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. 2023 Mar 14;12(6):1306. doi: 10.3390/plants12061306

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© 2023 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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F_v/F_m, indicator of freezing damage to PSII, measured after freezing stress at −14 °C and 48h of recovery under acclimation conditions. Experiment on whole plants. The colour of the boxes indicates membership to the red and blue clusters according to De Flaviis et al. [5], with Solina 21 belonging to the blue cluster closest to the red cluster shown in purple. F_v/F_m did not differ significantly for accessions with the same letter according to Kruskal-Wallis test and multiple comparison with Bonferroni correction.