J. .. Mirás-Avalos, I. Buesa, A. Yeves, D. Pérez, D. Risco, J. Castel, D. Intrigliolo
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Unravelling the effects of berry size on ‘Tempranillo’ grapes under different field practices
Small berries are considered to produce the best red wines as berry size determines the skin to pulp ratio and may affect wine composition. However, contrasting results have been reported about this postulate. In this context, the aim of this work was to assess the influence of berry size on grape compositional attributes in ‘Tempranillo’ grapevines under different irrigation, crop load and defoliation regimes. Grapes were collected from different experiments performed during three years in a ‘Tempranillo’ vineyard (Valencia, Spain). Grape size distribution was assessed and several traits were measured for each size category: number of seeds, seed and skin weight, total soluble solids, titratable acidity, pH, total phenolic index and anthocyanin concentration. Berry size exerted a significant effect on grape composition; smaller berries having higher sugars and anthocyanins concentrations. However, irrigation, crop load and defoliation also affected these compositional traits, producing greater berries with similar traits than those smaller, but coming from rain-fed and not defoliated treatments. Depending on the field practices applied, grape compositional attributes can be modulated for a given berry size. Therefore, wineries can use berry size classification for selecting those from a given size for making different wine styles.
期刊介绍:
Ciência e Técnica Vitivinícola (Journal of Viticulture and Enology) is an international journal that publishes original articles, research notes and review articles, written in Portuguese or in English, on the various fields of the science and technology of vine and wine: Viticulture, Enology and Vitivinicultural economy.