单词embryo sac
na.: 【植】胚囊
【植物;植物学】胚囊
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。