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United States Department of Agriculture

Agricultural Research Service

Research Project: Collection and Evaluation of Plant Materials for Rangelands of the Intermountain Region of the Western U.S.

Location: Forage and Range Research

2012 Annual Report


1a.Objectives (from AD-416):
Collect and evaluate promising plant materials for use in improving degraded rangelands in the western U.S. to help develop an understanding of the ecology and physiology of these plant materials.


1b.Approach (from AD-416):
Seed and associated passport data of promising grasses and forbs will be collected at wildland sites in the Intermountain Region of the western U.S. Field, laboratory and greenhouse studies will be conducted to evaluate these collections for germination, establishment, forage and seed production, competitiveness, and persistence. These evaluation data will be critical in identifying the most promising collections for further testing and eventual release.


3.Progress Report:

The main objectives of this project were.
1)to collect and evaluate wildland collections of potentially important rangeland plant species seed and;.
2)to develop new plant materials for these species and increase initial seed supplies of them to permit commercialization by the seed industry. Species that are being developed under this project include the grasses Elymus elymoides, Achnatherum thurberianum, and Leymus salinus; the legumes Astragalus filipes, Dalea ornata, Dalea searlsiae, and Lotus utahensis, and the forb Linum lewisii.

During FY 2012: Wildland collections were made of L. utahensis (Arizona, Utah, Nevada), D. searlsiae (Nevada, Utah), and A. filipes (Nevada). A field trial of 37 L. lewisii populations with a check entry of ‘Appar’ L. perenne was established at Millville, UT. A trial evaluating progress from five cycles of selection for spike production in L. salinus was also established at Millville. Seed increases of E. elymoides pre-variety germplasms (Sand Hollow, Rattlesnake, Toe Jam Creek, Fish Creek, Pleasant Valley, and Antelope Creek) were established and/or harvested. Seed increases were also established for A. thurberianum. Seed increases were harvested for A. filipes (NBR-1), D. ornata (Spectrum), and D. searlsiae (Elephant Knoll).


Last Modified: 10/1/2014
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