Apparent hydraulic strategies of diverse winegrape cultivars depend on the choice of driving and response variables

Irrigation management: Irrigation scheduling may use shared physiological thresholds across cultivars but should consider differences in vigor and hence canopy size that affect water use. Modeling: Physiological models must account for differences in variable choice and measurement range to avoid misleading outcomes. Breeding and adaptation: Winegrape cultivars may lack diversity in hydraulic strategies, suggesting limited potential for genetic adaptation to intensifying drought stress.Breeding and adaptation: Winegrape cultivars may lack diversity in hydraulic strategies, suggesting limited potential for genetic adaptation to intensifying drought stress.