Reação de genótipos de bananeira a murcha de Fusarium

Abstract

Fusarium wilt caused by the fungus Fusarium oxysporum f. sp. cubense (Foc) is considered one of the main diseases of the banana crop, as it causes great damage due to its high destructive potential in most of the producing regions. In this context, the objective was to characterize seedlings of 'Prata Anã' banana cultivars and clones, as well as resistance to Fusarium oxysporum f.sp. cubense. The cultivars ('Prata Rio', 'Grande Naine', 'BRS Platina', 'Prata Catarina') were evaluated in a 9 x 3 x 5 factorial scheme. (1) control (no inoculation), (2) control, and (1) control (1) control (1) control (2) ) inoculation with the Foc (106) isolate, and (3) inoculation with the mixture of several Foc isolates (142, 124, 132, 106, 118 and 116) inoculations were performed one week after planting of the seedlings and at 90 days after inoculation. In order to evaluate the incidence and severity of the disease in the leaves and rhizome of each plant, the 'Gorutuba R1', 'Gorutuba R2' clones and the cultivar BRS Princesa were classified as tolerant to Fusarium wilt. , 'Silver Gorutuba' and 'Silver River' presents susceptibility to Fusarium wilt while Grande Naine and BRS Platina cultivars are resistant.