Affiliation: | 1.Institute of Paulownia, Henan Agricultural University, 95 Wenhua Road, Jinshui Area, Zhengzhou 450002, Henan, China; E-Mails: (Y.D.); (Z.Z.);2.College of Forestry, Henan Agricultural University, 95 Wenhua Road, Jinshui Area, Zhengzhou 450002, Henan, China; E-Mail: |