1. International Center for Agricultural Research in the Dry Areas (ICARDA)P.O. Box 5466AleppoSyria
2. International Crops Research Institute for the Semi‐Arid Tropics (ICRISAT)PatancheruAndhra Pradesh502 324India
3. Dep. of Plant BreedingAgric. Univ. of WageningenP.O. Box 386Wageningenthe Netherlands