1. 1Professor and Extension berry Crops Specialist, Department of Horticulture, Oregon State University, 4017 ALS, Corvallis, Oregon 97331-7304
2. 2Professor, Department of Horticulture, Plant Science 316, University of Arkansas, Fayetteville, Arkansas 72701
3. 3Research Geneticist, USDA-ARS, Horticultural Crops Research Lab, 3420 NW Orchard Ave., Corvallis, Oregon 97330
4. 4Profesora, Facultad de Agronomía e Ingeniería Forestal, Pontificia Universidad Católica de Chile, Casilla 306-22, Santiago, Chile