查询词典 tetraploid

In conclusion, finding presented in this study will be contributory to the development of the tetraploid molluscs production technique.

本研究成果对贝类四倍体技术的完善和发展具有重要的指导意义。

Thus,it is important that elucidate the genetic control of the crossability of Chinese tetraploid wheat with rye.

因此，研究中国四倍体小麦的亲和性问题具有特殊的意义。

The results showed that meiosis of the tetraploid melon was similar to that of diploid melon with some special behaviors.

结果表明：同源四倍体甜瓜花粉母细胞减数分裂过程与二倍体类似，但有其特殊性。

This paper also discusses the mechanism of occurrence of these aberrant embryos and discusses their relationship to diploid–tetraploid mosaicism.

文章也讨论了这种异常胚胎的发生机制，以及它与二倍体－四倍体嵌合体的关系。

Tetraploid plants exhibited sighificant difference in morphology of flowers,pollens,stomates,shape and size of seeds and fruits comparted with the diploidy.

四倍体植株在花冠、气孔、花粉、种子和果实的形态和大小方面均与二倍体植株表现出明显的差异。

Compared with diploidy seedlings of P.elongate,leaf length and stomata size of tetraploid becomes bigger,the leaf length/width ratio and stomata density becomes smaller.

变异植株叶片比二倍体大，叶片长宽比变小，叶片单个气孔变大，气孔密度变小。

Soybean evolution from the ancient tetraploid flowers pollinate crops since the diplont, low level of genetic variation within species, genome larger and contains extensive areas of reproduction and rich repeat sequences, chromosome and small cells to carry out genetic research, which makes soybean genetic map study clearly behind other cr...

大豆是由古四倍体演变而来的二倍体自花授粉作物，种内遗传变异程度低，基因组较大并含有广泛的复制区和丰富的重复序列，染色体又很小，难于进行细胞遗传学研究，这使得大豆遗传作图研究明显落后于其它作物。

Their water use efficiency exceed that of duplation clone under drought stress, which show that tetraploid clones have more yield at the same irrigation.

两个四倍体品种的水分利用效率无论在哪种干旱处理方式下都显著优于二倍体，说明在同等供水条件下，四倍体品种有较大的生物量产出。

The varieties of sorghum which were diffused through the Islamic world after the Arab conquests appear to have come from India, since they were all the tetraploid Sorghum durra , which was developed in the sub-continent.

阿拉伯人占领此地区后，在伊斯兰世界扩散的高粱品种似乎是来自印度，因为它们都是生长在南亚次大陆的四倍体高粱。

The embryonic vessels failed to invade into the labyrinthine layer of placenta, which impaired the embryonic-maternal vascular connection. These defects could not be rescued by wild-type tetraploid blastocysts, excluding the possibility that they were due to the extraembryonic tissues.

组织免疫组化分析结果显示：毛细血管腔异常扩张，排列紊乱，不能形成大血管及细致有序的血管网络；胚外中胚层来源的卵黄囊脏层扁平上皮细胞形态变圆，与内皮细胞连接受损；胚胎血管不能侵入胎盘迷路层，胚体与母体血管连接受损。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。