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    Function, Ecology and Evolution of Seed Size in Hakea (Proteaceae)

    241974_El-Ahmir 2016.pdf (5.229Mb)
    Access Status
    Open access
    Authors
    El-Ahmir, Sh-Hoob Mohamed
    Date
    2015
    Supervisor
    Prof. Byron Lamont
    Prof. Mark Gibberd
    Dr Tianhua He
    Type
    Thesis
    Award
    PhD
    
    Metadata
    Show full item record
    School
    Department of Environment and Agriculture
    URI
    http://hdl.handle.net/20.500.11937/2384
    Collection
    • Curtin Theses
    Abstract

    This study investigated function, ecology and evolution of variation in seed size in Hakea (Proteaceae). I first revealed that the evolution of seed size is phylogenetically constrained. Using a series of glasshouse experiments, I further demonstrated that small-seeded Hakea species gain fitness advantage in environment with dry summer through rapid germination, early seedling emergence, and early true leaves emergence; small-seeded Hakea species are also better to tolerate herbivore predation than large-seeded congeners.

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