1. Yunnan Key Laboratory of Sustainable Utilization Research on Rubber Tree, Yunnan Institute of Tropical Crops, Jinghong, Yunnan, China
2. College of Forestry, Sichuan Agricultural University, Chengdu, Sichuan, China
3. School of Biological Sciences, University of Western Australia, Perth, Australia
4. Department of Land, Air and Water Resources, University of California at Davis, Davis, CA, USA