查询词典 ovule

Temporally, rhizobium abundance in root and pericarp is obviously higher at pod-bearing stage than any other growth stage. Rhizobium abundance in various floral organs rapidly increases after pollination. During ovary-to-legume germinative process, rhizobium abundance in ovary wall and ovule increases logarithmically. Endogenous rhizobia are found in ovule only after fertilization, and rhizobium abundance in young seeds is higher than in fertilized ovule. This implies that endogenous rhizobia can be transported and colonized in early germinated seedlings.

在时间上，结荚期根、荚果皮内的根瘤菌数量明显高于其他时期；花内各器官在授粉后根瘤菌数量迅速增加；由子房向荚果发育的过程中，子房壁和胚珠内的根瘤菌数量随时间呈对数增长；胚珠在受精后即存在有内生根瘤菌，并且幼嫩种子内生根瘤菌数量远高于受精胚珠，证明内生根瘤菌能被转运并定殖在发育早期的种子中。

The development of anther and ovule followed the finish of the flower organ initiation. Pollen mother cells and well developed microsporagium wall occurred when the diameter of the bud reached about 3.0 mm, and the archesporial cell which played the role of megaspore mother cell formed in ovule when the diameter of the bud reached about 3.5 mm.

花药及胚珠的发育与花器官的形态发生之间有明显的连续性，当花蕾直径为3.0 mm左右时花粉母细胞及完整的花粉囊壁形成，直径达到3.5 mm左右时胚珠中出现孢原细胞的分化，它直接起大孢子母细胞的功能。

Bead the one part of the ovule that be, ovule You Zhubing, bead composition of place of the nucellus that be mixed.

珠被为胚珠的一部分，胚珠由珠柄。珠被和珠心所组成。

DNA content per ovule would be gradually increased with the development of ovule.

RNA的含量变化总体趋势与DNA相似，但DNA含量的变化先于RNA。

The ovary of Phyllostachys praecox had one anatropous ovule. The crassinucellate ovule had diploid integuments. The monosporic embryo sac had one tetrad which turned on line and many antipodal cells. The synergid had the obvious filiform appratus.

3雷竹子房1室，内具1个倒生胚珠；双珠被，厚珠心；蓼型胚囊，单孢发育，线形大孢子四分体，具多个反足细胞，助细胞具明显丝状器。

The embryological studies of strawberry showed that the ovule of strawberry were hemitropous, the ovule had the obvious hypostace structure, the type of its embryo sac was Polygonum, the embryo sac was long and narrow, the type of development of embryo was the Geum type of the Asterad type, the endosperm was Nuclear type and the somatic embryo sacs happened The integral transparency technique combined with the technique of microdissection was used in this experiment The combination was an innovation in the techniques of section.

对草莓胚胎学的研究结果表明：草莓胚珠横生、胚珠具明显的承珠盘结构、胚囊发育为蓼型、胚囊狭长、胚胎发育为紫菀型水杨梅类型、胚乳核型、并有体细胞胚囊的产生。试验中采用了多种制片方法，其中将整体透明技术和显微解剖技术相结合的方法是在制片技术上的一次创新。

It is also suggested that the correlations between pollen-ovule ratio and pollen size , and ovule size should be accounted for in terms of sex allocation theory. During this project, no other effective pollinators except bumblebees and no species-specific pollinator have been observed for all kinds of Pedicularis species.

花粉胚珠比与配子体投资的相关性是植物自身为获得生殖成功，对资源在两性性功能的配置重新调整的结果，性配置理论可以很好的解释这些关系。

No morphological difference was observed between embryos gained from ovule culture and embryos grown in planta, indicating that the in vitro ovule culture system phenocopies the in planta developmental program of embryogenesis.

体外培养形成的胚珠及胚胎在形态上与自然状态下形成的胚珠及胚胎几乎没有差异。

At the same time,some ovule-specific cDNA clones in Orchid and Petunia flowers had been isolated and among them MADS Box genes may be responsible for the ovule differentiation and formation.

同时，已分别从蝶兰和矮牵牛的胚珠中分离出一批胚珠发育特异的基因，其中有关MADS Box 基因在胚珠形成和发育中的作用研究得比较清楚，基因转化工作证实胚珠的分化和形成受一类新的MADS Box基因控制。

Canonical correlation coefficient and principal component analysis of hormone contents in leaf and ovule at certain flowering period with some fiber straits were conducted by using 35 variation lines with same genetic background.

对具有同一遗传背景的35份变异材料，在特定生育时期，进行了叶片和胚珠内源激素含量与其纤维性状的典型相关和主成分分析。

I can not negligent, he should do what?

我不能不在意了，他要做什么呢？

It is very dangerous to swim in the river alone.

一个人到河里游泳是很危险的。