Fig. 3. Effect of water stress on leaf area, and leaf N and chlorophyll levels during seed filling, Exp. 2. Stress was applied early in seed filling at the beginning of growth stage R6. The time of application of the stress-relief treatments is shown on the x axis by S1 (early) and S2 (late). Means with asterisks are significantly (P = 0.05) lower than the control.