AFLP analysis of genetic diversity in leafy kale (Brassica oleracea L. convar. acephala (DC.) Alef.) landraces, cultivars and wild populations in Europe

Stina Christensen, Roland von Bothmer, G. Poulsen, L. Maggioni, M. Phillip, Bente Anni Andersen, Rikke Bagger Jørgensen

    Research output: Contribution to journalJournal articlepeer-review

    Abstract

    AFLP markers were used to characterize diversity and asses the genetic structure among 17 accessions of kale landraces, cultivars and wild populations from Europe. The range of average gene diversity in accessions was 0.11–0.27. Several landraces showed higher levels of diversity than the wild populations and one cultivar had the lowest diversity measures. The landraces that were most genetically diverse were from areas where kales are known to be extensively grown, suggesting in situ conservation in these areas as a supplement to storage of seeds in gene banks. An analysis of molecular variance (AMOVA) showed that 62% of the total variation was found within accessions. For most accessions, genetic distance was not related to geographic distance. Similarities among accessions were probably not caused by recent gene flow since they were widely separated geographically; more likely the relationship among them is due to seed dispersal through human interactions. Our results indicate that a kale population found in a natural habitat in Denmark was probably not truly wild but most likely an escape from a cultivated Danish kale that had subsequently become naturalized.
    Original languageEnglish
    JournalGenetic Resources and Crop Evolution
    Volume58
    Issue number5
    Pages (from-to)657-666
    ISSN0925-9864
    DOIs
    Publication statusPublished - 2011

    Keywords

    • Bio systems
    • Environment and climate

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