Thylakoid electron transport potential.

<p>Changes in the thylakoid electron transport rates associated with PSII (with and without the inclusion of OEC) and PSI in the leaves of <i>C. arabica</i> (Icatu and IPR 108) and <i>C. canephora</i> (Conilon CL 153) grown under 380 (white bar) and 700 (black bar) μL CO₂ L^-1. For each parameter, the mean values + SE (n = 4) followed by different letters express significant differences between cultivars for the same CO₂ treatment (a, b) or between CO₂ treatments within the same cultivar (r, s). The ANOVAs for PSII+OEC, PSII-OEC and PSI showed significant differences between cultivars for the same CO₂ treatment and between CO₂ treatments within the same cultivar, as well for the interaction between genotype and growth CO₂ (except in PSI for the interaction).