1. Beijing Advanced Innovation Center for Tree Breeding by Molecular Design National Engineering Laboratory for Tree Breeding College of Biological Sciences and Technology Beijing Forestry University Beijing 100083 China
2. Department of Genetics University of Georgia Athens GA 30602 USA
3. State Key Laboratory of Subtropical Silviculture College of Forestry and Biotechnology Zhejiang A&F University Lin’an Hangzhou 311300 China
4. Beijing Key Laboratory of Lignocellulosic Chemistry Beijing Forestry University Beijing 100083 China