1. GEMS Informatics Center Univ. of Minnesota St. Paul MN 55108 USA
2. Dep. of Agronomy and Plant Genetics Univ. of Minnesota St. Paul MN 55108 USA
3. Current address: USDA‐ARS Genetic Improvement for Fruits & Vegetables Lab. Chatsworth NJ 08019 USA
4. Dep. of Agronomy Univ. of Wisconsin–Madison Madison WI 53706 USA