Key Laboratory of Forest Genetics & Biotechnology, Nanjing Forestry University, Nanjing, China.|Key Laboratory of Forest Genetics & Biotechnology, Nanjing Forestry University, Nanjing, China.|Key Laboratory of Forest Genetics & Biotechnology, Nanjing Forestry University, Nanjing, China.|Key Laboratory of Forest Genetics & Biotechnology, Nanjing Forestry University, Nanjing, China.|Key Laboratory of Forest Genetics & Biotechnology, Nanjing Forestry University, Nanjing, China. tmyin@njfu.com.cn.