Control failures of Fusarium wilt on tomatoes and resistance of cultivars to the three races of the pathogen

The use of resistant cultivars is the main strategy to control Fusarium wilt on tomato, caused by oxysporum f. sp. lycopersici . This study aimed quantify incidence and distribution this disease in region Nova Friburgo, RJ, as well type resistance tomato three FOL races. Samples healthy wilted plants from 40 properties were evaluated for presence vascular discouloration. Seventeen races using a grading scale. Classification resistance/susceptibility, percentage infection system, fresh weight accumulation seedling length determined. All analysed behaved similar immune (SI) race 1 or partial 2. Only Aguamiel cultivar presented SI reaction 3. None It can be concluded that failures attributed majority with incomplete seed packages also contain information about resistance.