A hormone that helps in growing seedless grapes.
Correct answer: D. Gibberellins
- A. Auxins
- B. Cytokinins
- C. Ethylene
- D. Gibberellins
Explanation
Gibberellin is a plant hormone regulating key processes in plants; many of them are of significant agricultural importance, such as seed germination, root and shoot elongation, and flowering. Perhaps the most widespread use of gibberellin has been in grape production. The application of gibberellin is a regular practice for the culture of the 'Thompson Seedless' ('Sultanina') cultivar of grapes to increase fruit size and is also used to induce seedlessness in certain other grape varieties.
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About Plant Growth Regulators
Plant growth regulators are chemical messengers that control growth, development and responses to the environment. The topic covers auxins, gibberellins, cytokinins, abscisic acid and ethylene, including cell elongation, apical dominance, tropisms, seed germination, dormancy, fruit ripening and leaf fall, with growth promoters distinguished from inhibitors.
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