Affiliation: | 1. College of Life Sciences and Biotechnology, Beijing Forestry University, , Beijing, 100083 P.R. China;2. Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, , Beijing, 100083 P.R. China;3. The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of Chinese Forestry Administration, National Engineering Laboratory for Tree Breeding, , Beijing, 100083 P.R. China |