EFFECT OF WATER STRESS ON MANGO FLOWERING IN LOW LATITUDE TROPICS OF NORTHERN AUSTRALIA
In the sub-tropics, night temperatures of 15°C or lower induce mango floral morphogenesis whereas temperatures of about 20°C or higher promote vegetative growth. In the tropics where temperatures may remain too high for induction of flowering by cool nights, a dry period preceding flowering is generally believed to be necessary for reliable mango flowering. However, the effect of the soil water deficit on flowering response is still a matter of controversy. Our studies, for the first time, examined the effect of soil water stress on flowering in mango trees grown under quasi-natural conditions (in open-air and in 200-litre drums) in the low latitude tropics. Controlled soil water deficit lasting 5 weeks was demonstrated to promote earlier and more intense flowering in mango trees of both ‘Kensington’ and ‘Irwin’ cultivars. Final fruit yield was also higher in water- stressed trees. Environment genotype effects on mango flowering were also discussed.
Lu, P. and Chacko, E.K. (2000). EFFECT OF WATER STRESS ON MANGO FLOWERING IN LOW LATITUDE TROPICS OF NORTHERN AUSTRALIA. Acta Hortic. 509, 283-290
Mangifera indica L., soil water deficit, temperature