1. Dep. of Biosystems Engineering, and Dep. of Forestry and Natural Resources; Clemson Univ.; Clemson SC 29634
2. Gyeongsangnamdo Agricultural Research and Extension Services; 1085-1 Chojeon-Dong Jinju 660-360 Korea
3. Dep. of Land, Air and Water Resources; Univ. of California; Davis CA 95616
4. Dep. of Biology; The Chinese Univ. of Hong Kong; Hong Kong SAR
5. Dep. of Plant Sciences; Univ. of California; Davis CA 95626