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. Author manuscript; available in PMC: 2021 Jun 28.
Published in final edited form as: Mol Ecol. 2018 Sep 19;27(20):4052–4065. doi: 10.1111/mec.14838

Figure 2.

Figure 2

Stomata size correlates with water-use efficiency. δ13C was measured for all plants in block 1. Plots show correlation of stomata size (block 1 only) with δ13C. δ13C is expressed as ‰ against the Vienna Pee Dee Belemnite (VPDB) standard. The red line shows a linear fit, and grey shadows indicate the error of the fit. Pearson’s product-moment correlation: r = -0.18, p = 0.004. Correlation of δ13C and stomata size is not only driven by the Spanish outlier (correlation without outlier: r = -0.16, p = 0.009). Genetic correlation was calculated using the MTMM approach: r = -0.58, p < 0.05