Plant growth regulators or phytohormones are organic substances produced naturally in higher plants, controlling growth or other physiological functions at a site remote from its place of production and active in minute amounts. The discovery of plant hormones and their ability to regulate all aspects of plant growth and development were defining moments in horticulture. Plant Growth Regulators (PGRs) were soon identified that could improve yield, quality and postharvest life. Nowhere has their impact been more vividly chronicled than in tree fruit production. | A recent advances in use of plant growth regulators PGRs in fruit crops - A review
