RESUMOAs cultivares Cabernet Sauvignon e Syrah são destinadas à elaboração de vinhos tintos jovens ou de guarda bastante difundidas em diversas zonas vitivinícolas de todo o mundo. No Brasil, são utilizadas principalmente no Rio Grande do Sul e Vale do Rio São Francisco. Atualmente, produtores da região de Jundiaí, SP, têm demonstrado interesse na utilização de tais cultivares com intuito de obter vinhos de qualidade superior aos originários de cultivares americanas. Por isso, realizou-se o estudo do comportamento das cultivares Cabernet Sauvignon e Syrah em diferentes porta-enxertos, na região de Jundiaí, SP (23º06 S; 46º55 W, 715 m). Não houve influência dos diferentes porta-enxertos sobre o comportamento da cultivar Cabernet Sauvignon. O porta-enxerto IAC 571-6 Jundiaí tendeu a conferir colheita tardia na cultivar Syrah. Os porta-enxertos IAC 572 Jales e IAC 571-6 Jundiaí conferiram maior produção a cultivar Syrah. A cultivar Syrah apresentou-se como boa opção de plantio para obtenção de vinho de qualidade na região.Termos para indexação: Uva, vinho, qualidade. ABSTRACTGrapevines cv. Cabernet Sauvignon and Syrah are largely used for high quality vine making all around the world. In Brazil they are concentrated moreover, at the Rio Grande do Sul state and in the São Francisco Valley. Producers from Jundiaí region (São Paulo state) have been interested in such cultivars for improved quality vine making as they generally use american cultivars for that propose. Aiming study the performance of cv Cabernet Sauvingnon and Syrah, cultivated over different rootstocks an experiment was conducted in the region of Jundiaí (SP) (23º06 S; 46º55 W, 715 m). Results showed that there wasn t influence of different rootstocks on the performance of both analyzed cultivars. It was observed a trend of the rootstock IAC 571-6 Jundiaí to improve final yield of cv Syrah. The Rootstocks IAC 572 Jales and IAC 571-6 Jundiaí combined to Syrah resulted in the highest yield in the experiment. The Syrah shows itself to be a good alternative when planting for quality vine making in the region of the experiment.
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