太白红杉具简单多胚和莲座胚。
Simple polyembryony occurs frequently and rosette embryo occurs occasionally.
本文综述了被子植物多胚苗的研究进展。
Advance in polyembryonic seedling (PS) in angiosperms is summarized in the paper.
关于被子植物多胚苗的发生机理目前还没形成统一的定论。
However, affirmative conclusion about the mechanism of producing the PS material in angiosperms is not still formed and obtained.
在同一季节抽穗开花的主穗和分蘖穗之间，其颖花内的多卵频率不存在明显差异，多胚苗频率的差异也不明显。
However, there was no difference in the frequency between the main_panicles and the tilling_panicles of heading at the same season.
胚性细胞分裂产生两个细胞，进而分化发育成多细胞原胚、球形胚、心形胚及子叶胚。
Then embryogenic cell divided into two cells, which sequentially differentiated through multicell proembryo, globular, heart-shaped and cotyledonary embryo stages.
而非胚性愈伤组织质地松散有水渍状、表面粗糙、多呈白色。
On the contrary, the non embryogenic callus was loose in texture, rough in surface, watery and white in color.
目的探讨人胚神经干细胞体外培养的条件和分化情况，以摸索出一种切实可行的能获得较纯且多潜能人胚神经干细胞的方法。
Objective to study the cultivation condition in vitro and differentiation of neural stem cells from the embryonic human in order to find a way to get purified multipotential neural stem cells.
结果胚鼠室管膜源性神经干细胞在相应培养条件下呈现出神经干细胞快速增殖，形成由多细胞组成的细胞球（神经球）；
Results The NSCs derived from the fetal rat ependyma were observed to rapidly proliferate to form some cellular spheres or neural spheres consisting of NSCs.
为了探讨人胚神经干细胞体外培养条件和分化情况，摸索出一种切实可行的获得较纯、多潜能人胚神经干细胞的方法。
This is a study on the cultivation condition in vitro and differentiation of neural stem cells from human embryonic brain in order to find a way to get purified multipotential neural stem cells.
为了探讨人胚神经干细胞体外培养条件和分化情况，摸索出一种切实可行的获得较纯、多潜能人胚神经干细胞的方法。
This is a study on the cultivation condition in vitro and differentiation of neural stem cells from human embryonic brain in order to find a way to get purified multipotential neural stem cells.
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