Cytokinin is a plant hormone that promotes cell division and growth, as well as differentiation of different types of cells. It works by counteracting the effects of abscisic acid, which slows growth and development in plants. Cytokinin is produced in the root tips and the shoot apical meristem, and its production is increased by light. It is found in many plants, and is involved in processes such as seed germination, root initiation, leaf expansion, and flowering. It is also involved in the regulation of auxin, which is important for plant growth and development.
citokinin, cytokynin