1. State Key Laboratory of Tree Genetics and Breeding, Non-timber Forest Research and Development Center; Chinese Academy of Forestry; Zhengzhou 450003 China
2. State Key Laboratory of Tree Genetics and Breeding; Research Institute of Forestry; Chinese Academy of Forestry; Beijing 100091 China
3. Chemistry department; University of Missouri-Columbia; Columbia MO 65201 USA
4. Inertia Shanghai Biotechnology Co., Ltd.; Shanghai 200335 China