vascular plant · terminal bud · simple leaf · sea weed · sage brush · petrified wood · opposite leaves · lateral bud · lanceolate leaf · incomplete flower

BACKGROUND AND AIM: We studied the mutation effects of sodium sulfite and sodium nitrite in root tip cells of Vicia faba.

背景與目的：研究亞硫酸鈉和亞硝酸鈉對(duì)蠶豆根尖細(xì)胞的致突變作用。

The structure of root tip of sugarbeet and its differentiatienal process of the primary tissue were reported in this paper.

本文報(bào)導(dǎo)了甜菜根尖的結(jié)構(gòu)與初生組織分化的過程网站观看jizz。

So these results maybe imply the presence of complete BR biosynthetic pathway in maize root, especially in root tip .

因此我們推測男人的天堂在线播放，BR的生物合成可能主要在玉米的根中，尤其是根尖進(jìn)行欧美业余性爱。

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

本文以蠶豆根尖為材料欧美黄片在线播放，研究不同濃度As2O3在不同的處理時(shí)間內(nèi)對(duì)蠶豆胚根根尖的細(xì)胞遺傳學(xué)毒性效應(yīng)。

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

但隨著γ線輻照劑量的增加不卡黄色网，根尖細(xì)胞有絲分裂指數(shù)呈不同程度的下降趨勢6080亚洲三片级。

root tip：根尖

(1)根尖 根尖(root tip)指的是主根或側(cè)根的尖端,是根的最幼嫩18岁禁网、生命活動(dòng)最旺盛的部分人人摸人人看人人插、也是根生長、延長以及吸收水液的主要部分. 無論一年生或多年生植物,根尖都包含根冠深夜在线观看网站、分生區(qū)、延長區(qū)和成熟區(qū)4個(gè)從頂端向后順序排列的部分(見圖).

root tip：根頭

root thorn 根剌 | root tip 根頭 | root tubercle 根瘤

root tip：根部頂端

~ Rib-cage model 肋骨籃模型 | ~ Root tip 根部頂端 | ~ Skin, enlarged, histological structure 皮膚組織

root tip squash：根端壓片,根尖壓片

root pressure 根壓 | root tip squash 根端壓片,根尖壓片 | root tuber 塊根

root tip chromosomes：根尖染色體

root tip ==> 根尖 | root tip chromosomes ==> 根尖染色體 | root tips of mature embryos ==> 成熟胚的根尖