How Rootstocks Impact the Scion Vigour and Vine Performance of Vitis vinifera L. cv. Tempranillo

Background and Aim. The genetically determined characteristics of grapevine rootstocks are important factors that affect scion performance. This 3 years’ field study aimed to characterize the influence four well-established 30-year-old (110 Richter, 1103 Paulsen, 41B, 161-49Couderc) on Tempranillo cultivar in semiarid wine growing region D.O.Ca. Rioja, North-Eastern Spain. Methods Results. Nutrient concentrations mineral elements at flowering veraison were vines, jointly with grapevine-water status, gas exchange, vine vigour, chlorophyll content. Moreover, yield grape quality harvest. least vigorous (41B, 161-49C) conferred drought adaptability traits by increasing water use efficiency (WUE) decreasing whole-plant conductance per unit leaf area (Kplant) compared more (1103-P, 110-R). In contrast, increased transport capacity, which led higher plant performance nutrient uptake efficiency. At flowering, 1103-P a lesser extent, 110-R most efficient taking up nutrients, while 161-49C had lowest for nutrients. veraison, 41B exhibited closer behaviour than 161-49C, remained differentiated rootstocks, lower uptake, respectively. addition, was 1.6 kg less but composition improved. Notably, total soluble solids, acidity, polyphenol Conclusions. Overall, grafting onto specific represents strategy confer differential regulation water-saving strategies, yield, berry quality, potential. Significance Study. information may be useful growers seeking develop site-specific selection grafted cv.