiotic divisions and developed into a linear type of tetrads. The chalazal megaspore of the tetrad was functional.

  大孢子母细胞减数分裂形成线形四分体，合点端大孢子为功能大孢子，胚囊发育类型为蓼型。

• Development of megaspore and formation of embryo sac: the ovule has a layer of parietal cells at the sporogenous stage.

  大孢子的发育及胚囊的形成：造孢时期，造孢细胞发育成大孢子母细胞。

• Our main results were as follows: the ovary of male I degenerated and disappeared quickly upon megaspore tetrad degeneration, and developed into macrosporocytes;

  结果发现： 色木槭一期雄花（雄I）在大孢子四分体退化形成功能性大孢子时期，子房萎缩并迅速退化消失；

• 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。

• This shows a synchronous development of megaspore and pollen chamber.

  反映大孢子发育和贮粉室发生的同步性。