1. USDA Agricultural Research Service, Appalachian Fruit Research Station , 2217 Wiltshire Road, Kearneysville, WV 25430 , USA
2. Temperate Tree Fruit and Vegetable Research Unit, USDA Agricultural Research Service , 5230 Konnowac Pass Road, Wapato, WA 98951 , USA
3. Laboratory for Biotechnology and Bioanalysis, Washington State University , 227 Biotechnology/Life Sciences Building, Pullman, WA 99164 , USA
4. Entomology Department, University of Maryland , Plant Sciences Building, 4291 Fieldhouse Drive, College Park, MD 20742 , USA