1. Department of Plant Breeding and Genetics, PIR Mehr Ali Shah-Arid Agriculture University, Rawalpindi 46000, Pakistan
2. School of Integrative Plant Science, Plant Pathology and Plant Microbe Biology Section, Cornell AgriTech, Geneva, NY 14456, U.S.A.
3. USDA-ARS Grape Genetics Research Unit, Geneva, NY 14456, U.S.A.