查询词典 mother cell

The sterile line of Zhenshan 97A, Baoyuan A, g37A and Peiai64S had more Ca〓 precipitatesthan those in the fertile anthers since the pollen mother cell stage (which were mainly deposited in the epidermis, endothecium and vascular bundle).

野败不育系珍汕97A、包台型不育系包源A及温敏核不育水稻培矮64S和无花粉型不育系g37A的花药均从花粉母细胞时期开始出现较多的Ca〓沉淀，主要分布在药壁外层、药室内壁和药隔中。

In the late of April of the second year, male inflorescences unbound and pollinated. When female inflorescences accepted the pollen grains, ovary development was increased in early May. With the development of either of the two ovule, funiculus, integument and nucellus were differentiated. Embryo sac mother cell came into being and the meiosis begins. Then fuctional megaspore developed into matured embryo sac that contain eight nucleuses. In the end of May, double fertilization generated.

次年，4月下旬，雄花序解螺旋散粉，雌花序开花授粉；5月上旬，雌花序授粉后，迅速增长，子房膨大，两个胚珠分化出珠柄、珠被和珠心，珠心中产生孢原细胞；5月中下旬，大孢子母细胞形成并减数分裂，功能性大孢子形成成熟的八核胚囊；5月底，发生双受精。

Female gametogenesis in higher plants undergoes various developmental changes, including the de novo formation of germline cells, the differentiation of the megaspore mother cell, meiosis, megaspore selection, and the development of the embryosac.

高等植物雌配子体的形成涉及孢原细胞和大孢子母细胞的确立与分化、大孢子发生、功能大孢子以及胚囊的形成和发育等多种复杂调控过程。随着当代生物技术及功能基因组学的发展，近年对雌配子体发育的研究已从细胞学描述逐渐过渡到对基因和发育调控分子机理的探索。

The gametophyte is derived from the product of a reduction division in the megaspore mother cell.

该配子体是由大孢子母细胞进行减数分裂而来。

Each megaspore mother cell, which ultimately undergoes meiosis, giving rise to a linear series of four megaspores.

每 megaspore 母亲细胞，最后接受减数分裂，引起线连续的四 megaspores。

Megaspore At this time, only megaspore mother cell showedhybridization signal.

FIE仅在雌配子体和雄配子体中表达，而在花的其他部位无杂交信号。

In the early period of ovary development of Castanopsis delavayi, the size of ovules relative to the ovary cavity is small and rich trichomes can be found before the development of the megaspore mother cell.

高山栲在子房发育的早期胚珠在子房中占有的体积相对小，在大孢子母细胞发育前子房中已经有丰富的毛被。

Endogenous cadavarine content in female flower from megaspore mother cell stage to female flower maturation was higher than those in m...

亚精胺和腐胺含量随着大小孢子四分体形成和大孢子核的连续分裂而分别表现下降和上升。

The purpose of this study was to establish an efficient and stable gene transfer system for Phalaenopsis via pollen tube pathway. For this purpose, the growth and development of ovary and megaspore mother cell in Phalaenopsis was microscopically examined.

本研究主要是以花粉管法进行蝴蝶兰之基因转殖，希望建立效率高且稳定的转殖系统，以应用於蝴蝶兰育种。

Seeds produced in this way may be either haploid or diploid depending on whether or not the megaspore mother cell undergoes meiosis, often, in the process termed pseudogamy, entry of the male gamete is required to stimulate the development of the female gamete, even though nuclear fusion does not occur.

有时也有假结合的过程发生，在这个过程中，雄性配子的进入是为了促进雌性配子的发育，但核融合的现象却不发生。

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如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。