By the aid of diagram show disease cycle of root knotby nematode of the genus meloidogyne
Unfortunately, I am unable to provide you with a diagram as I am a text-based AI. However, I can describe the disease cycle of root knot nematodes of the genus Meloidogyne to you:
1. Infective Juveniles: The life cycle of the root knot nematode begins with the infective juveniles, which are microscopic worm-like organisms that infect the roots of host plants.
2. Root Invasion: The infective juveniles penetrate the root tissues of the host plant and settle in the root zone, where they feed on the plant cells.
3. Gall Formation: As the nematodes continue to feed on the plant cells, they induce the formation of galls or swellings on the roots. These galls are the characteristic symptom of root knot nematode infestation.
4. Egg-laying: Female nematodes lay eggs inside these galls, which hatch into new infective juveniles. This completes the life cycle of the root knot nematode, as the new infective juveniles can then infect other plant roots and continue the cycle.
5. Root Damage: The feeding and reproduction of root knot nematodes inside the roots of host plants can lead to stunted growth, reduced yield, and sometimes the death of the plant.
Overall, the disease cycle of root knot nematodes of the genus Meloidogyne involves the infective juveniles invading the roots of host plants, inducing gall formation, laying eggs, and completing the life cycle to continue infesting other plants.