Abscisic acid, a plant hormone, is central to growth inhibition. It regulates diverse plant development and stress responses, such as seed dormancy, stomatal closure, and bud growth suppression. While auxin and gibberellin promote growth, abscisic acid acts as a growth inhibitor, particularly during stresses like drought.
Functions of Abscisic Acid: Induces seed dormancy, preventing germination in adverse conditions. Promotes stomatal closure, minimizing water loss during drought. Inhibits shoot and root growth under stress.
Conclusion: Abscisic acid is a vital hormone for regulating plant growth and environmental stress responses due to its role as a growth inhibitor.