1. State Key Laboratory of Crop Genetics and Germplasm Enhancement; Cotton Hybrid R&D Engineering Center (the Ministry of Education); College of Agriculture; Nanjing Agricultural University; Nanjing 210095 China
2. Agronomy Department; College of Agriculture and Biotechnology; Zhejiang University; Hangzhou 310029 China
3. National Key Laboratory of Plant Molecular Genetics; National Plant Gene Research Center; Institute of Plant Physiology and Ecology; Shanghai Institutes for Biological Sciences; Chinese Academy of Sciences; Shanghai 200032 China