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    • Journal of Range Management, Volume 38 (1985)
    • Journal of Range Management, Volume 38, Number 2 (March 1985)
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    Green Needlegrass and Blue Grama Seedling Growth in Controlled Environments

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    Author
    Fulbright, T. E.
    Wilson, A. M.
    Redente, E. F.
    Issue Date
    1985-09-01
    Keywords
    environmental control
    growth analysis
    Nassella viridula
    seedlings
    leaf area index
    Bouteloua gracilis
    
    Metadata
    Show full item record
    Citation
    Fulbright, T. E., Wilson, A. M., & Redente, E. F. (1985). Green needlegrass and blue grama seedling growth in controlled environments. Journal of Range Management, 38(5), 410-414.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/645505
    DOI
    10.2307/3899710
    Additional Links
    https://rangelands.org/
    Abstract
    Green needlegrass [Stipa viridula Trin.] and blue grama [Bouteloua gracilis (H.B.K.) Lag.] possess the C3 and C4 photosynthetic pathways, respectively. Objectives of this study were to compare growth analysis traits of green needlegrass and blue grama and to determine the effects of 2 temperature regimes on seedling growth characteristics of both species. Seedlings of 2 accessions each of green needlegrass and blue grama were grown in growth chambers under 20 degrees C day-15 degrees C night (20-15 degrees C) and 25 degrees C day-20 degrees C night (25-20 degrees C) temperature regimes (with a 15-hr photoperiod). Beginning 2 weeks after planting, seedlings were harvested twice a week for 3 weeks. Growth analysis traits were calculated with data obtained from each harvest using exponential regression equations. Net assimilation rates of blue grama were higher than those of green needlegrass at both temperatures. Seedling growth of blue grama was more rapid at 25-20 degrees than at 20-15 degrees C, while seedling growth of green needlegrass did not differ between temperatures. Blue grama seedlings exhibited higher relative growth rates than green needlegrass seedlings at 25-20 degrees C but not at 20-15 degrees C. Green needlegrass accessions differed for relative growth rates at 25-20 degrees C, which indicated the possibility of selecting for rapid seedling growth.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/3899710
    Scopus Count
    Collections
    Journal of Range Management, Volume 38, Number 2 (March 1985)

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