1. Division of Plant Bioscience; Kyungpook National Univ.; Daegu 702-701 Republic of Korea
2. USDA-ARS; Plant Genetics Research Unit; 110 Waters Hall Columbia MO 65211
3. Dep. of Plant Sciences; Univ. of Tennessee; Knoxville TN 37996
4. USDA-ARS; Crop Genetics Research Unit.; Stoneville MS 38776
5. Dep. of Crop Science; Chungbuk National Univ.; Cheongju 362-763 Republic of Korea
6. Division of Plant Sciences; Univ. of Missouri-Delta Research Center; Portageville MO 6387