Submitted to: Native Plants Journal
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 7/15/2016
Publication Date: 10/1/2016
Citation: Robins, J.G., Bushman, B.S. 2016. Notice of release of 'Trailhead II' basin wildrye. Native Plant Journal. 17:273-280.
Interpretive Summary: 'Trailhead II' is a new tetraploid basin wildrye that was developed and released by the Agricultural Research Service in 2016. Trailhead II was selected from the cultivar 'Trailhead' for increased emergence from deep seeding. Trailhead II was tested at field locations in the Intermountain and northern Great Plains U.S. The results of these tests were that Trailhead II possessed higher seedling establishment than Trailhead. Additionally, Trailhead II established at a higher percentage and more rapidly than Trailhead when seeded at 3 inch depths. Trailhead II is an improved basin wildrye option for revegetation of disturbed rangeland sites.
Technical Abstract: 'Trailhead II' basin wildrye [Leymus cinereus (Scribn. & Merr.) A. Love] is a tetraploid basin wildrye release for use in re-vegetation efforts on rangelands of western North America. Trailhead II is the result of two cycles of recurrent selection within the basin wildrye cultivar 'Trailhead' for rapid seedling emergence from deep seeding. Trailhead II is genetically distinct from Trailhead. Additionally, in comparisons between Trailhead II and Trailhead, Trailhead II possessed higher total emergence and more rapid emergence from deep seeding (7.6 cm) and exhibited higher seedling establishment at three of five field sites where it was evaluated in Nevada, Utah, and Wyoming. The release of Trailhead II basin wildrye improves this native germplasm to enhance the success of conservation and re-vegetation plantings in the Intermountain West and Northern Great Plains areas of the United States and Canada.