Seed quality shifts and managing plant genetic resources in fragmented landscapes

M.F. Breed, K.M. Ottewell, M.G. Gardner, A.J. Lowe

    Research output: Contribution to conferenceAbstractpeer-review


    Trees promote long distance gene flow leading to the 'paradox of forest fragmentation genetics' - their populations are generally buffered against random genetic drift effects of habitat fragmentation commonly shown by other organisms. However, within fragmented landscapes, reduced stand density and changed plant-pollinator interactions are often observed to change individual plant mating patterns (e.g. outcrossing rates, pollen diversity). These mating patterns drive immediate gains or losses of genetic effect of negatively impacting the mating patterns of animal-pollinated trees and shrubs. With a case study of Australian mallee eucalypts, I use paternity analysis using microsatellites of open-pollinated progeny arrays to investigate how these mating patterns are a function of (1) stand density and (2) pollinator mobility. I then explore with case studies from the Australian mallee and the Neotropics how these mating patterns can directly impact on offspring fitness. The findings of this work have applications to management of plant genetic resources. I focus on the implications of these findings for the use of plant genetic resources in revegetation.
    Original languageEnglish
    Number of pages1
    Publication statusPublished - 2012
    EventPlant Science for Future Needs - Uppsala, Sweden
    Duration: 11 Oct 201212 Oct 2012


    ConferencePlant Science for Future Needs
    OtherThe conference aims to tackle upcoming challenges like climate change and food security by setting a foundation for future collaborations between different sub-disciplines of plant science. Eight scientific sessions with plenary presentations, short talks and posters will highlight prevailing directions and novel findings.


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