Field Level Resistance of Mungbean Mini Core Collection to Dry Root Rot Caused by Macrophomina phaseolina
Bhargavi K *
Professor Jayashankar Telangana Agricultural University, Rajendranagar, Hyderabad, Telangana State-500 030, India.
Pushpavalli SNCVL
Professor Jayashankar Telangana Agricultural University, Rajendranagar, Hyderabad, Telangana State-500 030, India.
Nair RM
World Vegetable Center, South Central Asia, ICRISAT Campus, Patancheru, Hyderabad, Telangana State- 502 324, India.
Vanisri S
Professor Jayashankar Telangana Agricultural University, Rajendranagar, Hyderabad, Telangana State-500 030, India.
Padmaja G
Professor Jayashankar Telangana Agricultural University, Rajendranagar, Hyderabad, Telangana State-500 030, India.
Sandhyakishore N
Professor Jayashankar Telangana Agricultural University, Rajendranagar, Hyderabad, Telangana State-500 030, India.
*Author to whom correspondence should be addressed.
Abstract
Dry root rot caused by Macrophomina phaseolina (Tassi) Goid is one of the emerging diseases in mungbean, leading to substantial losses in yield, ranging from 25% to 48% depending on environmental conditions and crop management practices. It is a saprophytic fungus with survival of up to 15 years in the soil with the wide host range of more than 500 plant species. Evaluation of Dry root rot resistance in the mungbean mini core collection (MMC) consists of 293 accessions through field screening at Hyderabad, India revealed significant differences in disease incidence, with VI001509 AG, VI000203 B-BR, VI001400 AG, VI001490 AG, VI002529 B-BL and VI001244 AG exhibiting consistent resistance compared to previously done studies by paper towel method, sick pot method at Hyderabad and sick field method in Myanmar under natural inoculum pressure. Overall, the study provides valuable insights for selecting superior, stable genotypes and highlights specific accessions for mungbean improvement, particularly in developing dry root rot resistant varieties under climate change scenario.
Keywords: Dry root rot, field screening, mungbean, resistance