Documentation variation for Alternaria blight resistance in varieties of Rapeseed mustard

Abstract

The study was conducted with the objective to assess the resistance source against blight in rapeseed-mustard at Student's Instruction Farm, Acharya Narender Deva University of Agriculture and Technology Kumarganj Ayodhya (U.P.) during Rabi 2018-19. Screening of Indian mustard 47 genotypes, these screening was not found highly resistant, resistant and moderately resistance against Alternaria blight of rapeseed mustard six genotypes viz., Kiran, TMR-14-6, TMR-14-1, TMR-14-5, TMR-14-3, TMR-14-4 with disease severity of 5-10 per cent respectively were rated as moderately susceptible were found nine genotypes with disease severity 11-25 percent. 31genotypes were marked as susceptible in which disease severity was found to be 26 to 50%. The highly susceptible only one genotypes was found to be >50 present with disease severity respectively. It could be noticed that the vulnerability level was relatively quite high as compared to resistance status.