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. 2016 May 3;7:584. doi: 10.3389/fpls.2016.00584

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Copyright © 2016 Gagné-Bourque, Bertrand, Claessens, Aliferis and Jabaji.

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) or licensor 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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Partial least squares-discriminant analyses (PLS-DA) PC1/PC2 score plot (A) and corresponding coefficient (Coeffs) (B) plot for the comparison between timothy plants grown under WW and water-stressed (DRY) conditions. The ellipse represents the Hotelling T² with 95% confidence interval. Four biological replications each consisting of ten plants were performed per treatment [Q_(cum)²; cumulative fraction of the total variation of the X’s that can be predicted by the extracted components, R²X and R²Y; the fraction of the sum of squares of all X’s and Y’s explained by the current component, respectively].