About the Authors

Ke Xia

Affiliations Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China, Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China

Matthew I. Daws

Affiliations Alcoa of Australia Ltd, Pinjarra, Western Australia, Australia, Seed Conservation Department, Royal Botanic Gardens, Kew, United Kingdom

Wolfgang Stuppy

Affiliation Seed Conservation Department, Royal Botanic Gardens, Kew, United Kingdom

Zhe-Kun Zhou

zhouzk@mail.kib.ac.cn (Z-KZ); h.pritchard@kew.org (HWP)

Affiliations Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, Yunnan, China

Hugh W. Pritchard

zhouzk@mail.kib.ac.cn (Z-KZ); h.pritchard@kew.org (HWP)

Affiliations Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China, Seed Conservation Department, Royal Botanic Gardens, Kew, United Kingdom

Competing Interests

Matthew I Daws is a paid employee of Alcoa of Australia Ltd. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: KX MID WS HWP. Performed the experiments: KX WS. Analyzed the data: KX MID. Contributed reagents/materials/analysis tools: HWP Z-KZ KX. Wrote the paper: KX MID WS HWP Z-KZ.