1. Dep. of Agronomy & Plant GeneticsUniv. MinnesotaSt. PaulMN55108
2. Holden's Foundation SeedsP.O. Box 839WilliamsburgIA52361
3. Iowa State Univ., Southeast Research FarmCrawfordsvilleIA52621
4. Fac. of Biol. Resource Sci.Chonbuk Natl. Univ.Chonju561‐756Korea