细胞分裂

Plant hormones include ethylene, abscisin, auxins, gibberellins, and cytokinins.

植物激素有脱落素、生长激素、赤霉素与细胞分裂素。

So acertain concentration of auxins is important to the induction of embryonic callus, and cytokinins are cooperative in the process of somatic embryo genesis and embryoid growth.

因此，一定浓度的生长素是诱导紫叶酢浆草胚性愈伤组织的关键因素，细胞分裂素在体细胞胚的发生和发育过程中起增效作用。

So a certain concentration of auxins was important to the induction of embryonic callus. Cytokinins were cooperative in the process of somatic embryo genesis and embryoid growth.

因此，一定浓度的生长素是诱导紫叶酢浆草胚性愈伤组织的关键因素，细胞分裂素在体细胞胚的发生和发育过程中起增效作用。

Cytokinins move through the plant less readily than auxins or gibberellins and appear to move in opposition to auxins—from root upward to shoot, not shoot downward to root.

细胞分裂素不像生长激素或者赤霉素那样容易移动，看起来他们和生长激素移动的方向相反——从根部到芽，而不是由芽到根部。

Comparing with BA,0 1 mg·L -1 TDZ was more effective in inducing germination and development of buds,regenerating prolific caespitose buds via organogenesis,promoting rhizogenesis and improving acclimation efficiency.

Mok等[2 ] 首次发现TDZ有很强的细胞分裂素活性，浓度很低的TDZ能促进利马豆愈伤组织生长。

Comparing as BA, 0.1mg·L〓 TDZ was more effective in inducing germinating and developing of buds, regenerating prolific caespitose buds via organogenesis, promoting rhizogenesis and activity of root system greatly, as a result, acclimation survival rate was improved significantly. When leaf segments, cut from in vitro plantlets, were placed on MS media containing 0.1mg·L〓 TDZ, adventitious buds regenerated from segments. After transferred to propagated and rooted media, adventitious buds would proliferate and come into full plantlets.

与BA相比，TDZ的细胞分裂素活性至少高出一个数量级，0.1mg·L〓的TDZ能有效地诱导四个基因型芋茎尖的萌动、生长、大量增殖丛生芽，促进试管苗根系发生，将根系活力提高2倍以上，显著提高了试管苗的驯化成活率；浓度为0.01mg·L〓的TDZ能诱导魁芋类型的芋离体叶片切块产生再生芽点，转接后可增殖不定芽并形成再生植株。

Movements. During cell division, microtubules of the spindle assembled from tubutin subunits near organelles called centrioles move the chromosomes.

在细胞分裂期间，中心粒周围的由微管蛋白亚基装配形成的纺锤体微管移向染色体。

But water, minerals and growth hormones called cytokinins continue to flow up to the canopy.

但是，水，矿物质和生长激素所谓的细胞分裂素继续流入最多的树冠。

Cytokinins are one of the major classes of plant hormones, which play the important roles to control or regulate...

细胞分裂素是一类重要的植物激素，它参与调节许多植物的生命活动过程。

In differentiation culture,the suitable kinds of cytokinins needed for different materia...

在分化培养中，不同材料所需的细胞分裂素适宜种类需要通过试验来确定。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。