Physiological Analyses of Coconut Palms (Cocos nucifera L.) Affected with Foliar Yellowing

By : Deepa Sinha, R. V. Manju, C, Roy Stephen, Viji M. M

Page No: 13-19

Abstract
Kerala the ‘Land of coconut’ occupies first position in area and production of coconut in India, but the productivity is below the national average. This is because of unproductive and senile palms, lack of adaptation of recommended cultivation practices and serious incidence of pests and diseases. Mid whorl yellowing a type of yellowing in coconut characterised by shedding of immature nuts, drying of inflorescence and serious reduction in nut yield, is rapidly spreading throughout Kerala. Physiological and biochemical analyses were carried out in palms affected with foliar yellowing. The results of biochemical and physiological analyses of the selected palms clearly indicated an altered primary metabolism, source-sink relation and a complexity in the nutriophysiology.

Authors :
Deepa S, Manju R. V., Roy Stephen and Viji M. M. : Department of Plant Physiology, College of Agriculture, Vellayani, Thiruvananthapuram, Kerala, India.