Biochemical changes in the leaf of bearing and nonbearing trees of some mango (Mangifera indica L.) varieties/hybrids.
Jyothi M. H., Ravindra Soppin, Suresh Ekbote
Author Affiliation: Department of Horticulture, University of Agricultural Sciences, Dharwad, India.
Advances in Agricultural Research in India 10 : 17-23
Abstract : Biochemical changes in the leaves of mango alternate-bearing (Alphanso, Dashehari and Baneshan) and regular-bearing (Neelum and Totapuri) cultivars, and in two hybrids (Mallika and Neeleshan), were studied in Karnataka, India during 1994. Changes in reducing, nonreducing and total sugars, as well as starch, were lower in regular-bearing than alternate-bearing cultivars. Hybrids registered lower sugar and starch contents than alternate bearers at all developmental stages. In regular-bearing trees, reducing sugars were highest at fruit bud differentiation (FBD), declined during fruit development and increased at maturity. Nonreducing and total sugars followed a rise-and-fall pattern from FBD to maturity. In alternate bearing trees, reducing, nonreducing and total sugars increased during FBD to flowering, then decreased from fruit development to maturity. The starch content declined from FBD to maturity.