1. National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
2. Arizona Genomics Institute, University of Arizona, Tucson, Arizona 85721
3. State Key Laboratory of Agrobiotechnology, China Agricultural University, Beijing 100193, China
4. Waksman Institute, Rutgers University, Piscataway, New Jersey 08854
5. Department of Genetics, University of Georgia, Athens, Georgia 30602