查询词典 pollen

In pollen, from the model plant mouse-ear cress, a reduction in TUDOR-SN leads to fragmentation of DNA and premature cell death.

现在，一国际研究团队发现，植物和动物中决定细胞程序性死亡的遗传学过程实际上是进化相关的，并且用相同的方式执行功能。

Being light and produced in large numbers, pollen grains can be more easily reaching the stigma of another flower so as to achieve cross-fertilization.

花粉粒，因轻而数目够大量，它能够容易到达另一株植物的柱头，以达至异花传粉的目的。

What we do know is that exposure to indoor allergens, pollen, animal dander, grass ...

我们所知道的是，接触室内过敏原，花粉，动物皮屑，草。。。

Pollen morphology of Chinese Datura and its taxonomic significance.

我国曼陀罗属的花粉形态及其在分类上的意义。

Since the success in induction of Datura innoxia pollen plants through an-ther culture was achieved by Guha ...

花药培养自1964年由Guha和Maheshwari首次获得花粉植株以来，受到各国学者的普遍重视。

It is of particular importance for interpretation of deep-sea pollen records.

对深海花粉来说，这个问题尤为重要。

At diakinesis, 0.2 tetravalents, 0.05 hexavalents and 0.05 octovalents per pollen mother cell were detected, which was absent in cultivated cucumber. In 30% PMCs, crossed chromosomes occurred at diakinesis.

在减数分裂终变期，平均每个花粉母细胞有0.2个四价体、0.05个六价体和0.05个八价体，约30%的花粉母细胞中存在拉十字的染色体。

There are nine bivalents in pollen mother cells at late diplotene or early diakinesis, and the homologous chromosomes essentially arrange on the equatorial plate at late metaphase Ⅰor early anaphase Ⅰ, then the two homologous chromosomes of each bivalent separate from each other and move to two opposite poles drawn by spindle fibers.

在减数分裂双线期末或终变期初，可以观察到9个二价体，在中期I末至后期I初，同源染色体基本排列在赤道板上，然后在纺锤丝的牵引下二价体的两条同源染色体分开，分别移向两极，每一极有9条染色体，从而确认该属植物的染色体基数为x=9。

The species has following traits in morphology and flowering phenology:dichogamy flowering habit,medial aromatic flowers,dime greenlish petalum,sticky pollen,extrose anthera,and wet stigma.

该种呈现以下的形态和开花物候特点：雌雄异熟，花冠中等大小而具香味、花被暗绿色，花粉有粘性，外向花药，湿型柱头。

Pollen dimorphism and bubble4ike protrusions were found in Spiradiclis.

此外，本属植物的花粉具有花粉2型和"芽状"结构的现象。

This paper designs the communication system of radio telescope FAST.

针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。