A review on performance of gibberellic acid on African marigold

Abstract

Among plant growth regulators, Gibberellins are the most widely used and proven growth substances in Horticultural crops. Generally GA3 influences a range of developmental process in plants life like stem elongation, germination, breaking dormancy, flowering, sex expression, enzyme induction and leaf and flower senescence. Looking to the mode of action of the application of GA3 in early stage enhances the growth of the plant. Thus, the GA3 allow obtaining the best ratio between the vegetative growth and flower production, thereby improving the market quality of flowers. It increases in carbohydrate production, number of branches, number of flowers, flower diameter, weight of flower, yield and quality of flower.