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. 2022 Oct 3;13:1015574. doi: 10.3389/fpls.2022.1015574

Figure 4.

Figure 4

Progression of Leaf Gas Exchange as Affected by Trellis Systems and Applied Water Amounts of ‘Cabernet Sauvignon’ in Oakville, CA, USA in (A) 2020 and (B) 2021; (a) the main effect of trellis systems, (b) the main effect of applied water amounts; (1) stomatal conductance (g s), (2) net carbon assimilation rate (A n), (3) intrinsic water use efficiency (WUEi). Error bars represent one standard deviation from the mean, letters represent ranking after Tukey’s post hoc analyses. Asterisks represents significant levels p, ‘***’p< 0.001, ‘**’p< 0.01, ‘*’p< 0.05. Arrows above individual dates indicate statistical difference between starting date and the indicated date. VSP, vertical shoot position; VSP60, vertical shoot position 60°; VSP80, vertical shoot position 80°; SH, single hire wire; HQ, High-Quadrilateral; GY, guyot-pruned vertical shoot position; ETc, crop evapotranspiration. ns, not signigficant.