Technical Abstract: Wheatgrass and wildrye grasses are some of the most important grasses in the temperate regions of the world (Asay and Jensen, 1996a, 1996b). Cultivars of wheatgrass and wildrye grasses are mainly used as forage crops on rangeland and pastures in North America. Their drought and/or salinity tolerance make them suitable plant materials for revegetation and land reclamation. As members of the Triticeae tribe, they are related to and have been hybridized with cultivated cereal crops including wheat (Triticum spp.), barley (Hordeum spp.), and rye (Secale cereale L.) as genetic sources for pest (disease and insect) resistance, salinity tolerance, and other traits.