1. Dep. of Plant Sciences North Dakota State Univ. Fargo ND 58108‐6050 USA
2. North Central Research Extension Center NDSU 5400 Hwy. 83 South Minot ND 58701 USA
3. Edward T. Schafer Agricultural Research Center USDA‐ARS 1616 Albrecht Blvd. N Fargo ND 58102‐2765 USA
4. USDA–ARS Plant Germplasm Introduction and Testing, Washington State Univ. Pullman WA 99164 USA
5. USDA–ARS Grain Legume Genetics and Physiology Research Pullman WA 99164 USA
6. Dep. of Horticulture Washington State Univ. Pullman WA 99164 USA