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Effects of dehydration on carbon dioxide assimilation rate, photochemical efficiency of PSII, and nonphotochemical quenching (NPQ) in the wheat cvs Adamello and Ofanto. Bars represent the se from four independent experiments. One-way analysis of variance was used for comparisons between the means. Bars with different letters are significantly different at P ≤ 0.01. Black bars, Control; white bars, drought-stressed.
