The following points highlight the top six types of plant growth regulator. The types are: 1. Auxins 2. Gibberellins 3. Cytokinins 4. Abscisic Acid (ABA) 5. Ethylene 6. Vitamins. Plant Growth Regulator: Type # 1. Auxins: Auxin is a group of hormone produced by the apical apices of stem and roots which migrate from the […]