| 释义 |
pollen tube ˈpɒləntjuːb 短语¹⁸⁰⁰⁹⁸⁺¹
基本英英例句例句
花粉管
Noun:
botany a slender tubular outgrowth from a pollen grain when deposited on the stigma for a flower; it penetrates the style and conveys the male gametes to the ovuleA serologic reaction retards the growth of thepollen tube.血清反应阻止花粉管生长。
Activation of nucellar cells by discharge from the pollen tubes has been claimed.认为由花粉管的流出物能使珠心细胞活化。 In the grassesand possibly some members of the nightshade family, Solanaceae the germinating pollen tube is blocked before it penetrates the stigma or just as it starts.
禾本科植物，可能还有茄科的一些植物萌发的花粉管在穿透柱头之前或刚刚穿透柱头时就会被堵塞。 jxzy.lynu.edu.cn
In the grasses the pollen tube is blocked at the stigma surface with pectins and callose.
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。 jxzy.lynu.edu.cn
The pollen tube germinates from pollen and, during its migration, it perceives and responds to guidance cues from maternal tissue and from the female gametophyte.
植物从水生向陆生进化过程中，精细胞丧失了运动能力，需要依靠花粉管把它递送到雌配子体——胚囊中与卵子融合，完成受精。 biodiscover
The damage of the cytoskeleton system in the pollen and the pollen tube of Pinus thunbergii induced by ion beam implantation were researched.
以黑松花粉粒和花粉管为试验材料，研究了离子注入对细胞骨架系统的损伤效应。 dictall
The pollen tube has many types and the length of pollen tube is related to the germination time as linear and to the sucrose concentration as cubic parabola.
马尾松花粉管有着不同的类型。花粉管生长长度与置床时间呈线性关系，与蔗糖浓度呈三次抛物线关系。 cnki
An ease and rapid procedure had been developed for the observation of pollen structure and the demonstration of nuclei in pollen and pollen tube with LSCM.
建立了一种快速简便的适于在激光扫描共聚焦显微镜下观察花粉和花粉管中成员细胞结构及其细胞核的状态、行为的制片技术； cnki
By using pollen tube pathway, antibacterial peptide DAP D gene developed from Chinese oak silkworm was transferred into tomato.
用花粉管通道法将柞蚕抗菌肽 D基因导入番茄，获得了转基因植株。 cnki
Certain concentration of sucrose solution is helpful to growth of pollen tube; both 10% and 20% sucrose solutions can significantly increase elongation velocity of pollen tube.
一定浓度的蔗糖溶液有助于花粉管的生长，10%、20%蔗糖浓度均能显著提高花粉管伸长速度。 cnki
In some self- incompatible plants the pollen tube reaches the ovule but the ovule aborts, either because fertilization fails or because the ovule aborts at an early stage after fertilization.
某些自交不亲和植物的花粉管能到达胚珠，但胚珠败育，这其中有的是由于受精失败，有的是由于受精后的早期胚珠败育。 jxzy.lynu.edu.cn
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。 dictall
The advance on microfilament cytoskeleton in plant pollen tube and guard cells, and signal transduction involving in plant microfilament cytoskeleton were simply illustrated in this paper.
文章就植物花粉管、保卫细胞中微丝骨架以及微丝骨架与信号转导的一些研究进展作了简要介绍。 cnki
This is a little known group of SI systems in which the pollen tube reaches the ovule but the ovule aborts.
现在对后作用系统的了解不多，在后作用系统中，虽然花粉管到达胚珠，但胚珠败育。 jxzy.lynu.edu.cn
This study reports that wild soybean DNA was introduced into cultivar soybean through pollen tube after soybean self- fertilizing, it led to wide variation in offspring characteristics.
本文利用花粉管通道在大豆自花受粉后，将野生大豆 DNA导入栽培大豆，从而引起了后代性状的广泛变异。 cnki
Using the vector pNPR1, On this basis, using the pollen tube pathway, after PCR and disease resistance detect, we gain some verticillium resistant cotton lines.
并以此为基础，利用花粉管通道法转化棉花，经 PCR检测和病圃筛选，得到了抗黄萎病棉花株系。 fabiao
With the method of polyacrylamide gel electrophoresis analysis of the peroxidase patterns in variant progenies of soybean obtained by introduction of DNA through pollen tube.
本文采用聚丙烯酰胺凝胶电泳的方法，对利用花粉管通道途径，导入外源DNA所获大豆变异后代，进行过氧化物酶酶谱分析。 cnki
Pollen tube was very small.
花粉管细小或畸形； cnki
Pollen grain germination and pollen tube growth were investigated in intergeneric crosses between Brassica species and O.
本文对诸葛菜和芸苔属属间杂交的花粉粒萌发和花粉管生长情况进行了研究。 zidian8 |