1. Dep. of Crop & Soil Environmental Sciences; Virginia Tech; Blacksburg VA 20461
2. BioEvaluation Center, Korea Research Institute of Bioscience and Biotechnology; Chungbuk 363-883 Republic of Korea
3. Phillip Morris USA, Research Center; Richmond VA 23261
4. Dep. of Plant Pathology, Physiology & Weed Science; Virginia Tech; Blacksburg VA 24061