Unique genomic configuration revealed by microsatellite DNA in polyploid dogroses, Rosa sect.Caninae.

H. Nybom, G.D. Esselink, G. Werlemarkt, I.E. Leus, B.J. Vosman

    Research output: Contribution to journalArticleAcademicpeer-review

    53 Citations (Scopus)


    An allopolyploid complex with high genomic integrity has been studied. Dogroses transmit only seven chromosomes (from seven bivalents) through the pollen, whereas 21, 28 or 35 chromosomes (from seven bivalents and 14, 21 or 28 univalents) come from the egg cells. Seedlings derived from two interspecific crosses were analysed with flow cytometry and molecular markers to determine ploidy level, mode of reproduction and genomic constitution. Evidence was obtained for the formation of unreduced male and female gametes, which can take part in fertilization (producing seedlings with higher ploidy than the parental plants) or in apomictic reproduction. Random amplified polymorphic DNA (RAPD) and microsatellite analyses indicated that three seedlings (5%) were derived through apomixis, whereas the other 49 were hybrids. Bivalent formation appears to involve chromosomes that consistently share the same microsatellite alleles. Allele-sharing between the maternally transmitted and highly conserved univalent-forming chromosomes reflected the taxonomic distance between different genotypes. The frequently recombining bivalent-forming chromosomes were taxonomically less informative
    Original languageEnglish
    Pages (from-to)635-648
    JournalJournal of Evolutionary Biology
    Issue number2
    Publication statusPublished - 2006


    • skewed distribution
    • molecular markers
    • origin
    • evolution
    • l.
    • inheritance
    • apomixis
    • behavior
    • complex
    • crosses

    Fingerprint Dive into the research topics of 'Unique genomic configuration revealed by microsatellite DNA in polyploid dogroses, Rosa sect.Caninae.'. Together they form a unique fingerprint.

    Cite this