Fig. 2. Effect of water stress on leaf N and chlorophyll levels during seed filling, Exp. 1. Stress was applied early in seed filling at the beginning of growth stage R6. The time of application of the early stress-relief treatment is shown on the x axis by S₁. The late stress-relief treatment had minimal effects on leaf N and chlorophyll levels and the data are not included. Treatments had no significant (P = 0.05) effect on leaf N levels at growth stage R7 (mean = 0.88 g m^-2), but chlorophyll levels of the stressed treatments (180 g m^-2) were significantly (P = 0.05) less than the control (230 g m^-2). Means with asterisks are significantly (P = 0.05) lower than the control.

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