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. 2017 Jul 24;8:1202. doi: 10.3389/fpls.2017.01202

FIGURE 1.

FIGURE 1

Water potential, gas exchange and photosynthesis measurements under greenhouse conditions. Water potential (Ψw) (A), stomatal conductance (gs) (B), transpiration (E) (C), Net photosynthesis (Pn) (D), Maximal efficiency of PSII (E), quantum yield of non-cyclic electron transport (ΦPSII) (F) and instantaneous water use efficiency (WUEinst) (G) of drought-sensitive and drought-tolerant seed sources under watered (white bars) and drought stressed (black bars) treatments. The letters above the bars marks the significant difference among the drought-stressed seed sources following the post hoc Duncan’s test. Scale bars are mean +SE, being the number of samples n = 15 for Ψw and n = 5 for the other variables.