四倍的

Compared with diploidy , the seedlings of Pasthyrostachys juncea with tetraploidy have stronger viability , higher nutrient contents and better tolerance of lower temperature , drought and other extremely environments .

与二倍体新麦草相比，染色体加倍后的四倍体新麦草的种苗生活力强，种子营养成分含量高，对低温，干旱等极端环境的适应能力强。

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。

The distribution of hybrid chlorosis Ch1 gene and the T-type cytoplasm fertility restoring genes in Chinese endemic wheats were studied using the testors QA1104 (T-type cytoplasm sterile line, with hybrid chlorosis Ch2 gene) and Khapli emmer (with hybrid chlorosis Ch1 gene).

本研究以T型不育系QA1104（具有杂种黄化基因Ch2）和Khapli（具有杂种黄化基因Ch1）为测验种，对中国特有小麦等六倍体小麦类型和一些四倍体小麦类型中的T型胞质育性恢复基因和杂种黄化Ch1基因的分布进行了研究。

The tetraploid plants and the diploid plants were also compared morphologically and cytologically.

对诱变的四倍体和二倍体进行了形态学、细胞学的比较。

The present paper compared the major storage proteins in starchy endosperm of four autotetraploid rice lines with that of their corresponding diploid rice lines. The content of albumin, globulin, prolamin and glutelin in each sample was determined respectively.

以4份同源四倍体水稻和4份相应的二倍体水稻为研究材料，对其种子内清、球蛋白、醇溶蛋白和谷蛋白的含量进行了测定，利用聚丙烯酰胺凝胶电泳技术分析了其特异性。

Polymorphism in diploid species G.arboreum was the same as in tetraploid species G.hirsutum,both were 11.84%.

在二倍体棉种中棉的扩增多态性率为11.84%，与在四倍体棉种陆地棉的扩增多态性率相同。

In contrast to the granular shape papillaes around the stomata and less density of trichoma on costal zones in tetraploidies of O. officinalis, the triangle and overarching shape papillaes, and denser trachoma were observed in diploidies.

在O。 officinalis中，四倍体有粒状气孔器外围乳突和脉带表皮毛较少，二倍体细胞型具有三角形拱状排列的气孔器外围乳突和较密集的脉带表皮毛；而在O。

Chloroplast size was bigger and grana stack was thicker in tetraploid than that in diploid.

四倍体的叶绿体的长度和宽度均显著高于二倍体，基粒片层加厚，结构致密有序。

The efficiency of the machines has been more than trebled or quadrupled.

这些机器的效率是原来的三倍或四倍多。

It also reported that cells treated with edelfosine came through the whole cell cycle without nuclei cleavage, and cells were blocked in G_0/G_1 and subsequent formation of quadplex or octploid nuclei. However, the mechanism still is unknown that edelfosine inhibits cytokinesis.

也有报告指出，依地福新处理过的细胞能经历完全的细胞周期，但不能进行分裂，使细胞聚集在G_0／G_1期，形成四倍体或八倍体细胞。

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。