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    • Journal of Range Management, Volume 43 (1990)
    • Journal of Range Management, Volume 43, Number 3 (May 1990)
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    Variability for seed size and yield in two tall dropseed populations

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    Author
    Boe, A.
    Issue Date
    1990-05-01
    Keywords
    population genetics
    Sporobolus asper
    size
    seed production
    Sporobolus
    genetic variation
    seeds
    South Dakota
    quality
    
    Metadata
    Show full item record
    Citation
    Boe, A. (1990). Variability for seed size and yield in two tall dropseed populations. Journal of Range Management, 43(3), 195-197.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/644956
    DOI
    10.2307/3898670
    Additional Links
    https://rangelands.org/
    Abstract
    Tall dropseed [Sporobolus asper (Michx.) Kunth var. asper] is a drought-tolerant, perennial, warm-season grass that has potential for forage and soil conservation purposes. A prairie and an adjacent roadside population from northeastern South Dakota were evaluated for seed yield and size characteristics for 3 years (1985-1987) in a space-plant nursery at Brookings, S. Dak. The objective was to obtain information on between and within population variability and intraplant variability that would provide a basis for designing a breeding program to improve seed production and quality in this germplasm. The roadside population produced significantly (P<0.01) higher seed yields and larger mean 100-seed weight than the prairie population. Percent small seed (based on screen-separation of seed yields of individual plants into small, medium, and large seed size classes) decreased significantly (P<0.01) as seed yield increased, but the volume of small seed increased concurrently with seed yield. Percent large seed increased significantly (P<0.01) with increased seed yield and mean seed size. Highly significant (P<0.01) differences were found among years for seed yield and mean seed size, but all plants produced seeds of each size class each year. Inter- and intrapopulation genetic variability was indicated for yield of the large seed size class. Screen-separation of individual plant seed yields could be used to identify superior genotypes to be used in the development of a cultivrr that produces a high percentage of large seed.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/3898670
    Scopus Count
    Collections
    Journal of Range Management, Volume 43, Number 3 (May 1990)

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