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  • 1995-1999  (3)
  • Linkage map  (2)
  • Conifers  (1)
  • V. streptophylla
  • 1
    Electronic Resource
    Electronic Resource
    Markers for selection of the rice Xa21 disease resistance gene (1996)
    Springer
    Theoretical and applied genetics 93 (1996), S. 1119-1122 
    Details
    ISSN: 1432-2242
    Keywords: Rice ; Xa2 ; Disease resistance ; Linkage map ; Physical map
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Six molecular markers were mapped to a 7.4-cM region of rice chromosome 11 containing the Xa21 gene, which confers resistance to the pathogen Xanthomonas oryzae pv oryzae. Three markers, RG103, 248 and 818, co-segregated with Xa21 in a population of 1141 plants. Multiple copies of all marker loci were present within the region that was introgressed from Oryza longistaminata into O. sativa. The marker loci were cloned and primers were designed that defined sequence-tagged sites. Physical mapping of the three tightly linked central markers revealed that RG103, the marker that hybridizes to the Xa21 gene, resides on a separate DNA fragment from the other two markers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00230134
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Markers for selection of the rice Xa21 disease resistance gene (1996)
    Springer
    Theoretical and applied genetics 93 (1996), S. 1119-1122 
    Details
    ISSN: 1432-2242
    Keywords: Key words Rice ; Xa21 ; Disease resistance ; Linkage map ; Physical map
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Six molecular markers were mapped to a 7.4-cM region of rice chromosome 11 containing the Xa21 gene, which confers resistance to the pathogen Xanthomonas oryzae pv oryzae. Three markers, RG103, 248 and 818, co-segregated with Xa21 in a population of 1141 plants. Multiple copies of all marker loci were present within the region that was introgressed from Oryza longistaminata into O. sativa. The marker loci were cloned and primers were designed that defined sequence-tagged sites. Physical mapping of the three tightly linked central markers revealed that RG103, the marker that hybridizes to the Xa21 gene, resides on a separate DNA fragment from the other two markers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220050344
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Multiple-population versus hierarchical conifer breeding programs: a comparison of genetic diversity levels (1995)
    Springer
    Theoretical and applied genetics 90 (1995), S. 584-594 
    Details
    ISSN: 1432-2242
    Keywords: Multiple-population breeding (MPBS) Hierarchical open-ended breeding (HOPE) Genetic conservation ; Conifers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Advanced-generation domestication programs for forest-tree species has raised some concerns about the maintenance of genetic diversity in forest-tree breeding programs. Genetic diversity in natural stands was compared with two genetic conservation options for a third-generation elite Pinus taeda breeding population. The breeding population was subdivided either on the basis of geographic origin and selection goals (multiple-population or MPBS option) or stratified according to genetic value (hierarchical or HOPE option). Most allelic diversity in the natural stands of loblolly pine is present in the domesticated breeding populations. This was true at the aggregate level for both multiple-population (MPBS) and the hierarchical (HOPE) populations. Individual subpopulations within each option had less genetic diversity but it did not decline as generations of improvement increased. Genetic differentiation within the subdivided breeding populations ranged from 1 to 5%, genetic variability is within each subpopulation rather than among subpopulations for both MPBS (〉95%) and the HOPE approaches (〉98%). Nei's Gst estimates for amongpopulation differentiation were biased upwards relative to estimates of θ from Weir and Cockerham (1984).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00222007
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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