Plant growth regulators (PGRs) are chemicals used to modify plant growth such as increasing branching, suppressing shoot growth, increasing return bloom, removing excess fruit, or altering fruit maturity. Numerous factors affect PGR performance including how well the chemical is absorbed by the plant, tree vigour and age, dose, timing, cultivar, and weather conditions before, during, and after application.
Plant growth regulators can be grouped into five classes: compounds related to auxins, gibberellins and inhibitors of gibberellin biosynthesis, cytokinins, abscisic acid and compounds affecting the ethylene status. Products that block the biosynthesis of plant hormones are also available (Apogee, Retain)
Tricontanol in physiological terms is a plant growth regulator that shows its effects by influencing mineral uptake, increased permeability of water, enhances the activity of naturally available enzymes and plant hormones, increasing the rate of photosynthesis and enhancing the synthesis of proteins
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