Author(s): Dr. Samir Cherif

Abstract: Urdbean (Vigna mungo L.), commonly known as black gram, is an important pulse crop grown extensively in South and Southeast Asia for its high nutritional value and nitrogen-fixing abilities. However, its productivity is severely hampered by multiple biotic stresses, including pod borer (Helicoverpa armigera) infestation and susceptibility to fungal, bacterial, and viral diseases. Pod borer infestation not only causes direct yield losses but also predisposes the plants to secondary infections by creating physical wounds and physiological stress. This review explores the intricate relationship between pod borer infestation and increased disease susceptibility in urdbean germplasm. It discusses the mechanisms through which insect herbivory compromises plant immunity, leading to heightened vulnerability to diseases such as Cercospora leaf spot, powdery mildew, and root rot. Additionally, the review evaluates resistant and tolerant germplasm lines, integrated pest management (IPM) strategies, and the role of molecular breeding in developing resistant cultivars. Future research directions are proposed, emphasizing the need for advanced phenotyping tools, molecular markers for resistance genes, and sustainable pest-disease management practices.

Pages: 123-126 | Views: 22 | Downloads: 13

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