Fig. 4.

Fitted responses of A/C_i curves at 28 °C. The seasonal average of the apparent V_cmax (µmol m⁻² s⁻¹, SE <3.6–8.3>) and apparent J_max (µmol m⁻² s⁻¹, SE <7.2–14.9>) from eight cultivars of cassava (from A–H) grown at ambient (AMB CO₂; blue lines) and elevated (ELE CO₂; red lines) [CO₂] are indicated in the inserted tables. Effects of elevated [CO₂] on apparent V_cmax and apparent J_max were not significant. The blue and red vertical lines represent the supply functions (1/–g_s) for the ambient and elevated [CO₂] treatments, respectively. The supply functions intercept the fitted A/C_i at the operating point.