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. 2016 Nov 11;7:1688. doi: 10.3389/fpls.2016.01688

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Copyright © 2016 Feng, Zheng, Qian, Yang, Zhang, Li and Zhao.

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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(A) Network of the chloroplast (cp) DNA haplotypes detected in three oak species. Different species are denoted by different colors of the circle, each sector of a circle is in proportional to the frequency of each chlorotype. (B) Geographic distribution of the chloroplast (cp) DNA haplotypes detected in three oak species. Haplotype frequencies of each population are denoted by the pie charts with population IDs in the circle. Green, blue and red dots indicate the sample locations of Quercus spinosa, Q. aquifolioides, and Q. rehderiana, respectively.