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  • Triticum aestivum  (5)
  • Springer  (5)
  • 1980-1984  (5)
  • 1955-1959
  • 1981  (5)
Collection
Keywords
Publisher
  • Springer  (5)
Years
  • 1980-1984  (5)
  • 1955-1959
Year
  • 1
    Electronic Resource
    Electronic Resource
    An evaluation of mitochondrial heterosis and in vitro mitochondrial complementation in wheat, barley and maize (1981)
    Springer
    Theoretical and applied genetics 59 (1981), S. 153-160 
    Details
    ISSN: 1432-2242
    Keywords: Mitochondrial heterosis ; Mitochondrial complementation ; Triticum aestivum ; Hordeum vulgare ; Zea mays
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Two families each of wheat (Triticum aestivum L.), barley (Hordeum vulgare L.) and maize (Zea mays L.) were studied for mitochondrial heterosis and in vitro mitochondrial complementation. Inbred parents and their hybrids were compared for seedling heights and rate of oxygen uptake by the whole tissue to find out if the hybrids showed greater growth and respiratory activity at the seedling stage. Further comparisons were made by isolating mitochondria from the seedling tissues and measuring their ADP∶0 ratio, respiratory control ratio and cytochrome c oxidase activity for mitochondrial heterosis. Mixtures of parental mitochondria were similarly compared with parental and hybrid mitochondria for in vitro mitochondrial complementation. No evidence for mitochondrial heterosis or in vitro mitochondrial complementation was found, nor any correlation between the different mitochondrial parameters, seedling heights or rates of oxygen uptake by seedling tissue. The suggested use of mitochondrial heterosis and in vitro mitochondrial complementation for plant breeding is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00264969
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  • 2
    Electronic Resource
    Electronic Resource
    Monosomic analysis of genes for resistance against stem rust races in bread wheat (1981)
    Springer
    Theoretical and applied genetics 59 (1981), S. 313-316 
    Details
    ISSN: 1432-2242
    Keywords: Triticum aestivum ; Wheat ; Puccinia graminis ; Stem rust resistance ; Monosomic analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Using monosomic analysis genes governing resistance in one wheat variety, ‘E5883’, against stem rust races 15C and 122, were located on specific chromosomes. Against race 15C, a major dominant gene, Sr6, was located on chromosome 2D of ‘E5883’ with minor modifiers found on chromosomes 4A and 6D. Against race 122, the presence of a recessive hemizygous ineffective gene, Sr8, was identified, located on chromosome 6A of variety ‘E5883’.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00264984
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  • 3
    Electronic Resource
    Electronic Resource
    Some comments on two recent papers in euphytica concerning stem rust resistance in wheat (1981)
    Springer
    Euphytica 30 (1981), S. 589-591 
    Details
    ISSN: 1573-5060
    Keywords: Triticum aestivum ; bread wheat ; Puccinia graminis tritici ; stem rust ; genetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00038784
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  • 4
    Electronic Resource
    Electronic Resource
    A least-squares method for choosing the best relative proportions when intercrossing cultivars (1981)
    Springer
    Euphytica 30 (1981), S. 153-160 
    Details
    ISSN: 1573-5060
    Keywords: Triticum aestivum ; spring wheat ; parent selection ; cross prediction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary It is supposed that k variables have been measured on each of m potential parents, and that the aim is to produce a base population for which the mean values are as close as possible to an ideal genotype. A least-squares estimation procedure for the parent proportions is presented and the determination of the closest practical solution is considered. It is shown that an enumeration procedure for finding the best practical solution, which is applicable in most situations, is simpler and more flexible than the least-squares method. A proposed symbolic presentation of the results of an analysis highlights the strengths and deficiencies of a set of parents and indicates which parents may complement one another.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00033672
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  • 5
    Electronic Resource
    Electronic Resource
    A classification of the NORIN 10 and Tom Thumb dwarfing genes in British, Mexican, Indian and other hexaploid bread wheat varieties (1981)
    Springer
    Euphytica 30 (1981), S. 355-361 
    Details
    ISSN: 1573-5060
    Keywords: Triticum aestivum ; bread wheat ; gibberellin insensitivity ; cultivar classification according to Rht genotype
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The two semi-dwarfing genes Rht1 and Rht2 from Norin 10 have now been incorporated in successful varieties in use in most major wheat growing areas. The more potent dwarfing gene, Rht3, from Tom Thumb has been used in a limited way. These genes may be identified and classified by assessing the associated character of GA-insensitivity in the progeny from test crosses. This paper describes these classifications in the CIMMYT, Mexican, PBI, Cambridge and Indian breeding programmes and for a number of other international varieties.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00033997
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