Water Use Efficiency and Nutritional Status of a New Grapevine Rootstock Selection

The production and quality of grapes are determined by the hydric nutritional status vine. In modern viticulture, interface between grapevine soil is represented rootstock, which modulates uptake water nutrients. Thus, selection new rootstocks for abiotic stress tolerance represents an adaptation strategy viticulture to environmental conditions imposed climate change. aim this work evaluate water-use efficiency (WUE) a 30 rootstock genotypes, originating from several breeding programs. WUE gas exchange were measured each genotype in two environments characterized different availability, levels N, P, K, Mg, Ca, Na, Fe, Mn, Zn leaf blades during phenological stages flowering ripening. Water availability was environments, affecting exchange, with mean values carbon assimilation 10.43 ± 0.32 3.84 0.34 µmol CO2 m−2 s−1, respectively. Genotypes classified according their tolerance, vigor, affinity macronutrients micronutrients. A total 14 genotypes showed stress, 10 them reported high vigor assimilation. Furthermore, majority water-stress-tolerant had greater Mg than K. further studies, most promising will be evaluated grafting combination Vitis vinifera.