Name the plant growth regulator used commercially for berry development in grape. (MPSC Mains(optinal-2) 2011)

✅Explanation: Gibberellic acid (GA) is a plant growth regulator commonly used to promote berry development in grapes, resulting in larger and looser bunches.

📌 Other option explanations:
-Cycocel is a growth retardant.
-NAA (Naphthalene acetic acid) is an auxin used for various purposes.
-6-BA (6-Benzylaminopurine) is a cytokinin used for promoting shoot growth.