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  • 1
    Electronic Resource
    Electronic Resource
    Use of tissue culture to bypass wheat hybrid necrosis (1989)
    Springer
    Theoretical and applied genetics 78 (1989), S. 57-60 
    Details
    ISSN: 1432-2242
    Keywords: Hybrid necrosis ; Wheat ; Immature embryoculture ; Young ear culture
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Hybrid necrosis in wheat is a barrier to gene transfer in wheat breeding practice. It is based on two complementary genes, Ne1 and Ne2. Recovery mutants (Re1, Re2 and Re3) which can grow to maturity were recovered from immature embryo cultures of necrotic hybrids between T. aestivum and T. durum. Cytological observation demonstrated that Re1 had 34 chromosomes instead of 35. This indicated that one of the chromosomes carrying the Ne genes was lost. Genetic study suggested that for Re1, the lost chromosome was chromosome 5B of the durum parental line. Re mutants are male sterile but can be maintained through a young ear culture method. Re mutants could be successfully pollinated by either parental line and the BC1 progeny is partially fertile. Re mutants were repeatedly induced in about 1% of the regenerated plants from immature embryo culture. This technique provides a practical way to bypass hybrid necrosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00299753
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Transient flow of slightly compressible fluids through double-porosity, double-permeability systems — A state-of-the-art review (1989)
    Springer
    Transport in porous media 4 (1989), S. 147-184 
    Details
    ISSN: 1573-1634
    Keywords: Double-porosity ; double-permeability ; Barenblatt-Zheltov ; Warren-Root ; naturally fractured reservoir ; aquifer system
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Technology
    Notes: Abstract The theory of transient flow of slightly compressible fluids through naturally fractured reservoirs based on the double porosity conceptualization is summarized. The main achievements in the theory of fluid flow in leaky aquifer systems which are closely related with the double-porosity, double-permeability problems are also addressed. The main emphasis of this review is the analytical treatment of these problems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00134995
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    Paper (German National Licenses)
    Fulltext
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