1. Dep. of Agronomy and Plant Genetics Univ. of Minnesota 1991 Upper Buford Circle, 411 Borlaug Hall St. Paul MN 55108
2. Dep. of Crop Science Federal Univ. of Rio Grande do Sul Porto Alegre RS Brazil
3. Pepsico Rhinelander WI 54501
4. Anheuser‐Busch Fort Collins CO 80524