Role of plant growth regulators in ornamental plants

Ornamental plants play a vital role in the global horticultural industry. Plant growth regulators are a wide group of naturally occurring or synthetically generated organic chemicals that are used as a commodity in the industrial ornamental production system. Plant growth regulators have a faster effect on flowering crop yields, both vegetative and flowering. The use of growth regulators in ornamental crops must be selective, non-toxic, and environmentally friendly. Their exogenous application contributes to the enhancement of various economically significant and market attractive characteristics of ornamental plants. As a cultural practice, commercial ornamental plant producers use plant growth regulators. The physiological processes of flowering crops are affected by plant growth regulators, followed by the development and flower formation of flowering crops affected by plant growth regulators. The types of plant growth regulators and their effects on ornamental plants are discussed in this review.