Physiological and biochemical alteration in susceptible and resistant ridge gourd cultivars against induced population of root-knot nematode, Meloidogyne incognita

摘要

Biochemical changes in Ridge gourd varieties inoculated with root-knot nematode, Meloidogyne incognita were investigated. Observations were recorded on biochemical modifications relating to various parameters like chlorophyll ‘ a ’, chlorophyll ‘ b ’, total chlorophyll, total sugar and starch and total protein content during post infection periods. The variation in chlorophyll ‘ a ’, chlorophyll ‘ b ’, total chlorophyll, total protein, total sugar and starch content in five cultivars, i.e. Priya, BSS-1009, Aneeta, Aarti and Harsha were studied 30?days after inoculation. Reduced percentage of chlorophyll ‘ a ’, chlorophyll ‘ b ’, total chlorophyll contents were observed in inoculated samples than the healthy counterparts. However, an increase in amount of total sugar, starch and total protein contents was observed in the diseased tissues.