1. Taiwan Agricultural Research Institute Division of Agricultural Chemistry No.189, Zhongzheng Rd., Wufeng Dist. 41362 Taichung City Taiwan
2. National Taiwan University Department of Agricultural Chemistry No. 1, Sec. 4, Roosevelt Rd. 10617 Taipei Taiwan
3. National Chiayi University Department of Agronomy No. 300 Syuefu Rd. 60004 Chiayi City Taiwan