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. 2017 Jun 13;8:1016. doi: 10.3389/fpls.2017.01016

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Copyright © 2017 Haworth, Catola, Marino, Brunetti, Michelozzi, Riggi, Avola, Cosentino, Loreto and Centritto.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Chlorophyll fluorescence measurements of Moroccan (gray) and Italian (white) A. donax ecotypes grown in the field under irrigated control (open) and rain-fed drought (hatched) conditions: (A) maximum quantum efficiency of PSII (F_v/F_m); (B) actual quantum efficiency of PSII (ΦPSII), and; (C) non-photochemical quenching (NPQ). Error bars indicate one standard error either side of the mean (n = 6). Letters indicate homogenous groups determined using a one-way ANOVA and LSD post hoc test.