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  • 1990-1994  (2)
  • Chromosome segregation  (1)
  • Dam-break events  (1)
  • 1
    Electronic Resource
    Electronic Resource
    A self-fertile trigeneric hybrid,Triticum aestivum ×Agropyron michnoi ×Secale cereale (1993)
    Springer
    Theoretical and applied genetics 87 (1993), S. 361-368 
    Details
    ISSN: 1432-2242
    Keywords: Trigeneric hybrids ; Self-fertility ; Gene pool ; Chromosome segregation ; F2 and BC1 derivatives
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Trigeneric hybrids between the (Triticum aestivum ×Agropyron michnoi) F1 (CM, 2n=5x=35; ABDPP) and two winter rye (Secale cereale L., 2n=2x=14; RR) cultivars, ‘Wugong 774’ and ‘AR-132’, were synthesized. Such trigeneric hybrids could be used to transfer resistance genes for powdery mildew from rye to CM and subsequently to common wheat and to identify (1) the effects of the P genome ofAgropyron on the self-fertility of the hybrids and (2) the differences in genetic background between rye cultivars with marked differences in pollinating habit. The trigeneric hybrids varied widely in morphology and showed a high level of resistance to such diseases as barley yellow dwarf virus (BYDV), stripe rust, leaf rust, stem rust, and powdery mildew. Selfed and many backcross derivatives were obtained from the trigeneric hybrids. The results indicated that rye cvs ‘Wugong 774’ and ‘AR132’ arose from different gene pools and that the P genome ofAgropyron carries gene(s) responsible for chromosome segregation, leading to functional gamete formation and self-fertility of the hybrids. The F2 and BC1 plants could be obtained in two ways — fusion of the unreduced gametes and the assumed apomixis of unreduced female gametes in the trigeneric hybrid plant II-4 — which indicates that this trigeneric hybrid may be a special genetic stock. Chromosome pairing in the trigeneric hybrids and ways of producing wheat/rye and wheat/Agropyron translocations are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01184924
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Dam-Break flood forecasting in Piemonte region, northwest Italy (1991)
    Springer
    Water resources management 5 (1991), S. 261-270 
    Details
    ISSN: 1573-1650
    Keywords: Dam-break events ; flood damage ; Piemonte region ; Italy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: Abstract Six major reservoirs in Piemonte region, northwest Italy, have been examined in order to assess the possible flood damages to the downstream area. In this paper, some results of the hydraulic study are presented. The floods are simulated by computer models with the input data which describe the imagined dam-break events as well as other facts. Some important practical aspects of the work are extensively discussed, i.e. the problems concerning determination of the dam-breaches, the influence of the breach parameters, and estimation of the hydraulic resistance factors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00421995
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    Paper (German National Licenses)
    Fulltext
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