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    The Genetics of Self-Compatibility and Associated Floral Characters in Tolpis (Asteraceae) in the Canary Islands

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    The Genetics of Self-Compatibility.pdf (791.8Kb)
    Issue Date
    2013-02
    Author
    Soto-Trejo, Fabiola
    Kelly, John K.
    Archibald, Jenny K.
    Mort, Mark E.
    Santos-Guerra, Arnoldo
    Crawford, Daniel J.
    Publisher
    The University of Chicago Press
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
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    Abstract
    Members of the genus Tolpis (Asteraceae) endemic to the Canary Islands comprise a monophyletic group with the dispersal of one species to the Cape Verde Islands. Most species are self-incompatible or pseudo-self-compatible perennials. However, one species, Tolpis coronopifolia, consists of self-compatible annual plants with several floral features typical of the selfing syndrome. The evolution of self-compatibility and the selfing syndrome was studied by producing synthetic hybrids between self-incompatible/pseudo-self-compatible and self-compatible plants to determine the genetic architecture of breeding system and floral trait differences. There was a correlation between self-compatibility and selfing floral traits in the F2 generation. Self-incompatibility in Tolpis appears to be controlled by a locus of major effect but with modifier loci affecting seed set. Segregation of floral traits indicates that they are controlled by multiple loci. The high molecular similarity between plants with the two breeding systems suggests that divergence of the self-compatible T. coronopifolia from self-incompatible/pseudo-self-compatible ancestors has been recent. The association between breeding system and floral features likely results from pleiotropy or close linkage and may have facilitated the rapid evolution of the morphologically distinct self-compatible T. coronopifolia.
    Description
    This is the publisher's version, also available electronically from http://www.jstor.org/stable/10.1086/668788.
    URI
    http://hdl.handle.net/1808/13318
    DOI
    https://doi.org/10.1086/668788
    Collections
    • Center for Russian, East European, and Eurasian Studies Scholarly Publications [546]
    • Center for Teaching Excellence Scholarly Works [83]
    • Ecology & Evolutionary Biology Scholarly Works [1515]
    Citation
    The Genetics of Self-Compatibility and Associated Floral Characters in Tolpis (Asteraceae) in the Canary Islands. Fabiola Soto-Trejo, John K. Kelly, Jenny K. Archibald, Mark E. Mort, Arnoldo Santos-Guerra, and Daniel J. Crawford International Journal of Plant Sciences , Vol. 174, No. 2 (February 2013) , pp. 171-178. http://dx.doi.org/10.1086/668788

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    KU Libraries
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    785-864-8983

    KU Libraries
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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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