1. Key Laboratory of Southwest China Wildlife Resources Conservation (China West Normal University), Ministry of Education, Nanchong, Sichuan 637009, China
2. Cangxi Middle School of Sichuan, Guangyuan, Sichuan 628400, China
3. Sericultural Research Institute, Sichuan Academy of Agricultural Sciences, Nanchong, Sichuan 637000, China
4. Institute of Plant Adaptation and Utilization in Southwest Mountain, China West Normal University, Nanchong, Sichuan 637009, China