Figure 5.

(A) Daily measurements of whole-plant transpiration of the drought-stressed plants from the first to the last day on the Plantarray (39 days) with the 12-day drought period implemented through gradual deficit irrgation (80% of the plant’s own previous day transpiration) indicated as gray-shaded area. (B) Average daily transpiration during the 12-day drought phase of drought-stressed vs well-watered control plants. Letters indicate statistically significant differences between the groups (p < 0.05, pairwise comparisons Tukey’s HSD), and bars represent the standard error. The behavior under well-watered conditions as observed during the whole experimental phase (on the Plantarray) is shown in Figure 4 . The peaks in (A) are due to high PAR and VPD.