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. 2021 Dec 29;17(1):2013638. doi: 10.1080/15592324.2021.2013638

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© 2022 The Author(s). Published with license by Taylor & Francis Group, LLC.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 2. — Effects of cold acclimation on OJIP curve (a), standardized OJIP curve (b), F_v/F_m(c) and V_J (d) of tobacco seedling leaves under 4℃ cold stress.

Note. The data in the figure is the average value of three replicated samples. Different letters indicate significant differences among different treatments at P < .05.