Some major plant hormones and their action are given in the following table. Major plant hormones and their action.
| Hormones |
Uses |
| Abscisic acid |
Closing of stomata; seed dormancy. |
| Auxins |
Cell elongation and differentiation of shoots and roots. |
| Cytokinins |
Promote cell division, promotion of sprouting of lateral buds, delaying the ageing in leaves, opening of stomata. |
| Ethylene |
Ripening of fruit. |
| Gibberellins |
Germination of seeds and sprouting of buds; elongation of stems; stimulation of flowering; development of fruit, breaking the dormancy in seeds and buds. |
