Question

Find the pair which incorrectly matched for the disease and its causal organism.

• A. Late blight of potato - Alternaria solani
• B. Black rust of wheat - Puccinia graminis
• C. Loose smut of wheat - Ustilago nuda
• D. Root-knot of vegetables - Meloidogyne sp.

Answer 1

The correct option is A Late blight of potato - Alternaria solani

Late blight of potato is caused by the fungus Phytophthora infestans. This disease results into crop failures in a short period if appropriate control measures are not adopted.

Alternaria solani is a plant pathogen or the causative agent of early blight in Solanum species. It produces a disease in tomato and potato plants called early blight. The pathogen produces distinctive "bullseye" patterned leaf spots and can also cause stem lesions and fruit rot on tomatoes and tuber blight on potatoes. Hence, option a is the incorrect pair.