Location: Forage and Range ResearchTitle: Notice of release of White River germplasm Indian ricegrass Author
Submitted to: Native Plant Journal
Publication Type: Germplasm Registration
Publication Acceptance Date: 5/16/2010
Publication Date: 7/1/2010
Citation: Jones, T.A., Winslow, S.R., Parr, S.D., Memmott, K.L. 2010. Notice of release of White River germplasm Indian ricegrass. Native Plant Journal. 11:133-136. Interpretive Summary: Indian ricegrass is a highly ecotypic species that is valued for winter forage for wildlife and livestock. While this species is widespread throughout the Colorado Plateau of western Colorado and eastern Utah, no germlasm from this region has been released. White River germplasm was selected for high seed yield and germinability within a population originating in northwestern Colorado. White River will become a component of seed mixes for rangelands in the upper portion of the Colorado Plateau.
Technical Abstract: White River Germplasm Indian ricegrass (Achnatherum hymenoides [Roem. & Schult.] Barkworth) has been released for use in rangeland seedings. This plant material traces from a seed morph collected in northwestern Colorado in Rio Blanco County, near the White River. White River Germplasm displays good germinability in a species characterized by high levels of seed dormancy. It is anticipated that this material wil be used in the Upper Colorado Plateau of eastern Utah and western Colorado and the Basin Province of southern Wyoming.