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female gametophyte相关的网络例句

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与 female gametophyte 相关的网络例句 [注:此内容来源于网络,仅供参考]

Simultaneously the four cells of the tier below the embryo, the suspensor cells, elongate greatly and force the four developing embtyos through the wall of the archegonium and into the female gametophyte.

同时地列的这四个细胞在胚胎,suspensor 细胞,下面延长很大而且强迫穿过造卵器的墙壁四发展中的 embtyos 和进入女性的配偶体之内。

By the nucellar cells PCD, which were encircling the female gametophyte, the pollen chamber connected with the archegonium chamber for the fertilization in coming.

在胚珠中的雌配子体发育完成、受精过程开始之前,贮粉室与颈卵器室贯通。这一过程是通过雌配子体周围的珠心细胞发生程序性死亡完成的。

The female gametophyte consists of egg apparatus, central cell and three antipodal cell at the mature embryo sac stage.

以福建省锥栗主产区建瓯市采集的17个锥栗品种的花粉为材料,经前处理后进行电镜扫描。

The larger of two types of spores that give rise to a female gametophyte.

大孢子两种孢子中较大的一种,会产生雌性配子体

About 13 months after pollination, when the female gametophyte contains some 2000 free nuclei, cell wall formation begins.

在授粉后大约 13个月,当女性的配偶体包含一些 2000个自由的核的时候,细胞壁形成开始。

The development of the obturator and the micropyle correlates with that of the female gametophyte in P.

黄檗珠孔塞和珠孔的发育与雌配子体发育存在密切关系。

Paraffin section technique was applied in the study of the development of the seed coat of Pinus kwangtungensis. The results showed that the development of seed coat follows with the development of the megaspore mother cell. In the development of female gametophyte, a thin, dense and dark layer of cells formats around the female gametophyte.

运用石蜡切片法,在透射电子显微镜和光学显微镜下观察华南五针松种皮的形态结构和发育,用PAS反应显示细胞内淀粉粒分布,研究细胞内淀粉粒的含量。

It is the first time that these phenomena were observed: Two nuclei are surrounded by plasma and locate at the central of the female gametophyte and the others nuclei are positioned at the fringe of the female gametophyte; Before the pollen tube enters the female gametophyte. the nuclei in chalazal end begin splitting of plasma and form multinuclear cell.4. The pollens of Gnetumc are spherical or applanate with single aperture. The ornamentation of exine is spine. The basis part of spine is lenience and the top part of spine is tip or obtuse sphere.

首次在买麻藤属植物的雌配子体中观察到2个游离核位于配子体的中央位置,且被一团原生质所包围的,其余的游离核位于边缘的现象以及花粉管进入雌配子体前,合点端的核已经发生胞质分裂形成多核细胞的现象 4、买麻藤的花粉近球形或扁平型,有单萌发孔,外壁表面具小刺状纹饰,小刺基部宽大,末端尖或钝圆。

Dendrocalamus sinicus ; reproductive organs ; megasporogenesis ; microsporogenesis ; male gametophyte ; female gametophyte

巨龙竹;生殖器官;大孢子发生;小孢子发生;雄配子体;雌配子体

The temperature affects the development time of female gametophyte. The time from sporogenous cell observed to formating of female gametophyte needs 14 days at high temperature, but it needs about 20 days at low temperature.

温度影响雌配子体的发育时间,从观察到造胞细胞到雌配子体形成在高温条件下需14d左右,在低温条件下需20d左右。

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