Evaluation of different Brassica genotypes under field conditions against white rust disease (Albugo candida) of rapeseed-mustard for resistant sources

White rust or white blister disease caused by oomycete fungi, Albugo candia is one of the major devastating rapeseed mustard. Continuous emergence new races pathogen responsible for breaking down resistance already existing resistant cultivars. So there need evaluation cultivars as well Brassica to find out stable sources against disease. In this context, 82 different genotypes, including 10 species were evaluated in field, under natural conditions confirmation candida two successive years 2017-18 and 2018-19. Observations percent severity phenotypic reaction taken at time intervals 70, 80 90 DAS. Infection rate area progress curve (AUDPC) calculated each genotype. Out genotypes evaluated, 26 found free from 28 showed moderately while rest susceptible 90DAS. Minimum infection (0.0949) AUDPC (69.44) was observed DRMRJ 127 SIVT-17-19 maximum (0.1008) (588.0) 71 J0002 RH 30, respectively