pollen tube

花粉管

常用释义

词性释义

n.

[植] 花粉管
例句
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Since the transgenic technology of pollen tube pathway method was formally established, it has been widely used in crop genetic improvement.
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.
In a gametophytic interaction, the pollen germinates and the growing pollen tube is recognized by the female plant, normally in the style.
Enhanced vesicle trafficking is also essential for pollen tube elongation as many molecules must be translocated to the growing tip.
In gametophytic SI, glycoproteins with ribonuclease activity are produced by the S gene, perhaps disabling RNA at the pollen tube tip.
This indicated that, donor DNA fragment had inserted into receptor through pollen tube, and affected the expression of genes in receptors.
Generative cell One of the haploid cells in the POLLEN TUBE of seed plants.
Porogamy The usual method of fertilization in angiosperms in which the pollen tube enters the ovule by the micropyle. Compare chalazogamy.
Pollen tube is defined as the tube through which pollen passes into the ovary.
The research advance of exogenous DNA introduced into maize by pollen-tube pathway was summarized in this paper.
But that's for the pollen tube to come out later on; a very tiny tube.
In seed plants it is the generative cell in the pollen grain, which divides in the pollen tube to produce two sperm cells.
A serologic reaction retards the growth of the pollen tube.
After entering the pollen tube, the generative cell approached the vegetative nucleus before long and sticked each other.
In the second year, the resting pollen tube revives its activity in the nucellus towards the March.
That little hole in the middle there is for the pollen tube.
S. This is the first time to report this pattern of pollen tube oscillatory growth in plants.
More PCR positive plants could obtain by ovary-drip (4. 5%) than that by pollen tube pathway (2. 0%), when transformation was conducted.
Establishment of a Melon Transformation Technique via the Pollen-tube Pathway Method
it was estimated that exogenous DNA entered into embryo sacs through the pollen-tube pathway;
1·Research on soybean pollen tube pathway was carried out.
对大豆花粉管通道技术进行深入研究。
2·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。
网络释义

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 …
更新时间：2025-05-03 23:53

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