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5 recognized group of natural plant hormones & growth regulators

1)Auxins :-lengthening of the internodes and

influence the developing embryo in seed

2)Gibberellins :- stimulates cell division,cell elongation & control

enzyme secretion.

3)Cytokinins :-promotes cell division.

4)Ethylene :-this is a gas for senescing ripening fruits,germinating

seeds,wounding or bruising.

5) Abscisic acid:-for dormancy period in perennial flowers and shrubs.

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