Meloidogyne incognita

Meloidogyne incognita is a species of plant-parasitic nematode that belongs to the genus Meloidogyne. It is commonly known as the Southern root-knot nematode or cotton root-knot nematode. This nematode is a major pest of a wide range of plants, causing significant economic losses worldwide.

Biology

The life cycle of Meloidogyne incognita includes the egg, four juvenile stages, and the adult stage. The second-stage juvenile is the infective stage, which invades the roots of host plants and establishes a feeding site. The nematode feeds and develops through the remaining juvenile stages to become a mature female, which lays eggs that are protected by a gelatinous matrix.

Host Range and Distribution

Meloidogyne incognita has a wide host range, infecting many species of plants including cotton, tomato, potato, pepper, and eggplant. It is distributed worldwide, particularly in regions with warm climates.

Damage and Control

Meloidogyne incognita causes root-knot disease, which is characterized by the formation of galls or knots on the roots of infected plants. This can lead to stunted growth, wilting, and yield loss. Control measures include the use of nematicides, crop rotation with non-host plants, and the use of resistant plant varieties.

Research

Research on Meloidogyne incognita includes studies on its biology, host range, distribution, damage, and control. This research is important for developing effective strategies for managing this nematode and reducing its impact on agriculture.

See Also

• Meloidogyne
• Plant-parasitic nematodes
• Root-knot disease

References

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