The root-knot nematodes, Meloidogyne spp. infect a wide
range of agricultural products including vegetables, horti-
cultural and field crops and weeds as well (Jepson 1987).
Due to the world distribution, host range and the interac-
tion with other plant disease causing agents in the disease
complexes, they are considered as one of the most
important plant pathogens which threat world food
resources.