In Vitro studies on feeding of some plant parasitic nematodes

In vitro feeding of some plant parasitic nematodes has been studied on some vegetable crops. Tylenchus filiformis fed away from root tips with feeding mainly confined to epidermal cells of secondary roots and root hairs. Tylenchorhynchus swarupi fed all over the root surface but mostly in the meristematic zone. Hoplolaimus dubius preferred primary roots and root-lets and preferred feeding on Trigonella foenum-graecum, Brassica rapa and Spinacia oleracea. Rotylenchulus reniformis penetrated all along the roots except the root tips. Criconemoides brevistylus fed mostly on thick primary and secondary roots for 15–30 minutes at particular place. However, continuous feeding for 16 hours was recorded on T. foenumgraecum where it resulted in brown discolouration of the spots at the feeding site.