Fig. 6

Changes of the Vj (a, c) and Vi variables (b, d) calculated from rapid fluorescence induction curves (see Fig. 5) caused by various Se doses (2.5, 8.5 and 25 mg Se per g of DW) after 72 h of experiment (a, b). The effect of various light intensities of 250, 500 and 750 µmol photons m⁻² s⁻¹ in the presence of exposure to 16 mg g⁻¹ selenium on the Vi (c) and Vj (d) variables shown after 72 h. Control means no Se addition