1. USDA-Agricultural Research Service, U.S. Vegetable Laboratory, Charleston, South Carolina, USA
2. Boyce Thompson Institute for Plant Research, Cornell University, Ithaca, New York, USA
3. Hunan Plant Protection Institute, Hunan Academy of Agricultural Sciences, Changsha, Hunan, China
4. USDA-Agricultural Research Service, Robert W. Holley Center for Agriculture and Health, Ithaca, New York, USA