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. 2019 Aug 14;10:1026. doi: 10.3389/fpls.2019.01026

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Copyright © 2019 Klem, Gargallo-Garriga, Rattanapichai, Oravec, Holub, Veselá, Sardans, Peñuelas and Urban

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Principal component analysis (PC1 vs. PC2) of root-to-leaf ratios of metabolite concentrations of two barley varieties grown for 26 days under different light regimens. Additional details are in the Figure 6 legend.