Trans-zeatin is a kind of purine plant cytokinin. It was originally found and isolated from young corn cobs. It is an endogenous plant growth regulator in plants. It not only promotes the growth of lateral buds, stimulates Cell differentiation (lateral advantage), promotes the germination of callus and seeds, but also prevents leaf senescence, reverses toxin damage to the buds and inhibits excessive root formation. High concentration of zeatin can also produce adventitious bud differentiation.