Fig. 6.
Changes in Maximum efficiency of PSII photochemistry, Fv/Fm (a), efficiency of PSII photochemistry, Y (b), Maximum fluorescence, Fm (c) and steady state fluorescence, Fo (d) of olive leaves subjected to drought for 21 days, rewatering for 60 days and intermediate drought for 30 days. Bars with different letters are significantly different (P < 0.05) (n = 6 ± SE).