pollen tube

花粉管
常用释义
n. [植] 花粉管

扩展信息

花粉管
(dimethyallylamino - 免费文档下载 ... pollen mother cell 花粉母细胞 pollen tube 花粉管 pollen-restoring gene 花粉恢复基因 ...
花粉管法
... (polyethylene glycol) 法、花粉管法(pollen tube) 等。
原叶细胞
... 1 雄配子体： 小孢子→花粉粒→花粉管：2个退化原叶细胞 （pollen tube） 1个生殖细胞→ 2个精子 1个管细胞 1 * 无精子器 …

例句

Since the transgenic technology of pollen tube pathway method was formally established, it has been widely used in crop genetic improvement.

中国学者创立花粉管通道法转基因技术以来，在多种农作物分子育种中得到应用。

本研究通过花粉管通道导入技术将甜高粱总DNA导入优良玉米自交系4112和8902中，并应用RAPD标记技术从导入后代中筛选出变异后代。

The pollen tube may grow down the stylar canal, or it may secrete enzymes that digest the tissue of style, creating a path for the tube.

花粉管可能沿着花柱道向下生长，也可能分泌消化酶分解花柱组织，为花粉管创造一个通道。

在配子体识别系统中，花粉管顶端的核糖体RNA可能被花柱内的这种蛋白质识别而使之失活。

In a gametophytic interaction, the pollen germinates and the growing pollen tube is recognized by the female plant, normally in the style.

在配子体相互作用中，花粉萌发后，通常雌株在花柱中识别生长的花粉管。

Enhanced vesicle trafficking is also essential for pollen tube elongation as many molecules must be translocated to the growing tip.

此外，花粉管的延伸，也需要囊泡将细胞壁的组成分子传送到生长尖端。

In gametophytic SI, glycoproteins with ribonuclease activity are produced by the S gene, perhaps disabling RNA at the pollen tube tip.

在配子体SI中，S基因合成具有RNA酶活性的糖蛋白，可能是该糖蛋白使花粉管的顶端的RNA失活。

本研究结果为花粉管通道法转基因技术在甜瓜上的应用提供了参考依据。

只有当花粉与柱头组织相一致时，花粉粒才会萌发，产生花粉管。

This indicated that, donor DNA fragment had inserted into receptor through pollen tube, and affected the expression of genes in receptors.

表明供体DNA片段已通过花粉管通道进入受体，并对受体基因的表达产生影响。

Generative cell One of the haploid cells in the POLLEN TUBE of seed plants.

是位于种子植物花粉管中的一个单倍体细胞。

卵子表面上使花粉管穿入的小口。

Porogamy The usual method of fertilization in angiosperms in which the pollen tube enters the ovule by the micropyle. Compare chalazogamy.

被子植物通常的受精方式。花粉管通过珠孔进入胚珠。比较。

另外的粉管核会在花粉管穿过珠心时发生分裂。

Pollen tube is defined as the tube through which pollen passes into the ovary.

花粉管定义为花粉进入子房的管道。

The research advance of exogenous DNA introduced into maize by pollen-tube pathway was summarized in this paper.

综述了外源DNA通过花粉管通道导入玉米的研究进展。

But that's for the pollen tube to come out later on; a very tiny tube.

那是花粉管日后长出来的地方非常细的小管。

In seed plants it is the generative cell in the pollen grain, which divides in the pollen tube to produce two sperm cells.

在种子植物中，它是在花粉粒中的生殖细胞，可以在花粉管内分裂形成两个精子。

紫薇受粉习性及花粉管生长的研究。

禾本科植物的花粉管在柱头的表面被果胶质和胼胝质堵塞。

A serologic reaction retards the growth of the pollen tube.

血清反应阻止花粉管生长。

刚刚形成的花粉管中，被膜小泡主要来自于花粉粒营养细胞的细胞质。

After entering the pollen tube, the generative cell approached the vegetative nucleus before long and sticked each other.

当生殖细胞进人花粉管后，在较短的时间内接近营养核，并与其相贴合。

In the second year, the resting pollen tube revives its activity in the nucellus towards the March.

第二年三月，休眠的花粉管在珠心内恢复活动，四月形成二个不等的雄配子。

That little hole in the middle there is for the pollen tube.

中间那个小洞是长出花粉管的地方。

S. This is the first time to report this pattern of pollen tube oscillatory growth in plants.

这种振荡生长方式在其它种类花粉管中没有报道。

More PCR positive plants could obtain by ovary-drip (4. 5%) than that by pollen tube pathway (2. 0%), when transformation was conducted.

实际转化操作表明，子房滴注转化法的PCR阳性率（4.5%）要高于花粉管通道法（2.0%）。

DNA浓度及注射时间对苹果花粉管通道法基因转化率的影响

Establishment of a Melon Transformation Technique via the Pollen-tube Pathway Method

花粉管通道法转基因技术在甜瓜品种河套蜜瓜上的应用

it was estimated that exogenous DNA entered into embryo sacs through the pollen-tube pathway;

推测外源DNA沿花粉管延伸过程中形成的花粉管通道进入胚囊；