Abhishek Gowda1, Mr Venkata Naresh Boddepalli1, Dr Sunil Chaudhari1, Dr Ramakrishnan M Nair1
1World Vegetable Center, Hyderabad, India
Mungbean (Vigna radiata [L.] R. Wilczek var. radiata), also known as green gram, is a grain legume crop grown in Asia, Australia, and Sub-Saharan Africa. The production is hampered by several biotic factors including, anthracnose (Colletotrichum truncatum), a common fungal disease. In India, anthracnose disease has been estimated to cause yield losses of up to 70%. The anthracnose pathogen is a seed and soil-borne disease, and its severity is determined by weather conditions. The disease can affect aerial part of the plant at any stage of growth. Spots first developed on the lower side of the leaf, then on the leaf petiole, stem, and pods. The infected tissues of the plants wither off in severe infections. To identify the source of resistance, 42 mungbean mini-core accessions were screened at WorldVeg South Asia, Hyderabad under a natural disease pressure from July to September (kharif season) in 2021. The scoring was done on a 1-9 visual rating scale (1= immune and 9 = highly susceptible). Accessions such as VI003534 BG, VI003720 BG, VI004743 AG, VI003493 BG, VI003235 AG, VI002529 B-BL, VI003699 B-BG, VI004045 A-DGM, VI001652 BG, VI003337 BR, VI001244 AG, VI003517 BG and VI003760 BG showed high resistance with a disease score of 2. These accessions with lower disease score and high resistant reaction could be used as potential sources of resistance to anthracnose in the breeding program.
Abhishek Gowda is working as Scientific Officer- Plant Pathology at the World Vegetable Center, South Asia/Central Asia team at ICRISAT Campus, Hyderabad and has joined the International Mungbean Improvement Network. His work involves Integrated Disease Management (IDM) in legumes, screening of disease-resistant lines, conducting research work in lab and field related to legume disease management, disease diagnosis and extension work for projects, and providing IDM training to farmers and technical staff. He has completed his master’s degree and PhD from University of Horticultural Sciences, Bagalkot, India. He previously worked on identifying host defense inducers and consortia of bio-agents against pomegranate bacterial blight diseases, screening of different genotypes for resistance, molecular-based detection of plant pathogens, and developing integrated disease management modules for management of Ceratocystis fimbriata.