Abstract
In the present study, eighteen genotypes of cauliflower were used to identify their resistance and susceptibility against
cabbage butterfly. All genotypes were sown following RCBD with three replicates and plant-to-plant as well as row-to-row
distance was maintained as 0.46m and 0.61m, respectively. Data regarding larval population were recorded by selecting 10
plants randomly from each plot at 4+1 day intervals throughout the crop season and analyzed following DMR test at p=0.05.
Genotypes viz. Cool Sun-70, Cauliflower Desi, Cash Mare, White Island were susceptible; whereas Shumila F1 H was
recorded as intermediate; however, Pari F1 H showed resistant responses during 2008-09. They were again sown during
2009-10 to confirm the findings of the previous year. The population of Pieris brassicae differed significantly among
genotypes, dates of observation and among their interactions. The genotype Cool Sun-70 was recorded susceptible; whereas
Pari F1 H was recorded as resistant with 30.02 and 3.44 per plant population of P. brassicae, respectively. Based on the
preliminary screening trials data, selected genotypes viz. Cool Sun-70, Cauliflower Desi, Cashmere, White Island, shumila
F1H and Pari F1 H differed significantly regarding per plant population of P. brassicae. The highest population (28.71 per
plant) was observed on Cool Sun-70, whereas minimum population (15.45 per plant)was recorded on Pari F1 H, and these
two cultivars were proved to be susceptible and resistant cultivars, respectively against P. brassicae.
