Conventional breeding programs in crested wheatgrass [Agropyron cristatum (L.) Gaer tu., A.desertorum (Fisch. ex Link) Schult., and A. fragile (Roth) Candargy] have been confined to selection and hybridization within the ploidy levels of the complex, particularly the diploids (Fairway) and tetraploids (Standard and Siberian). Gene flow among the three ploidy levels of the complex has been accelerated by induced polyploidy and hybridization. 'Hycrest', a cultivar developed from hybrids between induced tetraploid Fairway and natural tetraploid Standard types has shown excellent potential on semiarid range sites.
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