1. Mekong Delta Development Research Institute, Can Tho University Can Tho Vietnam
2. Agricultural Sciences and Resource Management in the Tropics and Subtropics Faculty of Agriculture University of Bonn Nußallee 1 Bonn 53115 Germany
3. Global Crop Diversity Trust Platz der Vereinten Nationen 7 Bonn 53113 Germany
4. International Rice Research Institute (IRRI) Pili Drive, Los Baños Manila Laguna 4031 Philippines
5. Plant Breeding & Genetics Cornell University Ithaca NY 14850 USA