Fig. 1.
K leaf, A, g s and Ψleaf for each measured leaf stage in all experiments (2011 field experiment, A, D, G, J; 2013 field experiment, B, E, H, K; growth chamber experiment, C, F, I, L). K leaf (A–C) was measured with the evaporative flux method for leaves sampled before sunrise, A (D–F) and g s (G–I) were measured with a LI-COR 6400 Portable Photosynthesis System and midday Ψleaf (J–L) was measured with thermocouple psychrometers. When two stage B measurements were taken, the earlier stage B measurement is represented by light grey and the later measurement is represented by dark grey. Error bars represent standard error.