ITEM NAME:30g Cytokinin Plant Hormones Improve Vegetable Flower Fruit Tree Better Prod TE.Many synthetic cytokinins are also available in the market, ex., 6-Benzyl amino purine, 6-Phenyl amino purine and many others. Cytokinins act on the cells that produce it- ‘Autocrine’ system. Cytokinins can be irreversibly degraded by oxidative cleavage.