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Figure 2: Boxplot of carbon isotope discrimination (Δ) across five environments (a) and environment-specific scatterplots of grain yield (t ha-1) and Δ (b–f) collected from a diverse panel of winter wheat grown in five Pacific Northwest environments—(b) Pullman 2015, (c) Pullman 2016, (d) Pullman 2017, (e) Lind 2017, and (f) Pendleton 2017.