embryo sac

embryo sac什么意思,embryo sac翻译

基本解释

na.: 【植】胚囊

英汉解释

• 【植物;植物学】胚囊

例句

• A minute structure in seed plants, containing the embryo sac and surrounded by the nucellus, that develops into a seed after fertilization.

  种子植物的一个小的结构，含有胚囊并被珠心所包围，施肥后长成种子。

• Synergid cells Two haploid cells located near the egg cell at the micropylar end of the embryo sac in flowering plants.

  存在于开花植物胚囊内，是位于珠孔端的卵细胞两侧的两个单倍体细胞。

• But in angiosperms into the embryo sac in the two eggs and sperm, respectively, and a nuclear fusion.

  但在被子植物中进入胚囊的两个精子则分别与卵和极核融合。

• Simultaneously, the mutant had malformation embryo sac and two ovules inthe same ovary, which implied that D functional genes were included.

  同时突变体还伴随有胚囊、胚珠变异，不排除还有D组基因参与的可能。

• Malformation embryo sac, twin-ovule and twin-embryo sac in an ovary were seen with paraffin slic.

  石蜡切片观察还发现胚囊畸形，出现双胚珠和双胚囊。

• In third stage, at maturing of the embryo sac, pollen tubes grow directionally toward micropyle into embryo sac.

  朝珠孔定向生长阶段，胚囊成熟时，花粉管朝珠孔定向生长进入胚囊。

• The result indicated that the corn is an anatropous ovule, thick nucellus embryo sac.

  结果表明玉米是倒生胚珠，厚珠心胚囊。

• It is concluded that embryo sac sterility was the main reason for highly stable seedless characteristic of Lipeng No. 2 cultivar.

  因此，胚囊高度败育是丽椪2号产生无核的主要原因。

• Chalazal end of mature embryo sac is narrow and elongated.

  成熟胚囊的合点端狭长。

• The mature embryo sac contains an egg apparatus, a central cell and three antipodal cells.

  成熟胚囊为蓼型胚囊，它包括卵器，一个中央细胞和三个反足细胞。