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    Photosynthetic Responses to Irradiance in Three Forest Understory Species of the C4 Grass Genus Muhlenbergia

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    Martin_BotGaz_148_275-282.pdf (17.75Mb)
    Issue Date
    1987
    Author
    Smith, Marian
    Martin, Craig E.
    Publisher
    The University of Chicago Press
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
    Published Version
    http://www.jstor.org/stable/2995345
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    Abstract
    Three species of the C4 grass genus Muhlenbergia—M.frondosa, M. sobolifera, and Af. schreberi—were collected from forest understory habitats in Kansas and grown in a growth chamber at 1,500, 150, and 15- 25 |xmol m"2 s"1 photosynthetic photon flux density (PPFD). Assimilation (A), conductance to C02 , intercellular C02 concentration, chlorophyll (chl) concentrations, and photosystem I electron-transport capacity were determined and compared with results for Af. cuspidata, which occurs only in open, prairie areas. All of the shade species exhibited more shade tolerance than the prairie species: they had lower maximum A, saturation of A, and photosystem I electron transport with respect to PPFD, higher quantum yields that increased with decreasing growth PPFD, and increasing chl concentrations with decreasing PPFD.
    Description
    This is the publisher's official version, also available electronically from: http://www.jstor.org/stable/2995345
    URI
    http://hdl.handle.net/1808/9873
    Collections
    • Ecology & Evolutionary Biology Scholarly Works [1516]
    Citation
    Smith, M. and C.E. Martin. 1987. Photosynthetic responses to PPFD in three forest understory species of the C4 grass genus Muhlenbergia. Bot. Gaz. 148: 275-282.

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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