Fig. 8.

Response of midday leaf water potential at different soil water potentials to changes in ${\tau }_{\text{root, transp}}\text{},$${\tau }_{{\text{g}}_s\text{, ABA}}$ and ${\tau }_{{\text{g}}_s\text{, }{\psi }_{\text{leaf}}}\text{}.$ Row 1 represents low evaporative conditions (2.4 mg per plant s⁻¹), and row 2 represents high evaporative conditions (6 mg per plant s⁻¹). The colour gradient from purple to red represents increasing absolute value of the tested parameter, 10–210 % of the default value. One extra simulation (dark red points and lines), 10 times the default value was added for both ${\tau }_{{\text{g}}_s\text{, ABA}}$ and ${\tau }_{{\text{g}}_s\text{, }{\psi }_{\text{leaf}}}\text{}.$ Black lines represent the 1: 1 lines.