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. 2016 Apr 18;16:89. doi: 10.1186/s12870-016-0776-6

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© Jiang 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 — Box plot of genetic differentiation (Φst) between each of the three species pairs based on nuclear and SSR data sets. NJ, JL and NL represent the Φ _st value between P. nigra and P. × jrtyschensis, P. × jrtyschensis and P. laurifolia, P. nigra and P. laurifolia. The Φ _st of each locus was estimated individually by AMOVA. Divergence between P. × jrtyschensis and parent species is lower than that between parent species as expected for a hybrid species