Ashfaq A. Sial, ashfaqsial@yahoo.com, Bonnie Ohler, jantzerb@yahoo.com, Jeremy Buchman, Jeremy.Buchman@ARS.USDA.GOV, and Nicolai Wiman, nwiman@wsu.edu. Washington State University, Tree Fruit Research and Extension Center, 1100 N. Western Avenue, Wenatchee, WA