BIOCHEMICAL CHANGES DURING OFF-SEASON FLOWERING IN CUSTARD APPLE (Annona squamosa L.) Cv. ARKASAHAN INDUCED BY PRUNING AND DEFOLIATION
Journal Title: International Journal of Agriculture Sciences - Year 2016, Vol 8, Issue 59
Abstract
A field experiment was conducted during 2013-2014 to study the biochemical changes in the leaf of custard apple cv. ArkaSahan under different pruning with defoliation treatments during off-season flowering. Total phenols, reducing sugars, non-reducing sugars, total sugars, proline, chlorophyll-a, chlorophyll-b and total chlorophyll concentrations were monitored before and after treatment application. Total phenols, non-reducing sugars and total sugars decreased in treated trees vs. before application of treatments and control, but reducing sugar were lower before treatment application than the control and treated trees, and proline, chlorophyll-a, chlorophyll-b and total chlorophyll levels in leaves increased in the treated trees and control vs. before treatment application. Such biochemical changes within the custard apple leaves may have resulted in greater flowering and fruiting, giving rise to off-season flowering with yield of 19.6 kg per plant in the treatment of 25 per cent pruning + 1% orthophosphoric acid than the other treatments.
Authors and Affiliations
G. M. VINAY
Keywords
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