Effect of growth regulators on development and quality of fruits in mango (Mangifera indica L.).
Veera S., Das R. C.
Author Affiliation: Horticultural Research Station, Bhubaneswar, Orissa.
South Indian Horticulture 19 : 29-35
Abstract : Mangoes (cv. Banganapalli) were sprayed 4 times with 2,4-D, NAA, GA or 2,4,5-T, each at 10, 20 or 40 p.p.m., from the bud differentiation stage until the fruits were 2-3 cm in diameter. All treatments increased fruit size and weight, especially NAA at 40 p.p.m. Ascorbic acid content was increased by all treatments except GA, and reached a maximum of 40 mg/100 g with the highest rate of 2,4-D. The TSS content was increased by all treatments except GA and was greatest with 40 p.p.m. NAA. There were variable effects on the titratable acidity which was highest with 40 p.p.m. 2,4-D and lowest with 10 p.p.m. GA. The TSS/acid ratio was markedly reduced only by 40 p.p.m. GA; the highest value was in response to NAA at 40 p.p.m.