A Root-knot nematodes, Meloidogyne spp., are economically important plant pathogens and distributed worldwide. Root-knot nematodes display marked sexual dimorphism, i.e., the females are pyriform or saccate, the males vermiform. The second-stage juvenile becomes sedentary and as it feeds on special nurse cells, it undergoes more morphological changes. The length of the life cycle of root-knot nematodes is greatly influenced by temperature. Root-knot nematodes usually cause the formation of knots or galls on roots of susceptible host plants. The vermiform males of root-knot nematode species A practical way to induce sex reversal and thus control root-knot nematode populations by changing them to populations of males with few or no females is still a far-reaching objective. The coffee root-knot nematode may also occur on the Indian subcontinent and in Thailand, Greece, Java, and Italy. Root-knot nematodes display marked sexual dimorphism, i.e., the females are pyriform or saccate, the males vermiform.