Turkey is one of the most important durum wheat (T. turgidum L. var. darum Desf.) producers in West Asia and North Africa (WANA). There appears to have been a lack of progress in wheat yields in WANA over recent decades. Most of the modern cultivars grown in WANA are related to crosses produced by the International Maize and Wheat Improvement Center (CIMMYT). During 1999 and 2000, a chronological set of I I cultivars related to CIMMYT crosses was evaluated using two irrigation regimes near Sanliurfa, Turkey.