Effects of root-knot nematode Meloidogyne incognita infection on the peroxidase and polyphenoloxidase activities in the roots of selected vegetable crops

Abstract

Four week old seedlings of brinjal (Solanum melongena L.) cv. Punjab Bahar, tomato (Lycopersicon esculentum Mill.) cv. S-12, and seeds of okra (Abelmoschus esculentus L.) cv. Pusa Sawani, and bottle-gourd [Lagenaria siceraria (Mohxa) StandI.] cv. Punjab Round, were either transplanted or sown singly in pots containing steam sterilized soil. Fifteen days later 1000 second stage larvae of M. incognita, obtained from tomato roots, were inoculated into each pot around the root zone of the plants.