Plant cytokinin application on orange Lin Zhang (Taizhou, Zhejiang Huangyan 317,400 agricultural school) cytokinin is a kind of cell division and differentiation of plant hormones play an important role mitogen and having mobilize tree nutrition, delaying organ aging and other functions. Since the 1940s it was discovered and recognizes its role since the synthetic cytokinin currently has more than ten species. Five plant hormone cytokinin is the youngest member of the plant mitogen manufacturer, since 1955. Miller, Skoog et al found from herring sperm DNA degradation in plant mitogen until now, but twenty years. Although kinetin --6- furan diaminopurine was first discovered active substances stimulate cell division plant mitogen, but so far it has not found naturally in plant cells. But it was discovered from a large number of exploration in many young plant organs, cytokinins stimulate cell division there is substance. 63 years Letham first extracted from sweet corn grain filling stage and crystallized active substance named zeatin (Zeatin). Plant cytokinin | Marvell Biotechnology (Online) | Taizhou mitogen provided by Shouguang Marvell biotechnology company. Shouguang Marvell Biotechnology Limited (www.maiweishengwu.com) Shandong Weifang biological fertilizer leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Marvell leader in biotechnology with the staff warmly welcome all inquiries negotiations to create Marvell biotechnology better future.