Abstract
Abstract The objective of this study was to evaluate the effect of cytokinin (BAP) and gibberellin (GA3) applications on the growth, physicochemical characteristics and production of ‘Tommy Atkins’ mango fruits. Mango plants were sprayed with five concentrations (0, 75, 150, 225 and 300 mg.L-1) of BAP and GA3 and BAP + GA3 (0, 75 + 75, 150 + 150, 225 + 225 and 300 + 300 mg.L-1) at 15, 30 and 45 days after anthesis (DAA), single applications of GA3 occurred at 60, 70 and 80 DAA. Fruits were evaluated weekly from 52 DAA for weight, diameter and length until harvest and characterized for soluble solids content and acidity. A higher peak of fruit growth occurred between 66 and 73 DAA. Application of 150 + 150 mg.L-1 (BAP + GA3) promoted at the end of the evaluation period higher fruit weight compared to the other treatments and the control. No significant differences were observed in fruit production, but also concentrations of 150 + 150 mg.L-1 BAP + GA3 led to more than 50% of fruits in the marketing standard type 8. Exogenous application of 150 + 150 mg.L-1 (BAP + GA3) at 15, 30 and 45 DAA increased the weight, diameter, length, acidity and the percentage of fruits type 8 of ‘Tommy Atkins’ mango, but it did not increase yield.
Highlights
Mango (Mangifera indica L.) has the third largest production among tropical fruits in the world, only behind banana and pineapple, being produced in more than 100 countries in tropical and subtropical regions (BALLY and DILLON, 2018)
Plants were selected according to size and level of flowering, and phytosanitary management, nutrition and weed control followed the usual practices of the farm
The substances were weighed on a precision scale and diluted; BAP [6-benzylaminopurine] was diluted in hydrochloric acid (0.1 N HCl) with a magnetic stirrer and gibberellin was diluted in water
Summary
Mango (Mangifera indica L.) has the third largest production among tropical fruits in the world, only behind banana and pineapple, being produced in more than 100 countries in tropical and subtropical regions (BALLY and DILLON, 2018) It stands out among the main fruit crops cultivated in Brazil, which is the seventh largest mango producer in the world, after India, China, Thailand, Indonesia, Pakistan and Mexico (FAOSTAT - FAO, 2020). It is one of the most exported fruits in Brazil. In the São Francisco Valley, in 2019 alone, there was a 25% growth in the cultivated area, according to a survey performed by the Center for Advanced Studies in Applied Economics (ANUÁRIO, 2020)
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