查询词典 pollen tube

Actinomycin D and tunicamycin inhibited pollen germination in the first hour,however,no reduction of the tube length was observed later.

Linskens(1970)等「SJ和Franki(1980)等【3〕证明成熟花粉中存在体外翻译活性的多核糖体及贮藏mRNA。

There are different opinions of the taxonomy on the subfamily, tribe, genus and species of Umbelliferae because the taxonomic system of Umbelliferae is based on the typical umbrella anthotaxy and its fruit with specific secretory tube. The pollen morphology is carefully observed in this test in order to provide several basic data for the taxa of Ferula and Heracleum.

但是由于伞形科的分类系统是建立在典型的伞形花序和带有特殊分泌管的果实的基础之上的，使得分类学者在亚科、族、属和种的设立和分类方面存在分歧，实验主要针对阿魏属和独活属的花粉形状进行研究，对阿魏属和独活属植物的分类提供一些基础数据。

The increase or decrease of Ca〓 level or inhibition of CaM activity in germinating pollen led to the inhibition of normal catabolism of total, neutral, polar lipids, phospholipids and free fatty acids and disturbance of the normal gemination—induced changes of composition of fatty acids, and finally inhibited pollen germination and tube growth.

提高或降低花粉内Ca〓水平以及使用CaM抑制剂导致正常的脂类和游离脂肪酸分解代谢过程受阻，极性脂脂肪酸组分改变，从而影响花粉的萌发和花粉管的生长。

Integument tube 1.5-2 mm, twisted, curved, or straight often in same plant; bracts of pollen cones in 2 or 3?

珠被筒部1.5-2毫米，扭曲，弄弯，或直的通常在相同植株内；苞片雄球花在2或3？

In this thesis, using Pinus yunnanensis and Nicotiana tabacum pollen as experimental material, we studied the regulation and control of calcium messenger system in pollen germination and tube growth.

我们以云南松和烟草为材料，试图阐明钙信使系统对花粉萌发和花粉管生长的调控。

Pollen germination and tube growth are important events during process of sexual reproduction in higher plants.

花粉萌发和花粉管的生长是高等植物实现有性繁殖的重要保证。

When they were in higher concentrations,they would inhibit pollen germination and tube growth.

萘乙酸对花粉萌发和花粉管生长有抑制作用，抑制程度随培养基内其浓度的增大而加强。

The locomotion of sperm cells from pollen grain into the tube was examined by using the above technique.

用同样的方法，也观察了精细胞在花粉管中的运动。成对的精细胞可以从花粉管中释放出来。

The regulation of pollen germination and tube growth has also been a good model system for studying signal transduction mechanisms in higher plant cells.

花粉的体外萌发和花粉管的定向生长是受复杂的信号传递机制调控的，论文的最后一部分证实了cAMP在花粉管的萌发及生长过程中的作用。

The results show that chemical treatments may be a way of changing germination and tube growth of pollen in Vaccinium ashei.

改善环境条件和化学处理是提高花粉萌发率的有效途径。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。