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. 2013 Jan 30;64(5):1345–1355. doi: 10.1093/jxb/ers396

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© The Author(2) [2013].

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by-nc/3.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com.

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Fig. 4. — Correlation matrix of all metabolites of berries grown in the vineyard. The Pearson correlation coefficient (positive or negative) between a pair of metabolites is represented by virtual colour as indicated in the colour key. Metabolites were grouped according to their metabolic pathways. A similar matrix was built for the greenhouse-grown berries (data not shown). Comparisons between samples from vineyard and greenhouse are summarized in the Venn diagram (inset), with ‘+’ and ‘–‘ indicating significant positive and negative correlations, respectively.