1. School of Biotechnology Jiangsu University of Science and Technology Zhenjiang P. R. China
2. Sericultural Research Institute, Chinese Academy of Agricultural Sciences Zhenjiang P. R. China
3. Key Laboratory of Silkworm and Mulberry Genetic Improvement Ministry of Agriculture and Rural Affairs Zhenjiang P. R. China
4. Jiangsu Key Laboratory of Sericultural Biology and Biotechnology Jiangsu University of Science and Technology Zhenjiang P. R. China