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. 2016 Mar 5;17:186. doi: 10.1186/s12864-016-2551-3

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© Ma et al. 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 2 — Comparison of Al tolerance in hydroponic culture. a Net root growth of seedlings after four days in nutrient solution containing 0, 1 or 4 μM AlCl₃ (pH =4.3). b Relative root length at each Al concentration in contrast with controls. Data showed means and standard error (SE) (n = 4-7)