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  • 1
    Electronic Resource
    Electronic Resource
    Chromosome number of theOxalis tuberosa alliance (Oxalidaceae) (1990)
    Springer
    Plant systematics and evolution 169 (1990), S. 25-29 
    Details
    ISSN: 1615-6110
    Keywords: Angiosperms ; Oxalidaceae ; Oxalis tuberosa alliance ; Chromosome numbers ; karyotype analyses ; cytotaxonomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Twelve taxa of theOxalis tuberosa alliance were analysed and found to share the same basic chromosome number x = 8. The karyotypes are composed by small metacentric and submetacentric chromosomes. Different ploidy levels were found among the taxa: there were 9 diploids, 1 tetraploid, 1 hexaploid and 1 octoploid. The last ploidy level corresponds toO. tuberosa, the only tuber bearing taxon found so far in the alliance. Cytotaxonomic evidence and evolutionary considerations suggest to classify theO. tuberosa alliance in sect.Herrerea.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00935981
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The chromosome complements of shrubbyOxalis species from South America (1983)
    Springer
    Plant systematics and evolution 141 (1983), S. 187-197 
    Details
    ISSN: 1615-6110
    Keywords: Oxalidaceae ; Oxalis sect ; Thamnoxys ; Chromosome numbers ; karyotype analyses ; variation ; geographical distribution ; Flora of South America
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Twenty species of shrubbyOxalis species native in South America were arranged in six groups according to their karyotype similarities. The first group includes more than half of the species studied, all with 2n = 12 relatively small metacentric chromosomes. The rest of the species from the other groups has different basic chromosome numbers, and exhibits various degrees of chromosome asymmetry and size increase. These latter groups apparently have specialized to habitats with low light intensity such as the forest undergrowth in contrast to the frist group whose members live in open areas (i.e., grasslands, savannas etc.).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00989001
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    Paper (German National Licenses)
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