RESUMO A videira ‘Niagara Rosada’ é a principal cultivar de uva de mesa plantada no Sul do Brasil. Para avaliar a qualidade da uva produzida, foi conduzido um experimento com aNiagara Rosada nos seguintes porta-enxertos: ‘Jales’, ‘Tropical’, ‘Campinas’, ‘VR 043-43’, ‘R-99’, ‘Paulsen 1103’, ‘Schwarzmann’,‘Traviú’, ‘Golias’, ‘Gravesac’, ‘RR 101-14’, ‘Dog Ridge’, ‘VR 044-4’, ‘Kobber5BB’ e ‘SO4’, mais o pé-franco. Foram avaliados a fenologia, o vigor, a sobrevivência das plantas ea produção (produtividade, tamanho do cacho e número de cachos por planta). Os diferentes porta-enxertos não influenciam na fenologia da planta. O maior vigor foi observado para o ‘Dog Ridge’, seguido do‘Campinas’, ‘Paulsen 1103’ e ‘VR 043-43’. As maiores mortalidades de planta ocorreram para pé-franco (56%), ‘Traviú’ (50%) e ‘Schwarzmann’(41%). Os porta-enxertos ‘Paulsen 1103’, ‘Campinas’ e ‘Golias’, além de altaprodutividade, apresentam cachos maiores e mais compactos.
ABSTRACT The ‘Niagara Rosada’ vine is the main variety of table grape grown in southern Brazil. To improve the quality of grapes produced, an experiment was conducted with the following rootstocks: ‘Jales’, ‘Tropical’, ‘Campinas’, ‘VR 043-43’, ‘R-99’, ‘Paulsen 1103’, ‘Schwarzmann’, ‘Traviú’, ‘Golias’, ‘Gravesac’, ‘RR 101-14’, ‘Dog Ridge’, ‘VR 044-4’, ‘Kobber 5BB’ and ‘SO4’, and the ungrafted. The phenology, the vigour, the survival rate and the production of the plants (productivity, bunch size and number of bunches per plant) were evaluated. The different rootstocks do not influence the plantphenology. The greatest vigour was found in the ‘Dog Ridge’ rootstock, followed by the ‘Campinas’, the ‘Paulsen 1103’ and the ‘VR 043- 43’. The highest mortality rates of the plants, after 11 years of experiment happened to the ungrafted (56%), Traviu’ (50%) and ‘Schwarzmann’ (41%). The ‘Paulsen 1103’, ‘Campinas’ and ‘Golias’ rootstocks, besides a high productivity, presented the largest size and the best presentation of bunches.