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. 2021 Jun 28;22(13):6961. doi: 10.3390/ijms22136961

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© 2021 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 (https://creativecommons.org/licenses/by/4.0/).

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(a) PCA analysis of Narvik (G1) and Gružanski zlatni (G2) tomato cultivars, grown in the polytunnel without (C) or with T. harzianum application (T), involving chlorophyll (Chl), epidermal flavonols (Flav), nitrogen balance index (NBI), anthocyanin (Anth), relative water content (RWC (%)), stem diameter base (STB (cm)) and stem diameter middle (STM (cm)). (b) Correlation matrix (Pearson’s product correlation coefficient) with the associated p value between the principal components and the analyzed variables.