Key Laboratory of Forest Genetics&Biotechnology of Ministry of Education of China;
Co-Innovation Center for Sustainable Forestry in Southern China;
Nanjing Forestry University;
Nanjing;
210037;
China;
Jiangsu Key Laboratory for Poplar Germplasm Enhancement and Variety Improvement Nanjing Forestry University;
Nanjing;
210037;
China;
Spermidine; C.lanceolata; somatic embryogenesis; endogenous phytohormones;