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. 2016 Mar 15;7:312. doi: 10.3389/fpls.2016.00312

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Copyright © 2016 Tóth, Undas, Verstappen and Bouwmeester.

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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Hierarchical clustering diagram of the flower VOC profiles of 32 species studied. HCA was performed with R and based on PCA of significantly different flower blends. Numbers at nodes are bootstrap probability P-value (BP, upper green numbers) and approximately unbiased P-values (AU, lower red numbers). The definition of the two genera of Orobanche is designated in orange (genus Orobanche) and blue (genus Phelipanche) bar; section Arenariae is also indicated (subsections within genus Orobanche are shown in Figure 6).