查询词典 root tip

The karyotype analysis shows that the majority of the chromosomes of root-tip cell were monosomic(2n=20Ⅱ+1=41),only minority were disomic and nullisomic(about1%).

进行根尖细胞核型分析，发现大部分为单体（2n＝20Ⅱ＋1Ⅰ＝41），在其中仅看到极少数二体和缺体，比例不到1％。

In the BC〓F〓 and BC〓F〓 generation of Yannong15×Thinopyron intermedium hybrid, 4 octoploids which had chromosome number of 2n=56 and could form 28 bivalent at PMC MI, 14 disomic addition lines which had chromosome number of 2n=44 and could form 22 bivalent at PMC MI; three monosomic addition lines which had chromosome number 2n=43 and had the chromosome configuration of 21Ⅱ+1Ⅰ at PMC MI, 1 substitution line which had chromosome number 2n=42 and could form 21 bivalent at PMC MI were selected by observation of mitosis in root tip cell and meiosis in pollen mother cell.

在烟农15与中间偃麦草杂交的BC〓F〓和BC〓F〓代中，通过根尖有丝分裂和花粉母细胞减数分裂中期Ⅰ观察选出4个2n=56，PMC MI染色体构型为28Ⅱ的八倍体小偃麦；14个2n=44，PMC MI染色体构型为22Ⅱ的双体异附加系；3个2n=43，PMC MI染色体构型为21Ⅱ+1Ⅰ的单体异附加系；1个2n=42，PMC MI染色体构型为21Ⅱ的异代换系。

The cytogenetic toxic effects of different concentration of As2O3 within different time on the cell of Vicia Faba root tip were studied.

本文以蚕豆根尖为材料，研究不同浓度As2O3在不同的处理时间内对蚕豆胚根根尖的细胞遗传学毒性效应。

The aim was to research the genotoxicity of shampoo concentrations of 3 brands to root tip of Vicia faba cell, and provide the reference for genotoxicity of shampoo to human body.

［目的］研究了3个品牌洗发水浓度对蚕豆根尖细胞的遗传毒性效应，为洗发水对人体产生遗传毒性问题的认识提供参考。

Magnesium sulfate has significant genotoxicity to Vicia faba root tip cells.

硫酸镁对蚕豆根尖细胞具有明显的遗传毒性效应。

As the increase of the concentration of magnesium sulfate and time, the micronucleus and the chromosomal aberration of Vicia faba root tip cells increased first and then decreased.

且随着硫酸镁溶液浓度的升高和处理时间的延长，蚕豆根尖细胞的微核率和染色体畸变率均呈先上升后下降的趋势。

It shows that As2O3 has marked cytogenetic toxic effect on the root tip cells of Vicia Faba,and effect of accumulating the metaphases in mitosis.

结论是As2O3对蚕豆根尖细胞具有明显的细胞遗传学毒性效应，并具有积累有丝分裂中期细胞的效应。

The aim was to determine the feasibility of cell micronucleus technique of root tip of Vicia faba on detection of genotoxicity of nitrate and nitrite in food.

［目的］明确蚕豆根尖细胞微核技术检测食品中硝酸盐和亚硝酸盐遗传毒性的可行性。

Besides the rate of micronucleus and chromosome aberration of Vicia faba root tip cells are more than the rate of micronucleus and chromosome aberration of Garlic...

结论是明矾对蚕豆和大蒜根尖均具有明显的细胞遗传学毒性效应，且对蚕豆根尖的毒性效应明显高于对大蒜根尖的毒性效应。

By using random amplified polymorphic DNA technique, this paper studied the effects of Cd stress on DNA polymorphism in root tip of Vicia faba seedlings.

采用随机扩增多态性DNA技术检测镉胁迫对蚕豆幼苗根尖DNA多态性的影响。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。