The objective of this study was to evaluate the reaction of 60 passionfruit (Passiflora edulis Sims f. flavicarpa Degener) genotypes to septoriosis. The experimental design was randomized blocks with four replications and six plants by plot. The inoculation was made by spraying a pathogen suspension (10(5)conidia/ml) on the plants. Six evaluations were made weekly, 18 days after inoculation. The disease severity was evaluated following the disease index (1, no symptoms; 2, leaves showing until 10% of lesion area; 3, leaves showing 10 to 33% of lesion area; leaves showing over 35% of lesion area; 5, leaf fall) and the percentage of leaf fall. The genotypes which showed less susceptibility were MAR.20.27, Joseph and MAR.20.36, whereas the genotypes MAR.20.59 and MAR.20.48 presented the higher index of susceptibility. Between the score obtained by the less susceptible genotype (3.4) and the score obtained by the most susceptible genotype (4.5) in the lesion scale, there was a difference of 31.8%, indicating that there is variability among the genotypes for resistance to septoriosis. The difference between the highest (81.6%) and the lowest (49.9%) percentage of leaf fall was of 31.7%.
Yellow passionfruit; Passiflora edulis f. flavicarpa; septoriosis; resistance
