BIOCHEMICAL ALTERATION IN COUNTRY BEAN DUE TO YELLOW VEIN MOSAIC VIRUS

Abstract

An investigation was conducted to study the biochemical changes in healthy and yellow vein mosaic virus infected leaves of country bean (Dolichos lablab L.). Results showed decrease in chlorophyll a, chlorophyll b, chlorophyll a+b, 8-carotene and DNA, but increase in total nitrogen, protein, carbon and RNA contents in infected leaves as compared to healthy one. Malonic acid was identified as main acid followed by oxalic and tartaric acids in healthy leaves, whereas oxalic acid- as main acid followed by malonic and tartaric acids in infected leaves.