pollen grain的例句大全

It had snow-melting-like veins on the surface of pollen grain with several hollows.

萌发孔沟多为3对(顶分体3条,侧分体各对应1条),以四面体几何中轴为中心,中心对称分布于四面体的3个侧面.

Study on the pollen grain microstructure of new azalea hybrids and their parents

赛玉铃杂交杜鹃新品系代表种与双亲花粉微观结构研究

The globose mature pollen grain is the 2-celled type, with three grooves.

成熟花粉具2细胞，呈球形，3沟孔。

The characteristics of pollen grain are related with the distribution of Gnetum and classified system of subgenus. 5.

买麻藤属植物孢粉学特征与地理分布及属下分类系统有一定的关系。

The mature pollen grain is 2-celled. ( 2) The ovary has 1 locule and there is 1 anatropous ovule in each locule.

成熟花粉为2-细胞型。（2）牛膝菊子房一室，每室一枚倒生胚珠，具单珠被，薄珠心。

The probability of any air-borne pollen grain impacting a female strobilus is in any case very small.

任何在空气中飘浮的花粉粒粘着于雌球花的几率，在任何情况下都是很小的。空气中有浓郁的花香。

Arrangement of microspores in a tetrade is isobilateral shaped The mature pollen grain is 3-celled type, the sperms are crescent shaped.

小孢子在四分体中的排列为等面形。成熟花粉粒为3细胞型，精子为新月形。

The mature pollen grain is 2-cells and the tapetum is secretory type.

成熟花粉粒为二细胞型，绒毡层为分泌绒毡层；

The pollen grain of the two species is researched, and the configuration of pollen are observed and described.

对两种药用植物进行了孢粉学的研究，观察并描述了金银忍冬和金银花的花粉形态。

The ubisch bodies which appeared on the inner tangential wall of the tapetum at the time of microspore wall formation are partially remain on the surface of matured pollen grain.

小孢子壁形成时开始在绒毡层内切线壁出现的球状体到花粉粒成熟时仍有一部分附着于花粉粒表面。

pollen grains in single flowers of shrub species were found to be almost ten times as many as that of herbs, while the tree species also have higher pollen grain numbers than congeneric shrub species.

对同一属内不同生活型植物的花粉数比较，发现乔木的单花花粉数高于灌木，灌木的单花花粉数明显高于草本。

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。

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。

anther sac including pollen grain, flowered medicine wall two parts.

花粉囊包括花粉粒、花药壁二部分。

active proton pump on the pollen grain membrane drives h+ efflux, hyperpolarize the membrane and triggers signaling transduction.

花粉细胞质膜上存在质子泵，由其活化导致的H+外流可以影响细胞膜电位，引发一系列信号转导过程。

the mature pollen grain belongs to two cells: 1 vegetative cell and 1 germ cell.

成熟花粉粒属于二细胞型：1个营养细胞和1个生殖细胞。

a microscopic fossil, as of a pollen grain or unicellular organism.

微体化石一种微小的化石，如花粉粒或单细胞有机体的化石

formation and development of pollen grain and embryo sac of basella rubra

落葵的花粉粒和胚囊的形成与发育

Pollen grain germination and 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.

We can see spinous pollen grain in the fruit by microscope.

显微观察可见,果中的刺球状花粉粒最为显著.