Vol. 12, Issue 11 (2023)

Author(s):
Ayyappa, G Girish, Imtiaz Ahmed K, Ashok Badigannavar, Suvarna, Ravi Kumar A, Khaja Mohinuddin D, Ragavendra VC and Divya MH

Abstract:
Total 100 mutants and 7 checks were used to study the charcoal rot resistance in the present experiment. This study was carried out in augmented design during Rabi 2022 at Agriculture research station, Hagari. Charcoal rot disease is caused by Macrophomina phaseolinana (Tassi) Goid. It appears in severe form on the improved varieties in hot dry weather with soil moisture stress. The screening results revealed that 28 mutant lines shown moderate resistant reaction compared to the resistant check DSV-4 (0.72) and E-36-1 (0.37), among them six mutants had exact only one node crossed by the pathogen. These mutants’ lines exhibited comparatively lowest number of mean nodes crossed. 40 mutant lines shown moderate resistant response to charcoal rot index trait. These resistant lines can be used for further confirmation and also for future resistant breeding programmes.