12 10 8 6 4 2 0 Sugar Starch β-amylase Root Shoot Fig. 1: Histogram showing the sugar, starch and β-amylase activities in the host plant S.melongena infected by the root-knot nematode M.incognita 2 5 2 0 1 5 1 0 5 0 ADH GDH 380 Root Shoot