Počet záznamů: 1

Population genetic structure of the noxious weed Amaranthus retroflexus in Central Europe

  1. 1.
    0368538 - BU-J 2012 RIV DE eng J - Článek v odborném periodiku
    Mandák, Bohumil - Zákravský, Petr - Dostál, Petr - Plačková, Ivana
    Population genetic structure of the noxious weed Amaranthus retroflexus in Central Europe.
    Flora. Roč. 206, č. 8 (2011), s. 697-703 ISSN 0367-2530
    Grant CEP: GA AV ČR IAA600050707
    Výzkumný záměr: CEZ:AV0Z60050516
    Klíčová slova: allozyme * inbreeding * invasion
    Kód oboru RIV: EF - Botanika
    Impakt faktor: 1.639, rok: 2011

    Genetic variation was assessed in a range of populations of Amaranthus retroflexus using isoenzyme analysis. Population genetic diversity was measured by assessing patterns of variation at six putatively neutral isoenzyme loci within and among 20 populations of A. retroflexus collected in different habitats, i.e., in ruderal habitats, cereal fields and hop gardens. There was strong evidence of inbreeding within populations (FIS = 0.382) and significant population differentiation (FST = 0.270). Even though the species is partly autogamous, inbreeding does not lead to inbreeding depression resulting from self-pollination. Hence, inbreeding has any effect on species success in today’s countryside. Moreover, the detected genetic variability of populations from agricultural habitats (i.e., cereal fields and hop gardens) was lower in comparison to populations collected from ruderal habitats, probably due to systematic application of herbicides in agricultural ecosystems.
    Trvalý link: http://hdl.handle.net/11104/0202856