EAN: 9783834807922

INVASION SUCCESS BY PLANT BREEDING - CHRISTEL A...

Christel has been intrigued by the phenomenon of invasions since her studies as an
undergraduate student in botany at Goettingen University where she took several of my courses
and where I supervised her diploma thesis. Her diploma thesis already addressed the possible
impact of hybridization for the invasiveness of plant species. By using molecular markers  she
studied North American and European Rhododendron species. We were also in close contact while
she was working on her PhD thesis at the Department of Community Ecology at the
Helmholtz-Centre for Environmental Research UFZ in Halle. Having been one of the reviewers of
her PhD thesis  I readily agreed when she asked me to write a short preface to this
publication. While the main line of research on the role of evolutionary processes for plant
invasions has mainly been on the response to a different natural selection pressures exerted by
the abiotic and biotic site factors of the new environment  Christel has asked to which degree
breeding efforts might have contributed to such pressures. She chose a very apt study object to
address this topic  Mahonia aquifolium  a species native to North America and introduced to
Europe as an ornamental plant  together with some other species of the same genus. Christel's
basic question was whether invasive populations of Mahonia aquifolium in Europe originate from
planted cultivars or from hybrids with M. repens und M. pinnata.

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