Workshop on New Grass Germplasms
57
rent cultivars. When evaluated on harsh sites (250 to 350 mm of annual precipita-
tion) and under close row spacings (0.5 vs. 1.0 m), yields were equal to or less
than current cultivars.
Seed stocks of RWR-Tetra-1 are maintained by the USDA-ARS, Forage and
Range Research Laboratory, Utah State University, Logan, Utah 84322-6300,
and genetic material of this release will be deposited in the National Plant Germ-
plasm System, where it will also be available for research purposes, including
development and commercialization of new cultivars.
Registration of `RoadCrest' crested wheatgrass
Published in Crop Science, 39: 1535 (1999)
Asay, K.H., K.B. Jensen, W.H. Horton, D.A. Johnson, N.J. Chatterton, and
S.A. Young
`RoadCrest' crested wheatgrass (Agropyron crestatum [L.] Gaertn.) (Reg.
No. CV-25, PI 606546), a rhizomatous cultivar, was developed by the USDA-
ARS Forage and Range Research Laboratory, Utah State University, Logan,
Utah. This research was partially funded under the SERDP Program.
RoadCrest is a long-lived perennial and is significantly more rhizomatous
than the only other released rhizomatous crested wheatgrass, Ephraim. RoadCrest
produces less biomass and is 15 to 25% shorter than forage-type crested wheat-
grass cultivars, making it suitable in areas where mowing is necessary, such as
gunnery ranges and roadside plantings. Seedling vigor and drought resistance of
RoadCrest compares favorably with other crested wheatgrasses, and RoadCrest
initiates growth earlier in the spring than other turf and low-maintenance grasses.
Genetic material of this release will be deposited in the National Plant Germ-
plasm System, where it will also be available for research purposes, including
development and commercialization of new cultivars.
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