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    Author(s): Karol Marhold
    Date: 2006
    Source: Taxon. 55(2): 443-445.
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (155 B)

    Description

    The new series, IAPT/IOPB Chromosome Data, presented here, is a continuation of the long-term activity of the International Organisation of Plant Biosystematists (now interest group of the International Association for Plant Taxonomy) in supporting the research and publication of data on chromosome numbers and ploidy levels. Polyploidy is a frequent phenomenon in plant evolution that produces fast and substantial changes in the genetic composition of the organisms, which seem to foster diversification. It is now widely acknowledged that most plants have undergone one or more episodes of polyploidization during their evolutionary history and thus its importance cannot be overestimated. With the rapid development of methods of molecular systematics, the knowledge of the ploidy level of the studied plant material acquires a new dimension as compared to the early days of publication of the IOPB Chromosome Number Reports in TAXON. In the 60s, 70s and 80s, chromosome numbers were used as an independent source of taxonomic (and phylogenetic) information while the last decade demands ploidy information to correctly interpret molecular data, particularly from ribosomal and lowcopy nuclear genes and from fingerprinting markers. Our intention is not only to publish available data on chromosome numbers and ploidy levels of vascular plants, which otherwise might remain unpublished, but also to encourage further research in this respect.

    Publication Notes

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    Citation

    Marhold, Karol. 2006. IAPT/IOPB chromosome data 1. Taxon. 55(2): 443-445.

    Keywords

    IAPT/IOPB Chromosome Data, polyploidy

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