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. 2015 May 21;6:361. doi: 10.3389/fpls.2015.00361

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Copyright © 2015 Ying, Song, Jacobs, Mei, Liu, Jin and Wu.

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) or licensor 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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Changes in the SOD (A) and POD (B) activities in provenance NC, which grows in a higher rainfall area, and provenance KM, which grows in a lower rainfall area, subject to three different drought treatments (control: watered and maintained at 75% field capacity; MWS: moderate water stress, watered and maintained at 50% field capacity; SWS: severe water stress, watered and maintained at 30% field capacity). Values are the mean ± SD (n = 3). Similar letters indicate non-significant differences among treatments and between provenances at p < 0.05 according to Mann–Whitney test.