Common name: GibberellicAcid
Chemical name:
(3S,3aR,4S,4aS,7S,9aR,9bR,12S)-7,12-dihydroxy-3-methyl-6-methylene-2-oxoperhydro-4a,7-methano-9b,3-propenol1,2-bifuran-4-carboxylic acid
Chemical class: Plant Growth Regulator
Molecular formula: C16H22O6
CAS NO.: 77-06-5
Properties:
Crystalline solid. M.p. 223-225°C (decomp.). In water 5 g/L (room temperature). Soluble in methanol, ethanol, acetone, and aqueous alkalis; slightly soluble in diethyl ether and ethyl acetate. Insoluble in chloroform. Potassium, sodium, and ammonium salts: Readily soluble in water (potassium salt 50 g/L).
Mode of action:
Acts as a plant growth regulator on account of its physiological and morphological effects in extremely low concentrations. Translocated. Generally affects only the plant parts above the soil surface.
Usage:
Has a variety of applications, e.g.to improve fruit setting of clémentines and pears (especially William pears);to loosen and elongate clusters and increase berry size in grapes; to control fruit maturity by delaying development of the yellow colour in lemons;to reduce rind stain and retard rind ageing in navel oranges;to counteract the effects of cherry yellows virus diseases in sour cherries;to produce uniform seedling growth in rice;to promote elongation of winter celery crop;to induce uniform bolting and increase seed production in lettuce for seed;to break dormancy and stimulate sprouting in seed potatoes;to extend the picking
season by hastening maturity in artichokes;to increase the yield in forced rhubarb; to increase the malting quality of to produce brighter-coloured,firmer fruit,and to increase the size of sweet cherries;to increase yields and increase yields of Italian prunes.
Normal Formulations:
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