胚

Most of ovaries in the mutant were without embryo sac,and the sac full of par enchyma cells.

大多数子房不具真正的胚囊，"胚囊"中充满了薄壁细胞。

The central portion of an ovule in which the embryo sac develops ;the megasporangium.

珠心胚珠的中心，胚芽囊在此发育；大孢子囊

The mature embryo sac has 7 nucleuses in solar greenhouse.

在日光温室条件下形成的成熟胚囊都是7核胚囊。

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。

Nucellar cells degenerated in advance under low temperature, which resulted in thickened embryo sac wall surrounding the megasporocyte.

低温处理的蝴蝶兰，胚囊发育过程中珠心细胞提前退化，在大孢子母细胞外围形成较厚的胚囊壁。

Further studies should be done to confirm if Est-4, Acp-2 and Acp-3 could regulate the development of 8-nucleat embryo sac.

授粉后Est和Acp的酶位点变化说明与胚珠发育相关的一系列基因表达有时序性，位点Est-4、Acp-2和Acp-3是否直接参与了八核胚囊发育的控制，有待于进一步的研究。

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

胚珠种子植物的一个小的结构，含有胚囊并被珠心所包围，施肥后长成种子受精的产物是杂合子。

Light has no significant effect on somatic embryogenesis, and sometimes even inhibit.

光照对蔷薇科植物的体胚发生没有显著的影响，有时光照会抑制体胚发生。

Embryological observations on Crawfurdia delavayi, Tripterospermum cordatum, T. chinense, Gentiana striata and Pterygocalyx yolubilis show that the group under study is greatly diverse in differentiation and development of anther wall, type of ovule and placentae, synergid and antipodal cell in embryo sac, testa and embryogeny etc. The embryological characters are different among Crawfurdia, Tripterospermum and Gentiana Sect.

胚胎学 本文对披针叶蔓龙胆C.delavayi、双蝴蝶T.chinense、峨眉双蝴蝶T.cordatum、条纹龙胆G.striata和翼萼蔓P.voiubilis作了较详细的胚胎学研究，这些类群在花药壁的分化和形成、胚珠和胎座类型、卵器中的助细胞和反足细胞、种皮以及胚发育等特征上存在差异，并且在胚胎学特征上各自拥有原始和进化的性状。

It is found that 226 and 197 are eligible culture geno- types with the embryoid emergence rate of 90% and 70%,embryiod emergence index of 3.0 and 2.0,respectively.

经过重复实验，226、197能够产生大量胚状体，胚状体的发生频率分别为90%和70%左右，发生指数3.0和2.0。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。