1. Department of Science Education, National Taipei University of Education, No. 134, Sect. 2, He-Ping E. Road, Taipei, 10671, Taiwan
2. Department of Plant Pathology, 1453 Fifield Hall, P.O. Box 110680, University of Florida, Gainesville, Florida 32611-0680
3. Department of Applied Science, National Hsinchu University of Education, Hsinchu, 30014, Taiwan