Figure 2. PSII and PSI activity in leaves during dark-submergence treatment.

The efficiency of electron moves beyond Q_A ⁻ (Ψo), maximum quantum yield of PSII (Fv/Fm), density of Q_A-reducing PSII reaction centers per cross section (RC/CSm) and activity of PSI complex in daylily (A, E, I, M), willow (B, F, G, H), euonymus (E.) japonicus (C, G, K, O) and maize (D, H, L, P) leaves during dark-submergence treatment (DST) were obtained by the JIP-test and the analysis of 820 nm light reflection. Means ± SE of eight replicates are presented. Different letters indicate significant differences between the treatments, P<0.05. Differences were analyzed by least significant difference (LSD).