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    • Journal of Range Management, Volume 38 (1985)
    • Journal of Range Management, Volume 38, Number 3 (May 1985)
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    Germination Characteristics of Helianthus maximilianai Schrad. and Simsia calva (Engelm. and Gray) Gray

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    Author
    Owens, D. W.
    Call, C. A.
    Issue Date
    1985-07-01
    Keywords
    Helianthus
    revegetation plants
    germinability
    Southern Great Plains
    Oklahoma
    Texas
    rangelands
    
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    Citation
    Owens, D. W., & Call, C. A. (1985). Germination characteristics of Helianthus maximilianai Schrad. and Simsia calva (Engelm. & Gray) Gray. Journal of Range Management, 38(4), 336-339.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/645499
    DOI
    10.2307/3899416
    Additional Links
    https://rangelands.org/
    Abstract
    Germination characteristics of Maximilian sunflower (Helianthus maximiliana Schrad.) and awnless bushsunflower {Simsia calva Engelm. & Gray) Gray were evaluated at water potentials of 0, -.25, -0.50, -0.75, and -1.0 MPa under alternating temperature regimes of 10/20, 15/25, and 20/30 degrees C in controlled environmental chambers. Cumulative germination was greatest for both species at water potentials of 0 and -0.25 MPa in the 15/25 degrees C temperature regime. Germination total and rate were depressed for both species in the 10/20 degrees C regime. The 20/30 degrees regime depressed total germination but increased germination rate. The adverse effects of more negative water potentials (-0.75 and -1.0 MPa) were more pronounced at low temperatures for awnless bushsunflower and high temperatures for Maximilian sunflower.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/3899416
    Scopus Count
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    Journal of Range Management, Volume 38, Number 3 (May 1985)

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