1. Escuela de Agronomía Pontificia Universidad Católica de Valparaíso Quillota 2260000 Chile
2. Department of Viticulture and Enology University of California Davis CA 95618 USA
3. Advanced Light Source Lawrence Berkeley Laboratory Berkeley CA 94720 USA
4. School of Forestry & Environmental Studies Yale University New Haven CT 06511 USA
5. Crops Pathology and Genetics Research Unit USDA‐ARS Davis CA 95618 USA