megaspore

英汉释义

• n.

  1.【植】大孢子

英英释义

• n.

  1.the larger of two kinds of spore produced by seed plants and some ferns, which develops into a female gametophyte.

英汉例句

• 1.In theterosporous species, a distinction is usually made between megaspore mother cells and microspore mother cells.

  在异型孢子体种类中，可区分为大孢子母细胞和小孢子母细胞。

• 2.Of the four products of a megaspore mother cell, three usually abort.

  在大孢子母细胞分裂产生的四个孢子中，三个会解体消失。

• 3.The megaspore mother cell meiosis to form a linear megaspore tetrad.

  大孢子母细胞减数分裂产生直线形大孢子四分体。

• 4.In the gymnosperms the megaspore gives rise to a cell that is termed the embryo sac because of its similarity to the angiosperm structure.

  在裸子植物中，大孢子也产生一个细胞，因为它类似于被子植物的胚囊细胞，故也可以称之为胚囊。

• 5.Genesis of megaspore and development of embryo sac in Carica papaya L .

  番木瓜的大孢子发生与胚囊发育。