Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Identification and mapping of random amplified polymorphic DNA (RAPD) markers linked to resistance against beet necrotic yellow vein virus (BNYVV) in Beta accessions (1997)
    Springer
    Theoretical and applied genetics 94 (1997), S. 123-130 
    Details
    ISSN: 1432-2242
    Keywords: Key words Beet necrotic yellow vein virus  ; Beta vulgaris  ;  Bulked segregant analysis  ;  RAPD markers  ;  Resistance genes  ;  STS markers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Molecular markers linked to resistance genes are useful to facilitate the introgression of one or more of these genes in breeding materials. Following the approach of bulked segregant analysis, RAPD markers linked to resistance genes against beet necrotic yellow vein virus were identified in the four Beta accessions Holly-1-4, R104, R128 and WB42. Two primers were found which generate RAPD markers tightly linked to resistance in segregating families of Holly-1-4, R104 and R128, indicating that the resistance genes in these accessions might be situated at the same locus. Other, specific, primers were identified which generate RAPD markers linked to resistance in each of these accessions. Short-range maps were established around the resistance locus in these accessions. For WB42, RAPD markers were only identified at a relatively large distance from the resistance gene. Conversion of three RAPD primers of Holly-1-4, R104 and R128 into STS primers resulted in STS markers which can be readily used for marker-assisted selection in breeding programmes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220050390
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Inheritance of resistance to beet necrotic yellow vein virus in Beta vulgaris conferred by a second gene for resistance (1999)
    Springer
    Theoretical and applied genetics 99 (1999), S. 740-746 
    Details
    ISSN: 1432-2242
    Keywords: Key words Beet necrotic yellow vein virus ; Beta vulgaris ; Inheritance ; Resistance genes ; Rhizomania ; STS markers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract   Rhizomania is a serious disease of sugar beet, caused by beet necrotic yellow vein virus (BNYVV). The disease can only be controlled by the use of resistant cultivars. The accession Holly contains a single dominant gene for resistance, called Rz. The identification of a locus for resistance that differs from Rz would provide possibilities to produce cultivars with multiple resistance to BNYVV. Inheritance of resistance to BNYVV was studied by screening progenies of crosses between resistant plants of the accessions Beta vulgaris subsp. maritima WB42 and B. vulgaris subsp. vulgaris Holly-1–4 or R104. Observed and expected segregation ratios were compared to elucidate whether the resistance genes in the three accessions are alleles or situated on different loci. STS markers, linked to the genes for resistance, were used to study the segregation in more detail. The results demonstrated that the genes for resistance to BNYVV inHolly-1-4 and WB42 are closely linked. The gene for resistance in R104 is at the same locus as in Holly-1-4, and also closely linked to the gene in WB42. As the Holly resistance gene has been named Rz, the name Rz2 is proposed to refer to the resistance gene in WB42. Consequently, the gene Rz should be referred to as Rz1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220051292
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Proton-Proton Virtual Bremsstrahlung in a Relativistic Covariant Model (1999)
    Springer
    Few body systems 26 (1999), S. 197-211 
    Details
    ISSN: 1432-5411
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract.  Lepton-pair production (virtual bremsstrahlung) in proton-proton scattering is investigated using a relativistic covariant model. The effects of negative-energy states and two-body currents are studied. These are shown to have large effects in some particular structure functions, even at the relatively small energy of a recent experiment at KVI (190 MeV).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s006010050114
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Q 2-Dependence of the Drell-Hearn-Gerasimov integral (1999)
    Springer
    The European physical journal 6 (1999), S. 211-214 
    Details
    ISSN: 1434-601X
    Keywords: PACS: 13.40.-f Electromagnetic processes and properties – 13.60.Hb Total and inclusive cross sections (including deep-inelastic processes) – 13.60.Le Meson production – 25.20.Lj Photoproduction reactions – 25.30.-c Lepton-induced reactions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: The energy and four-momentum (Q 2) dependence of the photo-absorption cross section on the proton is calculated for helicity −1/2 and −3/2 states. An effective Lagrangian model is used, formulated in terms of meson and baryon degrees of freedom, which obeys crossing symmetry, unitarity, Lorentz and gauge invariance. The difference in the cross sections for the two helicity states, the Drell-Hearn-Gerasimov integral I DHG(Q 2), is evaluated at different Q 2. We find that at small momentum transfer the absolute value of I DHG(Q 2) first increases to reach a maximum at Q 2≈ 0.05 GeV2 before decreasing at higher Q 2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100500050336
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...