The term Hormone-Based Plant Growth Regulators (PGRs) refers to organic substances that naturally occur in plants (called phytohormones or plant hormones) or synthetic compounds designed to mimic their effects. They control various physiological functions, growth, and development at very low concentrations.
These regulators are broadly classified into two groups based on their primary effect on plant growth:
These hormones stimulate growth-promoting activities like cell division, cell enlargement, flowering, and fruit formation.
| Class | Key Functions | Natural/Synthetic Examples |
| Auxins | Cell elongation, apical dominance, root initiation (e.g., in stem cuttings), prevention of early fruit/leaf drop, parthenocarpy. |
Natural: Indole-3-acetic acid (IAA), Indole butyric acid (IBA) Synthetic: Naphthalene acetic acid (NAA), 2,4-Dichlorophenoxyacetic acid (2,4-D, used as a herbicide) |
| Gibberellins (GAs) | Stem elongation (bolting), breaking seed/bud dormancy, promoting seed germination, increasing fruit size (e.g., in grapes). | Natural: Gibberellic Acid ($GA_3$) |
| Cytokinins | Promote cell division (cytokinesis), growth of lateral buds (overcoming apical dominance), delay leaf senescence (aging). |
Natural: Zeatin Synthetic: Kinetin, Benzyladenine (BA) |



Price:
Price 840.0 INR / Strip
Minimum Order Quantity : 100 Liters
Target Crops : Vegetables
Application : Agriculture, Plant Growth
Formulations Type : Liquid
Release Type : Other
Price 320.0 INR / Liter
Minimum Order Quantity : 100 Liters
Target Crops : Fruits
Application : Agriculture, Plant Growth
Formulations Type : Liquid
Release Type : Other