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    Author(s): Bradley S. Bushman; Steven R. Larson; Michael D. Peel; Michael E. Pfrender
    Date: 2007
    Source: Crop Science. 47: 1281-1288.
    Publication Series: Scientific Journal (JRNL)
    Station: Rocky Mountain Research Station
    PDF: View PDF  (780.65 KB)

    Description

    Hedysarum boreale Nutt. is a perennial legume native to western North America, with robust foliage in the late spring season. Due to its wide native range, forage value, and N2 fixation, H. boreale is of interest for rangeland revegetation and production. Seed cost is a major obstacle for utilization of H. boreale, primarily due to seed shattering and unreliable seed production, such that a need for improved germplasm exists. This study characterized the genetic relationships of H. boreale accessions, so plant breeders and geneticists will have the information necessary to maintain a broad genetic base within selected germplasm populations. Amplified fragment length polymorphism markers were used on 17 available accessions from Utah, Idaho, Colorado, and Alaska. Seventy percent of the total genetic variation was found within all 17 accessions, yet each accession showed significant isolation by distance. Genetic diversity within accessions was greatest in sites located in eastern Utah. The sole cultivar, Timp, had slightly greater genetic diversity than a collection made from the same site approximately 20 yr later. Two groups of metapopulations were identified in Utah, separated longitudinally approximately along the Wasatch mountain range.

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    Citation

    Bushman, Bradley S.; Larson, Steven R.; Peel, Michael D.; Pfrender, Michael E. 2007. Population structure and genetic diversity in North American Hedysarum boreale Nutt. Crop Science. 47: 1281-1288.

    Keywords

    Hedysarum boreale Nutt., AFLP, amplified fragment length polymorphism, AMOVA, analysis of molecular variance

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