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    • Journal of Range Management, Volume 49 (1996)
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    Germination and root growth of 4 osmoconditioned cool-season grasses

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    Author
    Mueller, D. M.
    Issue Date
    1996-03-01
    Keywords
    Russian wildrye
    western wheatgrass
    intermediate wheatgrass
    crested wheatgrass
    
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    Citation
    Mueller, D. M. (1996). Germination and root growth of 4 osmoconditioned cool-season grasses. Journal of Range Management, 49(2), 117-120.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/644258
    DOI
    10.2307/4002679
    Additional Links
    https://rangelands.org/
    Abstract
    Establishment of grass species used in range reseeding should improve if germination time can be decreased. Osmotically controlling the hydration of seed so that germination processes proceed other than radicle emergence (osmoconditioning) can decrease germination time of many plant species. Growth chamber esperiments were conducted to evaluate effects of osmoconditioning at -1.5, -2.0, and -2.5 hlpa for 4,8,12,16, and 20 days on germination and root growth of ‘Flintlock’ western wheatgrass (Pascopyrum smithii (Rydb.) A. Löve) and ‘Vinall’ Russian wildrye (Psathyrostuchys juncea (Fischer) Nevski) and at -2.0, -2.5, and -3.0 hWa for 4, 8, 12, 16, and 20 days on ‘Nordan’ Crested wheatgrass (Agropyron desertorum (L.) Gaertn.) and ‘Tegmar’ intermediate wheatgrass (Agropyron intermedium (Host) Beauv.). A second study looked at germination time of seed from the same species conditioned at osmotic potentials and durations producing the shortest time to 50% germination (optimum conditioning) and air dried for 0, 1, or 7 days. Conditioned seed of Russian wildrye and western wheatgrass germinated 2 to 4 days faster, respectively than untreated seed. Optimum conditioning of seed from all 4 species produced seedlings with roots 20 to 67% shorter 4 days after germination than seedlings from untreated seed. Conditioned western wheatgrass seed continued to germinate faster than untreated seed after being air dried for 7 days. Slow root growth from conditioned seed may negate any benefits derived from rapid germination.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/4002679
    Scopus Count
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    Journal of Range Management, Volume 49, Number 2 (March 1996)

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