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. 2021 Feb 26;12:631421. doi: 10.3389/fpls.2021.631421

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Copyright © 2021 Du, Huang, Cai, Hao, Qiu, Liu, Cui and Luo.

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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Total antioxidant activity in rice seedling extracts exposed to chilling treatments spanning different durations. (A) Antioxidant activity of 2,2-diphenyl-1-picrylhydrazyl (DPPH). (B) Antioxidant activity of ferric reducing antioxidant power (FRAP) assays. Bars represent means and SD (n = 3). For each group, significant mean differences (p < 0.05) are shown by different lowercase letters.