EFFECT OF POLYAMINES ON FRUIT RETENTION AND YIELD OF MANGO (MANGIFERA INDICA L.) CV. KESAR

Abstract

Putresine, spermine and spermidine at three different concentrations (0.1, 0.01 and 0.05 mM) were applied as foliar spray on mango panicles cv. Kesar at pea stage and 20 days thereafter to study their effect on fruit retention and fruit yield at Navsari Agricultural University, Navsari during 2012-13. Exogenous application of polyamines had a positive and significant impact on all parameters included in the study except fruit breadth. Between the three polyamines, foliar application of spermine at 0.01mM resulted in the highest fruit retention (20.70%), number of fruits per panicle (1.37), number of fruits per tree (272.67) and fruit yield per tree (73.22 kg/tree). The maximum fruit weight (284.17 g), fruit length (12.15 cm), fruit volume (280.89 ml) and pulp weight (153.60 g) was recorded in spermine 0.1mM treatment. Foliar sprays of spermine at 0.01mM can thus be employed for improving fruit retention and increasing production in mango cv. Kesar