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