Total Nonstructural Carbohydrate and Total Nitrogen Content in Leaves and Terminal Shoots of Mango (Mangifera indica L.) var. Nam Dok Mai throughout the Year

Abstract

Seasonal changes in total nonstructural carbohydrates and total nitrogen contents in leaves and terminal shoots of mango (Mangifera indica L.) var ‘Nam Dok Mai’ were studied at every 4 weeks interval during June 1978 to May 1979. Total nonstructural carbohydrates in leaves and terminal shoots were found increased at two peaks, first in June, before the flush of new shoots and second in January, before flowering. The nitrogen contents in leaves and terminal shoots were high during the period from June to December, then decreased rapidly. In early January, total nonstructural carbohydrates were increased with the decreased in total nitrogen this phenomena was at the same period of flower initiation.