C - cytokinin 中文 - EN166

cytokinin n.【生物學】細胞激動素。

cytologist
Our results provided direct evidence that pf40 gene play a role in the tissue development , with knockout this gene the lateral buds were not visible . the plant hormones auxin and cytokinin appear to play a major role in controlling this process , therefore , the concertrition of auxin and cytokinin was measured , however , the concentration of the two hormone was variation a little in transgenic plants , but the ratio of the two was more than 5 fold in the pf40 gained function plant than that in wild type . furthermore the pf40 gene effected differentiation of the vascular bundles in different transgenic plants , results showed the pf40 could change both xylary fibers and vessel 進一步的實驗發現pf40基因會影響植物側芽發育的早期，即pf40基因作用在側芽形成與發育的早期。對轉基因谷子的組織切片的分析還表明pf40基因引起不同形式的轉基因谷子的維管組織的發育的差異，轉化正義載體谷子的木質部變多，維管系統增多，而反義或干擾的轉基因谷子的木質部數量變少，木質部分化異常。從轉基因的結果可見pf40基因可以減弱植物的頂端優勢，這種作用是通過改變植物體內激素的含量實現的。
Bap performed more important function than kt in differentiation of tall fescue embryogenic calli , but better results could be achieved with combination of 2mg / l bap and 0 . 5mg / l kt . at this cytokinin level , 0 . 5mg / l naa was recommended to obtain the highest callus regeneration frequency . plant regeneration could be evidently boosted when embryogenic calli were pre - differentiated on high - osmoticum medium with 60g / l sucrose , and / or when the pre - differentiated compact calli were differentiated on differentiation medium solidified with l0g / l agar 高羊茅胚性愈傷組織分化時， bap的作用要比kt大，但2mg lbap與0 . 5mg lkt配合可獲得更佳的效果；在該細胞分裂素水平下，生長素naa用0 . 5mg l ，愈傷組織再生率最高；胚性愈傷組織先在含60g l蔗糖的分化培養基上高滲預分化，以及經高滲預分化后的致密愈傷組織在瓊脂濃度為10g l的分化培養基上分化，能明顯促進愈傷組織的植株再生；在分化培養基中添加脯氨酸導致愈傷組織再生率下降，但同時有減少白化苗再生的趨勢。
In this review three approaches in study of the effects of cytokinins on plant senecence are presented : the analysis of endogenous cytokinins during senescence ; the application of exogenous cytokinins ; and the research on transgenic plants with cytokinin biosynthesis or biodegradation genes 主要從3個方面綜述了細胞分裂素與植物衰老之間的關系，即： ( 1 )植物衰老過程中內源細胞分裂素含量變化： ( 2 )外源細胞分裂素的影響： ( 3 )轉入與細胞分裂素的合成、降解相關的從因對植物衰老產生的影響。
Floral organs have been successfully induced from the regenerated floral buds of ffyacinthus orienralis l . by precisely controlling exogenous hormones in the medium . under high concentration of cytokinin and auxin , the regenerated floral bud produces only tepals 以風信子花被片為外植體，通過控制培養基中細胞分裂素和生長素的濃度，可誘導花芽的再生和控制產生花器官的種類，建立起離體花器官定向控制系統。
Initiation of somatic cells stimulated by cytokinin , division of the initiated somatic cells and succeeding shoot meristem development are three key steps in the process 細胞分裂素誘導體細胞啟動、啟動的體細胞進行分裂和由此引發的莖分生組織發育是這一過程中的3個重要步驟。
Effect of cytokinin spray on early - senescence prevention and yield increase of dry - cultivated rice 噴施細胞分裂素類物質對地膜旱作水稻防衰及增產效應
The influence of cytokinin on multiplication of aloe ' s adventitious bud 細胞分裂素對蘆薈不定芽增殖的影響
Triacanthine, however, has no cytokinin activity, but this appears when it is autoclaved . 三刺皂莢堿雖然沒有細胞激動素活性，但當進行高壓消毒時，就出現了活性。
Substitution of the number 8 carbon and the number 9 nitrogen also destroys activity as a cytokinin . 取代第8位碳和第9位氮，也破壞作為細胞激動素的活性。
In the principal assays, the cytokinin usually in direct contact with the cells affected . 在主要的鑒定法中，細胞激動素通常是和受影響的細胞直接接觸。