The effects of climate change are an emerging threat that is compromising the sustainability of grapevine growing worldwide. The Tempranillo variety is no stranger to this threat. In fact, in recent decades, significant losses have occurred in the yield and quality of Tempranillo grapes for winemaking. This problem is particularly serious in Spain, where Tempranillo is the red variety par excellence for the production of great wines. In this study, we assessed whether two genetically related varieties could exhibit a better drought response than Tempranillo itself. During two consecutive seasons, a study was conducted including the Tempranillo, Benedicto, and Moribel varieties, which were grown under two different water deficit regimes. The phenology of the varieties was followed, and components of yield, vigor, quality parameters, and δC were analyzed. The results revealed that Tempranillo was the variety most affected by water stress, exhibiting significantly higher δC than its relatives. Without compromising yield, Benedicto and Moribel responded better than Tempranillo to drought conditions, exhibiting better must quality even in the warmer season. The wines coming from Benedicto exhibited the highest quality because of their high total acidity, anthocyanin concentration, color intensity, and low pH. Although all three wines exhibited a similar profile, in the sensory analysis, tasters mostly preferred Benedicto and Moribel wines to Tempranillo ones.

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与丹魄基因相关的品种在干旱条件下的表现是否会比它更好？

气候变化的影响是一个新出现的威胁，正在损害全球葡萄种植的可持续性。丹魄品种对这种威胁并不陌生。事实上，近几十年来，用于酿酒的丹魄葡萄的产量和质量发生了重大损失。这个问题在西班牙尤为严重，因为丹魄是生产优质葡萄酒的最佳红葡萄品种。在这项研究中，我们评估了两个基因相关的品种是否能够比丹魄本身表现出更好的干旱反应。在连续两个季节中，对丹魄、贝内迪克托和莫里贝尔品种进行了一项研究，这些品种在两种不同的缺水条件下生长。跟踪品种的物候，分析产量、活力、品质参数和δ13C的组成。结果显示，丹魄是受水分胁迫影响最严重的品种，其 δ13C 值显着高于其近亲。在不影响产量的情况下，贝内迪克托和莫里贝尔比丹魄对干旱条件的反应更好，即使在温暖的季节也能表现出更好的葡萄品质。来自贝内迪克托的葡萄酒因其高总酸度、花青素浓度、颜色强度和低 pH 值而展现出最高的品质。尽管这三种葡萄酒都表现出相似的特征，但在感官分析中，品尝者大多更喜欢贝内迪克托和莫里贝尔葡萄酒，而不是丹魄葡萄酒。