Effect of Vitex negundo on some physiological aspects in root-knot nematode Meloidogyne incognita infected Hibiscus cannabinus

The different dosages of chopped leaf of Vitex negundo on some aspects of pathogenesis of Hibiscus cannabinus infected with Meloidogyne incognita were carried out. The impact of pathogenesis was reflected at tissue level with low sugar level, elevated protein and lipid levels and reduced total energy content. The activities of redox enzyme showed a specific increase of dehydrogenases activities in the infected host under chopped leaf treatments. This indicates greater energy yield catalysis, due to expected tissue damage by the nematode. The resultant of these two enzyme activities ie, total dehydrogenases and endogenous reductases, is quite evidenced in the increments of sugar, protein, lipid and total energy in leaf of Vitex negundo was introduced as nematicide to the infected host plant.