1. Agricultural Biotechnology Centre, Faculty of Agriculture, Univ. of Peradeniya; Peradeniya Sri Lanka
2. Regional Agricultural Research and Development Centre, Makandura; Gonawila Sri Lanka
3. Dept of Crop Science; Faculty of Agriculture, Univ. of Peradeniya; Peradeniya Sri Lanka
4. Dept of Plant Sciences; Univ. of California; Davis CA USA