Cytokinin

Cytokinin

It is a plant growth substance that stimulates cell division. This was isolated through Miller and Skoog in the year 1954 from Herring fish. Following the innovation of kinetin several other compounds displaying identical activity were discovered. These are jointly known as cytokinins. The cytokinin available in the zea mays is known as zeatin. Cytokinin is as well found in the endosperm of coconut. Cytokinin takes place in several seed plants. They are found specifically in embryos, developing roots and fruits. Changeable mixtures of auxin and cytokinin affect growth of the plant and differentiation.

Physiological effects of cytokinin:

1. The most significant task of cytokinin is the promotion of cell division.
2. In relationship with IAA, cytokinin initiates bud and root creation in callus tissue.
3. External application of cytokinin promotes the growth of lateral buds while the apical bud is intact.
4. Cytokinin breaks the dormancy of several seeds and as well promotes germination.
5. Application of cytokinin delays the procedure of ageing in plants. This is as well termed as Richmond Lang effect.

 

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