References on Mango

Singh Z.

Author Affiliation: Horticulture, Division of Resources and Environment, Curtin University of Technology, GPO Box U 1987, Perth, Western Australia 6845, Australia.
  : 407-412

Abstract : The mango industry in a mediterranean climate of Western Australia is being developed to extend the period of fruit production through April. Low night temperature (10°C) during flowering in these areas reduces fruit set. To improve mango fruit set, the effects of exogenous application of various types of gibberellins and different times of their application were investigated. In the first experiment, GA3 (0, 10, 25, 50 and 75 ppm) was sprayed onto mango cv. Kensington Pride trees at flower bud differentiation (FBD) stage to investigate its effect on delaying flowering and fruit set. GA3 (75 ppm) at FBD resulted in significantly higher fruit set (84 fruit/panicle) compared to all other treatments. In the second experiment, GA3 (0, 1, 10, 25, 50 and 100 ppm) was sprayed on the panicles at full bloom (FB) stage to investigate its effects on fruit set. A spray application of GA3 (10 ppm) at FB resulted in higher fruit set (43 fruit/panicle) compared to all other treatments. To examine the effects of spray application different types of gibberellins on fruit set and retention, aqueous solutions of GA3, GA7, GA13, or GA4/A7 at different concentrations (0, 1, 5, 10 and 25 ppm) were sprayed onto panicles exhibiting fully swollen buds prior to flowering. Spray application of GA13 or GA4/A7 resulted in higher mean fruit set compared to GA3 or GA7. GA13 (10 ppm) was most effective in increasing fruit set compared to all other treatments of different gibberellins. Exogenous application of GA4 (10 ppm) onto panicles at fully swollen buds was the most effective in increasing the final fruit retention compared to all other treatments. Gibberellins seemed to play an important role in improving mango fruit set particularly where fruit set was retarded by the prevalence of low temperatures during flowering.