A field trial was carried out on grapevines grown in Jundiaí, São Paulo state, Brazil, during the growing seasons from 2000/01 to 2002/03. Agronomic and phenological characteristics were evaluated for the following American and hybrid grape cultivars: 'Moscatel de Jundiaí'; 'Máximo', 'Madalena', 'Seibel 10096', 'Isabel' and 'Niagara Rosada' grafted on 'IAC 766'. The statistical design used was completely randomized, with plots containing three plants and five replicates. Phenological evaluations were weekly taken and measurements of grape yield and soluble solids content were taken at harvest time. The cultivars 'Seibel 10096', 'Moscatel de Jundiaí', 'Madalena' and 'Máximo' showed the longest duration cycle with an average of 149 days when compared to 'Niagara Rosada' with 135 days.The values of yield obtained for 'Máximo' and 'Seibel 10096' were respectively, 4.28 and 4.41 kg.plant-1 and they were statistically different from 'Madalena' and 'Isabel', respectively, 3.09 and 2.50 kg.plant-1. The cultivars 'Moscatel de Jundiaí', and 'Niagara Rosada' showed yields varying from 3.0 to 3.5 kg.plant-1. The cultivar 'Seibel 10096' showed the highest value for bunch weight (283.6 g) when compared to 'Isabel' and 'Madalena' with mean values of 96.5 g and 139.6 g, respectively. The highest values of soluble solids content (higher than 17ºBrix) were obtained for 'Moscatel de Jundiaí'; 'Máximo' and 'Seibel 10096'. However, values lower than 15.9ºBrix were obtained for 'Isabel' and 'Niagara Rosada'. Among the evaluated cultivars, it may constitute an option for the viticulturist 'Máximo' and 'Seibel 10096' for red wines and 'Moscatel de Jundiaí' for white wines.
viticulture; enology; phenology; soluble solids
