Fig. 1

Physiological measurements of one- to three-year-old vines of the four Vitis genotypes during recovery and WD experiments. a), e) Relative soil water content (Relative SWC), b), f) photosynthesis, c), g) stomatal conductance (G_s) and d), h) shoot elongation rate (SER), were measured every two days during both experiments. The first experiment consisted of a WD treatment during eight days followed by a recovery (a-d). The second experiment involved a WD treatment maintained at 50% RSWC for the stressed vines during 20 days (e-h). Red, green, blue and purple colors correspond to CS, RG, RM and SC, respectively. Data are means ± SE, n = four individual potted vines (except for RG in WD treatment with three individual potted vines for the long-term WD experiment)