MANAGEMENT OF ROOT KNOT NEMATODE MELIODGYNE INCOGNITA ON HIBUSCUS ESCULENTUS (L.) BY LEAF EXTRACT OF LEUCAENA LEUCOCEPHALA (LAM.)
D. SAMSON EDWARD *
P.G. AND RESEARCH DEPARTMENT OF ZOOLOGY V.0. CHIDAMBARAM COLLEGE, TUTICORIN - 628 008, INDIA.
M. VAITHEESWARAN *
P.G. AND RESEARCH DEPARTMENT OF ZOOLOGY V.0. CHIDAMBARAM COLLEGE, TUTICORIN - 628 008, INDIA.
G. JEYASELVAM *
P.G. AND RESEARCH DEPARTMENT OF ZOOLOGY V.0. CHIDAMBARAM COLLEGE, TUTICORIN - 628 008, INDIA.
*Author to whom correspondence should be addressed.
Abstract
The impact of nematode pathogensis is reflected at tissue level with low sugar, starch and increased proteins, phenols and lipids. The redox enzyme activities showed a specific increase of dehydrogenase activities in the infected host plant. Varied concentrations of leaf extract treatment improved the bio-chemical profiles of nematode infected plants. The treatment of the infected plant with leaf extracts also improved environmental resistance and lowered the nematode population build up.
Keywords: Meloidogyne incognita, Leucaena leucocephala (Lam.), Hibiscus esculentus (L.), total dehydrogenases, total endogenous reductases