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. 2020 Feb 24;71(7):2312–2328. doi: 10.1093/jxb/eraa068

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© The Author(s) 2020. Published by Oxford University Press on behalf of the Society for Experimental Biology.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 4. — Comparison between observed photosynthetic parameters and those predicted from PLS regression of plot-level sunlit leaf reflectance using a single VNIR hyperspectral camera (450–900 nm) for V_c,max (A), J₁₈₀₀ (B), chlorophyll content (C), Chl a:b (D), C content (E), and N content (F) in performance test 1, and P_max (G) and ϕCO₂ (H) in performance test 2. Observed parameters are the mean of 3–5 leaf-level ground truth measurements, and predictions are the mean of 1000 times cross-validation of the model.