Effect of plant bio-regulators on fruit quality and mineral composition of ripe mango cv. Himsagar.
Dutta P., Kundu S., Ahmed B.
Author Affiliation: Department of Fruits and Orchard Management, Faculty of Horticulture, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur - 741 252, West Bengal, India.
Indian Agriculturist 52 : 107-111
Abstract : The effect of plant bio-regulators (PBRs) on the yield, physico-chemical qualities and mineral composition of ripe mango cv. Himsagar was studied during 2002-05, in West Bengal, India. NAA, GA3 and cycocel [chlormequat] significantly increased the fruit yield, individual fruit weight and size of the fruit compared with the untreated control. Among the different PBRs, NAA at 200 ppm was found effective in increasing all the physical parameters, followed by GA3 and cycocel. Maximum total soluble solids (18°Brix), total sugar (14.76%) and ?-carotene (6976 µg/100 g pulp) were obtained from fruits treated with NAA at 200 ppm, followed by NAA at 100 ppm. GA3 at different concentrations was also beneficial in this respect. Different PGRs reduced the acid content of fruits. Minimum (0.12%) titratable acidity was recorded for NAA (200 ppm)-treated fruits while control fruits recorded maximum (0.19%) titratable acidity. Mineral composition of ripe fruits was also influenced by different PBRs. Fruits treated with NAA at 200 ppm showed maximum content of N, Zn, Fe and Mn, and GA3 (100 ppm) treated fruits contained maximum P, K, and Ca, while untreated fruits showed least amount of mineral elements.