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  • Articles: DFG German National Licenses  (3)
  • 2000-2004  (3)
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  • Articles: DFG German National Licenses  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    Use of diploid self incompatible rose genotypes as a tool for gene flow analyses in roses (2003)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 122 (2003), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A diploid rose genotype previously found to be self incompatible in greenhouse pollination experiments was analyzed in order to investigate the capacity to self fertilize under field conditions. A subset of 36 plants from open pollinations were analyzed by means of AFLP markers. All plants were found to be the result of outcrossing events, thereby demonstrating the utility of these kinds of rose genotypes as effective pollen sinks for future gene flow analyses under field conditions. Furthermore, it was demonstrated that isolation distances of 250 m from large rose plantations are insufficient to prevent gene flow between populations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0523.2003.00857.x
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Sports and seedlings of rose varieties analysed with molecular markers (2000)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 119 (2000), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Sports from two cut rose varieties, as well as a garden rose variety, were analysed with molecular markers. Between 695 and 752 random amplified polymorphic DNA and AFLP fragments were used to infer genetic differences between the sports, the original variety and seedlings of these varieties. Whereas no polymorphisms between the sports of the cut rose varieties and the original variety were observed, five polymorphisms could be detected between the garden rose variety and its sports. In contrast, a large number of polymorphisms occurred between all varieties and their seedlings. Therefore molecular markers can be used to verify the origin of vegetatively propagated rose plants of doubtful origin, thus enabling breeders in the future to claim plant breeders rights on sports of varieties already registered.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0523.2000.00459.x
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Identification of molecular markers linked to Rdr1, a gene conferring resistance to blackspot in roses (2000)
    Springer
    Theoretical and applied genetics 101 (2000), S. 977-983 
    Details
    ISSN: 1432-2242
    Keywords: Key words Blackspot ; Diplocarpon ; Molecular marker ; Resistance gene ; Rosa
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  Blackspot resistance in the tetraploid rose genotype 91/100–5 had been characterised previously as a single dominant gene in duplex configuration. In the present study a tetraploid progeny (95/3) segregating for the presence of the blackspot resistance gene Rdr1 were screened with 868 RAPD and 114 AFLP primers/primer combinations. Seven AFLP markers were found to be linked to Rdr1 at distances between 1.1 and 7.6 cM. The most closely linked AFLP marker was cloned and converted into a SCAR marker that could be screened in a larger population than the original AFLP and was linked at a distance of 0.76 cM. The cloned fragment was used as an RFLP probe to locate the marker on a chromosome map of diploid roses. This is the first report of markers linked to a resistance gene in roses, and the possibilities of using them for a marker-assisted selection for blackspot resistance as well as for map-based cloning approaches are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220051570
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    Paper (German National Licenses)
    Fulltext
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