Overview
Cytokinins are adenine-derived plant hormones essential for regulating growth and development. They were first discovered in the 1950s for their role in promoting cell division in plant tissues. Naturally occurring cytokinins include zeatin and isopentenyladenine, while synthetic variants like kinetin are widely used in labs and agriculture. These compounds work synergistically with auxins to balance plant growth, influencing processes like shoot initiation, leaf expansion, and stress response. In commercial settings, cytokinins are formulated as solutions, powders, or slow-release pellets to suit different applications.
Physical and Chemical Properties
Most cytokinins are stable crystalline solids with low volatility. Their solubility depends on pH; they dissolve better in weakly acidic or alkaline solutions than in neutral water. For instance, kinetin has a solubility of ~50 mg/L in water at 25°C but dissolves readily in dimethyl sulfoxide (DMSO). Thermal stability varies by compound, with decomposition typically occurring above 200°C. UV-Vis spectroscopy often shows absorption peaks at 260-270 nm due to the adenine moiety. Analytical methods like HPLC are used to quantify purity, which is critical for research-grade products (≥95-99%).
Main Applications
In agriculture, cytokinins are applied to improve crop yields by delaying leaf aging and enhancing fruit setting. For example, foliar sprays containing zeatin can increase wheat grain production by 10-15%. They're also vital in plant tissue culture to induce shoot formation when combined with auxins. Biotech industries use cytokinins to modify plant traits via genetic engineering. Recent studies explore their role in stress tolerance, such as drought resistance in rice. Additionally, cosmetic formulations sometimes include kinetin for its anti-aging properties on human skin.
Safety and Storage
Cytokinins pose minimal acute toxicity (LD50 > 2,000 mg/kg in rats) but may cause mild irritation upon prolonged exposure. Always wear gloves and goggles when handling concentrated forms. Store powders in airtight containers with desiccants to prevent moisture absorption. For liquid formulations, avoid freezing and store at 4°C. Shelf life typically ranges from 1-3 years when kept away from light and heat. Dispose of unused material according to local regulations for organic compounds.
B2B Procurement Guide
When sourcing cytokinins, clarify the intended use—agricultural-grade products often contain stabilizers, while research-grade materials prioritize purity. Bulk buyers (1 kg+) can negotiate discounts of 15-30% with manufacturers. Key suppliers include Sigma-Aldrich for lab reagents and Agrochemical companies like Syngenta for field applications. Request certificates of analysis (CoA) for purity and HPLC traces. For international shipments, ensure compliance with phytosanitary regulations. Some derivatives (e.g., 6-BAP) may require special permits due to their use in controlled plant propagation.
Related Manufacturers
- 主营：试剂盒、ELISA试剂盒、科研ELISA试剂盒、PCR试剂盒、生化试剂盒
- 主营：猴细胞分裂素MB、elisa 试剂盒
- 主营：试剂盒、辅激活因子、elisa试剂盒、猴细胞分裂素MB、蛋白、多肽、金标试剂盒、PCR试剂盒、抗生素、氨基酸、血清、抗体
- 主营：保鲜剂、活性炭、色素炭黑、洗涤原料、优级白砂糖、速溶硅酸钠、锅炉水处理、表面活性剂、聚合氯化铝、机油过滤砂、食品级防腐剂、工业级醋酸钠、玻璃钢用炭黑、净水处理絮凝剂
- 主营：架桥剂、YW100 锂萃取剂、端羧基液体丁腈橡胶、10-羟基癸酸、苯乙烯磷酸、肉豆蔻酸镁、硬脂酸钴、全氟三丁胺、乙烯基磷酸二乙酯、磷酸锰铁锂、β-磷酸三钙、十一烯酸、钨酸铝、1-乙炔基环已醇、间二异丙苯、锂硅合金、溴甲酚绿、生物活性玻璃、溴代海因树脂颗粒、红铝、龙涎酮、原丁酸三甲酯
- 主营：有机原料、中间体、香精香料、催化剂、有机硅、表面活性剂
- 主营：高铁酸钾
- 主营：试剂盒、人25羟基维生素、人低氧诱导因子
- 主营：细胞分裂素MBELISAKit、ELISA试剂盒、PCR试剂盒、科研试剂
- 主营：麦芽糖酸、苯氧基环磷腈、甲巯基四氮唑
- 主营：ELISA试剂盒、PCR试剂盒、生化试剂盒、细胞分裂素MBELISAKit、蛋白、抗体、细胞
- 主营：ELISA试剂盒、抗体
- 主营：科研试剂盒、酶免试剂盒、elisa试剂盒、植物细胞分裂素、细胞、生物试剂、进口ELISA试剂盒、PCR试剂盒、生化测试盒
- 主营：醋酸可、杀菌剂、锚固剂、除草剂、洗涤剂、凡士林、硫酸铜、胺鲜酯、柠檬酸、絮凝剂、硫酸铵、增稠剂、糖蜜粉、取暖炉、催化剂、类香精、磷酸钠、漂白粉、防腐剂、洗手液、耐燃烧、叶面肥、桂皮酸、工业车、缓凝剂
- 主营：elisa 试剂盒、Elisa试剂盒、进口试剂盒、细胞分裂素Elisa试剂盒、国产试剂盒、试剂、细胞、ELISA检测试剂盒、酶联免疫法、酶联免疫试剂盒、酶活性检测、酶标仪检测