CREA, Council for Agricultural Research and Economics, Research Center for Viticulture and Enology, Bari, Italy.
Department of Soil, Plant and Food Science, University of Bari Aldo Moro, Bari, Italy.
J Sci Food Agric. 2022 Dec;102(15):7155-7163. doi: 10.1002/jsfa.12081. Epub 2022 Jul 24.
'Sangiovese' (Vitis vinifera L.) is a well-known Italian wine grape utilized for producing the prestigious Chianti Classico brand. Here, 'Sangiovese' is generally trained to a vertical training system, with an imposed crop level of around 3-5 kg per vine to preserve grape quality. Tendone comprises a horizontal trellis system, largely diffused in Mediterranean Countries for table grape production, and is adopted to achieve a high yield and to preserve grapes, by means of its canopy architecture, from excessive solar radiation, which in turn affects the organoleptic aspects of grapes and wines. The present study aimed to evaluate, in terms of phenolic and volatile compounds of grape and wines, 'Sangiovese' trained to Tendone, as affected by two crop levels, namely very high and reduced yields.
Reduced yield (18.39 kg per vine) by cluster thinning still appeared to provide a considerable yield and quality of grapes and wines. Thinning increased pH, tartaric acid content, flavonoids, anthocyanins, total polyphenols and proanthocyanins, and total free and bound aroma compounds, without affecting soluble solids and titratable acidity of grapes. As regards wines, reduced yield increased pH, tartaric and malic acids and dry reduced extract, flavonoids, anthocyanins, total polyphenols and proanthocyanins, and, finally, the color intensity of wines.
The present study highlights that Tendone training systems, combined with 40% of cluster thinning, allows a high yield to be reached, allowing, at the same time, a very interesting quality of grapes, making it possible to produce qualitative wines. © 2022 Society of Chemical Industry.
桑娇维塞（Vitis vinifera L.）是一种著名的意大利酿酒葡萄，用于生产著名的基安蒂经典（Chianti Classico）品牌葡萄酒。在这里，桑娇维塞通常采用垂直栽培系统，每株葡萄的强制产量约为 3-5 公斤，以保持葡萄的质量。坦东（Tendone）是一种水平棚架系统，在很大程度上在地中海国家用于生产鲜食葡萄，并采用这种系统来实现高产和通过冠层结构保护葡萄免受过量太阳辐射的影响，这反过来又会影响葡萄和葡萄酒的感官特性。本研究旨在评估在葡萄和葡萄酒的酚类和挥发性化合物方面，采用坦东系统栽培的桑娇维塞，在两种产量水平（即超高和减产）下的表现。
通过葡萄串疏除实现的减产（每株葡萄 18.39 公斤）似乎仍然提供了相当数量的葡萄和葡萄酒的产量和质量。疏除增加了 pH 值、酒石酸含量、类黄酮、花青素、总多酚和原花青素以及总游离和结合香气化合物，而不影响葡萄的可溶固形物和滴定酸度。就葡萄酒而言，减产增加了 pH 值、酒石酸和苹果酸以及干物质减少的浸出物、类黄酮、花青素、总多酚和原花青素，最后还增加了葡萄酒的颜色强度。
本研究表明，坦东栽培系统与 40%的葡萄串疏除相结合，可以实现高产，同时还能获得非常有趣的葡萄质量，从而生产出高质量的葡萄酒。© 2022 英国化学学会。
