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  • Springer  (2)
  • Norwegian Meteorological Institute  (1)
  • 1
    Electronic Resource
    Electronic Resource
    The relationships of hardening period and the expression of frost resistance in chromosome substitution lines of wheat (1989)
    Springer
    Euphytica 43 (1989), S. 41-45 
    Details
    ISSN: 1573-5060
    Keywords: Triticum aestivum ; wheat ; chromosome substitution ; frost resistance ; hardening
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The highly frost resistant wheat variety Cheyenne (donor) and the poorly frost resistant variety Chinese Spring (recipient) were frozen at −9° C and −11° C at various stages of hardening, as were a number of substitution lines of these two varieties (CS/Ch 3A, CS/Ch 5A, CS/Ch 7A, CS/Ch 2B, CS/Ch 4B, CS/Ch 5B, CS/Ch 4D, CS/Ch 5D). Chromosomes 5A, 5B, 5D, 4B and 7A of Cheyenne increased the frost resistance of the recipient variety to varying extents. However, the frost resistance changed not only as a function of the different chromosomes, but also as a function of the duration of hardening, indicating that genes responsible for frost resistance are expressed differently during different phases of the hardening process.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00037894
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Characterization of morphological variation and cold resistance in interspecific somatic hybrids between potato (Solanum tuberosum L.) and S. brevidens Phil. (1991)
    Springer
    Euphytica 57 (1991), S. 37-49 
    Details
    ISSN: 1573-5060
    Keywords: aneuploidy ; cold resistance ; interspecific somatic hybridization ; morphological characterization ; multivariate analysis ; Solanum tuberosum ; Solanum brevidens
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Somatic hybrids between Solanum tuberosum L. cv. Gracia (2n=4x=48) and Solanum brevidens Phil. (2n=2x=24) were produced via fusion of mesophyll protoplasts. Selection of the protoplast derived putative hybrid calli was based on their vigorous growth. Additive isozyme patterns and chromosome numbers as well as the expression of parental morphological characters have proved the hybrid origin of the selected regenerants. Extensive chromosome loss during the regeneration process resulted in aneuploid hybrids with high frequency. Genomic instability could not be detected in these plants during the period of vegetative propagation. Regenerants from hybrid tissues exhibited wide morphological variation especially in tuber formation. The detailed morphological analysis based on the use of multivariate method (principal component analysis, PCA) enabled to identify morphological groups among the hybrid clones. The positioning of hybrid clones in the PCA space could not be correlated with chromosome numbers. The genomic ratio represented by the tetraploid and diploid parents influenced the morphology of somatic hybrid population according to the applied analytical system. Two selected hybrid clones have exhibited an intermediate degree of frost tolerance compared to the parents, based on the recovery of plants from lower buds after freezing of potted plants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00040476
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    Paper (German National Licenses)
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  • 3
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    Extreme Weather Events in Europe (2013)
    Norwegian Meteorological Institute
    In:  Extreme Weather Events in Europe
    Details
    Publication Date: 2022-03-21
    Type: info:eu-repo/semantics/report
    Format: application/pdf
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