查询词典 gametophyte

The archegonial initials could be distinguished from the perip heral cells at the micropyle end of the female gametophyte before the completion of the wall formation where the cell wall had reached the center of the gametop h yte.

雌配子体中游离核之间细胞壁还未完全形成时，在其近珠孔端表面可看到颈卵器母细胞发生。

Botrychium, and in gymnosperms it pushes the embryo into the female gametophyte tissue.

某些种类的石松属植物(例如卷柏属 Selaginella)、少数蕨类(例如阴地蕨属 Botrychium)和裸子植物中胚柄将胚胎推入雌性配子体中。

The investigation of the structures of reproductive organs,megasporogenesis,microsporogenesis and the development of male and female gametophyte in Dendrocalamus sinicus are made using normal paraffin method in this article.

通过石蜡切片的方法对巨龙竹生殖器官结构、大小孢子的发生和雌、雄配子体的发育过程进行了观察研究。巨龙竹为一心皮组成的单室单子房，子房内具有一个胚珠，倒生、双珠被、厚珠心。

This article mainly discusses the large-scaled cultural conditions of clone in Gametophyte Laminaria .It studies the proper temperature, light time, light intensity, the consumption of nitrogen and phosphorus, the cultural state and inoculating density on the growth of gametophytic clone, the experiment of large-scaled culture had been done under comparatively proper conditions, in the same time, we studied the growth rule of gametophytic clone in the cultural process.

本文主要探讨了海带配子体克隆的大规模培养条件，对海带配子体克隆生长的适宜温度、光照时间、光照强度、营养盐消耗、培养状态以及接种密度进行了研究，并在相对适宜条件下进行了大规模培养实验，同时，对海带配子体克隆在培养过程中的生长规律进行了研究。

Epiphytic bacteria were isolated from sporophytic thallus collected from Qingdao and Dalian or gametophytic filaments stored in our lab of Laminaria japonica. Identification was done using both traditional physiological and biochemical way and molecular method. Phylogeny tree was established based on 16S rRNA gene sequence analyses, and some sequences of epiphytic strains from both sporophyte and gametophyte were different from all the sequences already exit and could be the new species.

采用生理生化和16S rRNA基因序列比对的方法对从两个海区采集的海带孢子体以及实验室中保存的海带配子体样品的外生菌分别进行组成分析，16S rRNA基因序列揭示了在海带孢子体和配子体的外生菌中都存在一些与现有数据库中序列的遗传关系较远的菌株。

The pollen tube enters the female gametophyte from micropylar end and the free nuclei near pollen tube have the average chance to acting as the functional egg.

花粉管从雌配子体的珠孔端进入，珠孔端的游离核行使卵细胞功能的机会是均等的。

In order to trace the male cytoplasm transmission during double fertilization process, the mature gametophyte, zygote, proembryo and primary endosperm in Pelargonium hortorum Bailey and Rhododendron mucronulatum Turcz were investigated using transmission electron microscope and DNA staining technique.

本研究应用透射电镜及DNA荧光技术对天竺葵和杜鹃的成熟配子体以及在受精以后雄性细胞器的存在和分布进行了系统的细胞学研究，阐明了这两种植物中雌性生殖单位的超微结构特点及雄性和雌性细胞中质体和线粒体在受精作用中的传递。

Polysomes change in number as "few-many-few-many" during the development of the egg, early zygote stage, zygote at dormancy, zygote in prophase of mitosis and two-celled proembryo in sugar beet, which indicates that such changes in metabolism as "low-high-low-high" activity may relate to the transformation from gametophyte to sporophyte generation.

根据上述结果可以得出，栽培甜菜从卵细胞成熟→合子初期→合子休眠期→合子分裂前期→二细胞原胚的超微结构变化中多聚核糖体的变化最为显著，表现为&少→多→少→多&的数量变化过程，反映出细胞代谢状态也经历了&弱→强→弱→强&的变化过程，这种变化趋势与配子体世代向孢子体世代转变有关。

Light microscope was employed to observe spore germination, protonemal development, gametophyte differentiation of Ptychomitrium sinense indoor cultured. The results showed that in P.

：通过室内人工培养中华缩叶藓的孢子，在光学显微镜下详细观察了其孢子萌发、原丝体发育及配子体发生的全过程。

About a year after pollination, the generative cell of the four-celled male gametophyte undergoes division, giving rise to two kinds of cells—a sterile cell and a spermatogenous cell.

在授粉后大约一年，四个中生殖细胞-细胞男性的配偶体接受区分，引起细胞的二个类型-一个不毛的细胞和一个 spermatogenous 细胞。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。