Climate change scenarios are predicting an increase in temperature as well as more scarce and torrential rainfall episodes. Due to this, an imbalance between grape technological and phenolic maturity is being observed detrimentally affecting grapes composition. In semi-arid areas, irrigation management is a main field practice to influence grape ripening. The goal of the present study was to investigate in Vitis vinifera L. cv. Bobal grapevine responses to three watering regimes: (i) Rainfed, (ii) deficit irrigation (DI) replacing only 35% of the estimated crop evapotranspiration (ETc) and (iii) full irrigation (FI) replacing 100% ETc. In the mid-summer, rainfed grapevines showed different degrees of water stress determined by midday stem water potentials (Ψstem) ranging from −1.1 to −1.4 MPa depening on the season. Rainfed plants had in all seasons less vigor and production and, at harvest, higher concentrations of total soluble solids (TSS) and grape phenolics compounds, as well as lower pH, with respect to the other water regimes studied. DI grapevines, generally, had intermediate values between Rainfed and FI, which presented extreme values of the studied parameters respect to Rainfed. The effects observed on grape color parameters and phenolic compounds with the Rainfed regime were mainly due to a dehydration of the berry, which lowered the yield and the weight of the berry compared to the irrigated treatments. The lower TSS accumulation in the DI berries with respect to the Rainfed, will favor obtaining wines with lower alcohol content, currently more demanded by the consumers. Besides, despite the differences obtained between water regime treatments in the TSS accumulation, the extractability of the anthocyanins was similar, which is interesting since anthocyanin extraction from grapes is prerequisite to the formation of stable red wine pigments. Although the most convenient irrigation strategy might depend to the wine style to be obtained, DI is a strategy that can help to close the gap in the imbalance between the technological and phenolic maturity, positively affecting vine yield and performance with respect to the rainfed strategy.

气候变化情景预测温度会升高，降雨稀少和暴雨更多。因此，观察到葡萄工艺和酚类成熟度之间的不平衡，对葡萄的成分产生不利影响。在半干旱地区，灌溉管理是影响葡萄成熟的主要田间实践。本研究的目的是调查葡萄L.简历 葡萄对三种灌溉方式的响应：（i）雨养，（ii）亏缺灌溉（DI）仅代替估计的作物蒸散量（ETc）的35％，以及（iii）完全灌溉（FI）代替100％ETc。在仲夏，雨养的葡萄树表现出不同程度的水分胁迫，取决于季节中午间茎水势（-茎）的范围从-1.1到-1.4 MPa。与其他研究水相比，雨养植物在所有季节的活力和产量均较低，收获时的总可溶性固形物（TSS）和葡萄酚类化合物浓度较高，pH较低。通常，DI葡萄的中间值介于Rainfed和FI之间，这代表了与Rainfed有关的研究参数的极值。在Rainfed模式下，观察到的对葡萄颜色参数和酚类化合物的影响主要是由于浆果脱水所致，与灌溉处理相比，浆果的产量和重量降低了。相较于Rainfed，DI浆果中较低的TSS积累，将有利于获得酒精含量较低的葡萄酒，目前消费者需求量更大。此外，尽管水处理方法在TSS积累中存在差异，但花色苷的可提取性相似，这很有趣，因为从葡萄中提取花色苷是形成稳定的红酒色素的前提。尽管最方便的灌溉策略可能取决于要获得的葡萄酒风格，