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. 2020 Nov 19;11:597823. doi: 10.3389/fpls.2020.597823

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Copyright © 2020 Carillo, Dell’Aversana, Modarelli, Fusco, De Pascale and Paradiso.

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) and the copyright owner(s) 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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Principal component loading plot and scores of principal component analysis (PCA) of starch, soluble carbohydrates, photosynthetic pigments (only for leaves), polyphenols, soluble proteins, and amino acids of tuberous roots (A) and leaves (B) of two hybrids (MBO and MDR) of Ranunculus asiaticus L. at the growth stage of rosette and flowering. The plants underwent different photoperiodic lighting treatments: NL, NL + photoperiodic lighting with fluorescence light (FL), NL + photoperiodic lighting with LEDs R:FR 3:1 (R:FR 3:1), and NL + photoperiodic lighting with LEDs R:FR 1:3 (R:FR 1:3).