Vol. 11, Issue 12 (2022)

Author(s):
JV Patel and NM Gohel

Abstract:
Potato (Solanum tuberosum Linn.) is an important vegetable crop cultivated throughout the world. It is a perennial herb belonging to the family Solanaceae, a native of the Andean Plateau of South America. However, the early blight of potatoes caused by Alternaria solani is a prominently observed disease in most potato-growing areas. Early blight disease is one of the most common and widespread diseases of potatoes. Early blight disease appeared as brown, round to oval necrotic spots with concentric rings on infected leaves. The isolation from diseased plant leaves revealed the association of Alternaria sp., which further satisfied Koch’s postulates. Based on cultural and morphological characters of pathogen and confirmation by sequencing of ITS rDNA region of a pathogen (NCBI accession number: MZ557830), proved that early blight of potato caused by Alternaria solani (Ellis and Martin) Jones and Grout in Gujarat conditions.