1. Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, P.R. China
2. School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, P. R. China
3. Oil Palm Research Institute, Council for Scientific and Industrial Research, Kusi, Ghana
4. Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agricultural and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, P.R. China