Initial Rubisco activity (A, D), maximum amplitude of IP phase (B, E) and PI
(C, F) in relation to leaves CO
assimilation and shoot DW in Citrus grandis seedlings. All the values were expressed relative to the sample treated with 2.5 μM B + 0 mM Al set as 1. Maximum amplitude of IP phase = (Fm - Fo)/(FI - Fo) - 1.