1. Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology , Zhenjiang, Jiangsu 212100 , China
2. Guangxi General Station for Sericulture Technology Popularization , Nanning, Guangxi 530007 , China
3. Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences , Zhenjiang, Jiangsu 212100 , China