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. 2016 Jul 27;17(8):1217. doi: 10.3390/ijms17081217

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© 2016 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).

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(A,B) PLS-DA model built with positive ionization data (R²X = 0.578, R²Y = 0.942, Q² = 0.916) and negative ionization data (R²X = 0.709, R²Y = 0.967, Q² = 0.944). In both ionization modes these three varieties were clearly separated. Red dots: Einkorn (ID331). Green dots: Emmer (Garfagnana). Blue dots: Spelt (Rouquin).