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The maximum quantum yield of photosystem II (Fv/Fm) in six local varieties (A–F) and one commercial cultivar ‘Supersteak’ (G) of tomato (Solanum lycopersicum L.) subjected to drought stress (no water for 16 days) relative to the controls (regularly well-watered plants). Two-way factorial ANOVA followed by Tukey post-hoc test was used to determine the statistical significance of differences. Points with the same lower-case letters do not differ significantly (p > 0.05).
