1 United States Department of Agriculture, Agriculture Research Service, Vegetable Crops Research Unit, Horticulture Department, University of Wisconsin, Madison, WI, United States.
2 Center for Research in Agricultural Genomics (CRAG) Consejo Superior de Investigaciones Científicas - Institut de Recerca i Tecnologia Agroalimentàries - Universitat Autònoma de Barcelona - Universitat de Barcelona, Barcelona, Spain.
3 Genomics and Biotecnology Program, Institut de Recerca i Tecnologia Agroalimentáries (IRTA), Barcelona, Spain.
4 US Vegetable Laboratory, United States Department of Agriculture, Agriculture Research Service, Charleston, SC, United States.
5 Key Laboratory of Biology and Genetic Improvement of Horticulture Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin, China.