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  • 1995-1999  (2)
  • Citrus L.  (1)
  • PACS. 42.50.Lc Quantum fluctuations, quantum noise, and quantum jumps - 42.50.Ar Photon statistics and coherence theory - 42.50.Dv Nonclassical field states; squeezed, antibunched, and sub-Poissonian states; operational definitions of the phase of the field; phase measurements  (1)
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  • 1995-1999  (2)
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    A localized linkage map of the citrus tristeza virus resistance gene region (1996)
    Springer
    Theoretical and applied genetics 92 (1996), S. 688-695 
    Details
    ISSN: 1432-2242
    Keywords: Citrus L. ; Poncirus trifoliate L. ; Random amplified polymorphic DNA ; Bulked segregant analysis ; Genome mapping
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A localized genetic linkage map was developed of the region surrounding the citrus tristeza virus (CTV) resistance gene (designated Ctv) from Poncirus trifoliate L., a sexually compatible Citrus relative. Bulked segregant analysis (BSA) was used to identify potential resistance-associated RAPD fragment markers in four intergeneric backcross families that were segregating for CTV resistance. Eight RAPD fragments were found that were consistently linked to Ctv in the four families. Map distances and locus order were determined with MAPMAKER 3.0, using the results obtained from 59 individuals in the largest family. Also, a consensus map was constructed with JOINMAP 1.3, using pooled results from the four backcross families. Marker orders were identical, except for 1 marker, on these independently developed maps. Family-specific resistance-associated markers were also identified, as were numerous susceptibility-associated markers. The identification of markers tightly linked to Ctv will enable citrus breeders to identify plants likely to be CTV-resistant by indirect, marker-assisted selection, rather than by labor-intensive direct challenge with the pathogen. These markers also provide a basis for future efforts to isolate Ctv for subsequent genetic manipulation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00226090
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Squeezed two-mode lasers without and with inversion (1999)
    Springer
    The European physical journal 5 (1999), S. 291-299 
    Details
    ISSN: 1434-6079
    Keywords: PACS. 42.50.Lc Quantum fluctuations, quantum noise, and quantum jumps - 42.50.Ar Photon statistics and coherence theory - 42.50.Dv Nonclassical field states; squeezed, antibunched, and sub-Poissonian states; operational definitions of the phase of the field; phase measurements
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: On the basis of the nondegenerate quantum-beat laser model, we introduce a coherent field which drives the transition between the upper lasing level and an auxiliary level. We demonstrate that such a four-level system can produce squeezed two-mode laser without and with inversion. When the laser is operated well above threshold, the intensity fluctuation in the average mode is reduced below the shot noise with an optimum Mandel parameter Q=- 1/2. At the same time, the noises in the relative amplitude and the relative phase drop to their vaccum noise levels. Furthermore, regardless of inversion, noninversion, and transition between inversion and noninversion, the optimum Mandel Q parameter of Q=- 1/2 is retained when the system operates well above threshold. A simple physical explanation of the squeezing mechanism for two-mode squeezing is given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100530050258
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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