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. 2022 Mar 10;13:857980. doi: 10.3389/fpls.2022.857980

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Copyright © 2022 Raza, Su, Jia, Luo, Zhang, Gao, Hussain, Mehmood, Cheng, Lv and Zou.

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 analysis (PCA) of (A) individual treatments by PCA and (B) different studied indices of rapeseed seedlings grown under four treatments [control (CK), CK + Tre, Cold, and Cold + Tre] and three stress conditions (4, 0, and –4°C). (A) Score plot signifies the partition of treatments as (1) CK_4°C, (2) CK + Tre_4°C, (3) Cold_4°C, (4) Cold + Tre_4°C, (5) CK_0°C, (6) CK + Tre_0°C, (7) Cold_0°C, (8), Cold + Tre_0°C, (9) CK_–4°C, (10) CK + Tre_–4°C, (11), Cold_–4°C, and (12) Cold + Tre_–4°C. Other abbreviations are defined in the main text.