Kronos is a modern durum wheat, released by Arizona Plant Breeders in 1992. It was selected from a male-sterile facilitated recurrent selection population (APB MSFRS Pop). Its experimental designation was APB D03-21. It is awned, has medium early maturity, averages about 38 inches in plant height, and has poor straw strength. At the time of release it was resistant to leaf rust, moderately resistant to stripe rust and powdery mildew, and susceptible to Septoria tritici leaf blotch and BYD. It subsequently became susceptible to stripe rust and powdery mildew. It was evaluated as Entry 951 in the UC Regional Cereal Testing program from 1992-present for late fall planting in the Central Valley and the Imperial Valley of California. At the time of its release, Kronos was world renowned as an excellent durum variety, however, many more California Desert Durum varieties, such as Alberto and Desert Gold have usurped it in quality performance.