• Login
    View Item 
    •   Home
    • Journals and Magazines
    • Society for Range Management Journal Archives
    • Rangeland Ecology & Management / Journal of Range Management
    • Journal of Range Management, Volume 52 (1999)
    • Journal of Range Management, Volume 52, Number 6 (November 1999)
    • View Item
    •   Home
    • Journals and Magazines
    • Society for Range Management Journal Archives
    • Rangeland Ecology & Management / Journal of Range Management
    • Journal of Range Management, Volume 52 (1999)
    • Journal of Range Management, Volume 52, Number 6 (November 1999)
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of UA Campus RepositoryCommunitiesTitleAuthorsIssue DateSubmit DateSubjectsPublisherJournalThis CollectionTitleAuthorsIssue DateSubmit DateSubjectsPublisherJournal

    My Account

    LoginRegister

    About

    AboutUA Faculty PublicationsUA DissertationsUA Master's ThesesUA Honors ThesesUA PressUA YearbooksUA CatalogsUA Libraries

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Intrapopulation genetic variation for seed dormancy in India ricegrass

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    9469-9350-1-PB.pdf
    Size:
    4.928Mb
    Format:
    PDF
    Download
    Author
    Jones, T. A.
    Nielson, D. C.
    Issue Date
    1999-11-01
    Keywords
    seed morphology
    thickness
    line differences
    lemma
    palea
    seed size
    Achnatherum hymenoides
    selection criteria
    cultivars
    seed germination
    seed dormancy
    Show allShow less
    
    Metadata
    Show full item record
    Citation
    Jones, T. A., & Nielson, D. C. (1999). Intrapopulation genetic variation for seed dormancy in Indian ricegrass. Journal of Range Management, 52(6), 646-650.
    Publisher
    Society for Range Management
    Journal
    Journal of Range Management
    URI
    http://hdl.handle.net/10150/643967
    DOI
    10.2307/4003636
    Additional Links
    https://rangelands.org/
    Abstract
    Indian ricegrass (Achnatherum hymenoides [Roem. &Schult.] Barkw. = Oryzopsis hymenoides [Roem. & Schult.] Ricker = Stipa hymenoides Roem. &Schult.) may buffer its seed banks over time via morphological (lemma and palea) and physiological (seed coat) seed dormancy. However, Indian ricegrass seed dormancy has usually not been examined from a genetic perspective. Because a positive relationship between seed dormancy and seed size has long been noted within Indian ricegrass populations we wanted to determine if genetic variation for seed dormancy was present among seed morphs. We also wanted to determine if genetic variation for seed dormancy was present in material without polymorphism. The T-593 population from McKinley Co., N.M., has 3 seed morphs produced on genetically distinct plants, 'elongate' (2.24 mg/seed), 'globose' (3.00 mg/seed), and 'jumbo' (8.70 mg/seed). Following a 3-week prechill, elongate seed showed higher germination (66%) than globose seed (20%) over 6 tests (pairs of seed lots), while jumbo seed did not germinate without scarification. Jumbo seed had thicker (181 microgram) lemmas than globose (93 microgram) or elongate (52 microgram) seed. Individual plants of the nonpolymorphic cultivar, Rimrock, were selected for high or low germination following a 3-week prechill. The spring following seed harvest, germination with prechill was greater for progeny lines of the high-germination selections (45.5%) than low-germination selections (3.8%) with Rimrock intermediate (11.8%). This heritable difference in germination was accompanied by only small differences in lemma and palea thickness and no difference in seed mass. Genetic variation in seed dormancy may be found both between morphs (interpreted as variation for morphological dormancy) and within morphs (interpreted as variation for physiological dormancy). Genetic variation for seed dormancy can be as great within a population as between populations.
    Type
    text
    Article
    Language
    en
    ISSN
    0022-409X
    ae974a485f413a2113503eed53cd6c53
    10.2307/4003636
    Scopus Count
    Collections
    Journal of Range Management, Volume 52, Number 6 (November 1999)

    entitlement

     
    The University of Arizona Libraries | 1510 E. University Blvd. | Tucson, AZ 85721-0055
    Tel 520-621-6442 | repository@u.library.arizona.edu
    DSpace software copyright © 2002-2017  DuraSpace
    Quick Guide | Contact Us | Send Feedback
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.