查询词典 root tip

Genotoxicity of ethylicin and bismerthiazol on Vicia faba root tip cells was studied.

利用蚕豆根尖微核技术研究农药乙蒜素和细菌溴腈对蚕豆根尖细胞的遗传损伤，测定蚕豆根尖细胞的微核率、有丝分裂指数和染色体畸变率。

Cell genetics toxic effect of heavy metals on Vicia faba and the discuss on micronucleus test in Vicia faba root tip cell .

重金属对蚕豆的细胞遗传学毒理作用和对蚕豆根尖微核技术的探讨。

GIM,on the one hand,is presented to simulate the interphase,and on the otherhand,is used to obtain the usual square-root singularity rather than the oscillatorysingularity near the crack tip.

本文所给出的广义界面层模型一方面模拟了界面相；另一方面消除了裂纹尖端附近的应力振荡奇异性。

Lactuca indica is a good pasture resource, mature period is a key for L. indica being used effectively. In this paper, the root tip of L.

苦荬莱Lactuca indica是一种优良的牧草种质资源，热期是苦荬菜利用的重要影响因素之一。

Undifferentiated tissue from which new cells are formed, as at the tip of a stem or root meristematic

分节的，分成体节的 meritn。功绩，价值，真相

METHODS:The micronucleus test of Vicia faba root tip cell was used to detect the water quality,and to survey the chemical oxygen demand.The micronuclear rates and Pollution Index were determined and the F-test was used to evaluate the difference in micronuclear rates among different samples.

材料与方法：用蚕豆根尖细胞微核技术对各采样点水样进行监测，并对各水样进行化学需氧量(chemical oxygen demand，CODcr)的测定，统计分析各采样点水样的蚕豆根尖细胞微核千分率及污染指数。

The experimental results show:(1) The water in South Fei River has been comtaminated, especially in industrial and residential part.(2)Vicia faba(QI_1) is sensitive to mutagen, and liner relation between the freguency of micronuclear cell in the root tip cells of Vicia faba(QI_1)and concentration ...

结果表明，南淝河水体已被污染，尤其以工业区和居民生活区污染严重；启豆Ⅰ号对诱变物反应敏感，水环境中污染物浓度与微核千分率呈线性相关，因此启豆Ⅰ号作为微核监测技术的实验材料是可靠的。

But the mitotic index of root tip cells decreased at different degrees with dose increased.

但随着γ线辐照剂量的增加，根尖细胞有丝分裂指数呈不同程度的下降趋势。

The extensive variation in chromosome number in root tip cells of three Chinese cabbage-cabbage monosomic alien addition lines with 21 chromosomes, 6-2-4, c-2-4 and d6, was obsevered after vegetative propagation multi-generations. The chromosome number varied from 17 to more than 50. The 25S rDNA signals were very complex in the three different clones.

染色体数目为21条的3个大白菜-结球甘蓝单体异附加系6-2-4、c-2-4和d6，在无性繁殖多代后根尖细胞均出现了广泛的染色体数目变异的现象，变异范围从17条到50多条不等，25S rDNA在这些无性系的FISH杂交信号较为复杂。

Root tip generally became shorter and thicker because the aqueous extracts of B. pilosa could accelerate periclinal divisions and increased cell layers of the maturation zone and inhibit cell elongation.

三叶鬼针草水浸提液抑制了细胞有丝分裂的正常进行，并随着水浸提液质量分数的升高，分裂期细胞数目下降，微核率逐渐升高。

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。