Autoria: LEAO, P. C. de S.; OLIVEIRA, C. R. S. de

Resumo: Producing grapes for juice has been gaining prominence in the Northeast region of Brazil with diversification of grape cultivars for juice production over the past decade. The aim of this study was to estimate the effect of different vine training systems and rootstocks on the vigor, yield, and morpho-agronomic traits of ‘BRS Cora’ grapes over six production cycles. The experiment was conducted in Petrolina, PE, Brazil, from 2017 to 2020. A randomized block experimental design was used with four replications in split-split plots in time, with evaluation of the espalier, pergola, and lyre training systems combined with the rootstocks IAC 572 and IAC 766. The variables studied were the following: bud fertility index; yield per plant; number of clusters per plant; weight, width and length of cluster and berry; soluble solids (SS); titratable acidity (TA); and ratio SS/TA. The response of the ‘BRS Cora’ vines were different depending on the training system, rootstock, production cycle, or interaction among them. The bud fertility index varied only as a result of the production cycle. The pergola training system increased yield in relation to espalier and lyre systems, also favoring a larger number and size of clusters. The IAC 766 rootstock increased berry size and TA, whereas IAC 572 favored higher sugar/SS content and SS/TA ratio. The fourth production cycle (harvest on 9 May 2019) led to the best agronomic performance of ‘BRS Cora’ grapevines under the conditions of the Submédio do Vale do São Francisco region.

Ano de publicação: 2025

Tipo de publicação: Artigo de periódico

Unidade: Embrapa Semiárido

Palavras-chave: Grape juice, Grapes, Porta Enxerto, Sistema de condução, Suco de uva, Uva, Uvas híbridas, Variedade BRS Cora, Videira, Viticultura, Vitivinicultura tropical