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. 2014 Jun 7;15(1):444. doi: 10.1186/1471-2164-15-444

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© Li et al.; licensee BioMed Central Ltd. 2014

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. 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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Species tree of five Rosaceae species. Star indicates the occurrence of WGD; Numbers in the figures indicate species divergence time. Unit:MYA (million years ago). The data were downloaded from NCBI (http://www.ncbi.nlm.nih.gov/) Common Tree in Taxonomy section and the tree was constructed by MEGA5.