Fig 4. JIP-test parameters on the acceptor side of PSII in muskmelon seedlings.
A. Relative variable fluorescence at 2 ms (VJ). B. Approximated initial slope of the fluorescence transient (Mo value). C. Probability that a trapped exciton moves an electron into the electron transport chain beyond QA (ψo). Control, plants grown in medium only; CG, medium with leaf spraying with GABA; S, nutrient medium with complex neutral and alkali salt; SG, medium with both complex neutral and alkali salt and leaf spraying with GABA. Data represent the mean ± SE of three independent experiments (n = 3). Different letters indicate significant differences between treatments (p < 0.05).