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  • 1
    Electronic Resource
    Electronic Resource
    Cytogenetics of Lolium perenne (1983)
    Springer
    Theoretical and applied genetics 65 (1983), S. 149-156 
    Details
    ISSN: 1432-2242
    Keywords: Lolium perenne ; Meiosis ; Chiasma distribution ; U-type exchange
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary In two contrasting types of S5 inbred Lolium perenne a correlation has been found between the distribution pattern of chiasmata within bivalents and that of meiotic U-type exchange. The relationship between the two processes is discussed, in terms of inbreeding effects upon chiasma redistribution, and mention is also made of some other types of chromosome breakages which arise following enforced self-pollination.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00264883
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Cytogenetics of Lolium perenne (1983)
    Springer
    Theoretical and applied genetics 64 (1983), S. 137-145 
    Details
    ISSN: 1432-2242
    Keywords: Lolium perenne ; Inbred lines ; Meiosis ; Chiasma distribution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary An analysis of the patterns of chiasma distribution within bivalents, in a number of inbred lines of Lolium perenne, reveals a striking potential for variation in this character, as well as a polygenic genetic basis for its control. In parent plants the chiasmata have a regular pattern of localisation which restricts their formation to the ends of the chromosome arms: this strict localisation is progressively lost with inbreeding and novel patterns of distribution are found where chiasmata occur in more interstitial and proximal regions. The variation is continuous and originates from genotypic differences between the different parent plants, rather than from segregation among families deriving from individual parents.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00272721
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Improvement of tomato flavor by genetically increasing sugar and acid contents (1983)
    Springer
    Euphytica 32 (1983), S. 845-855 
    Details
    ISSN: 1573-5060
    Keywords: Lycopersicon esculentum ; tomato ; flavor ; sensory evaluation ; soluble solids
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Advanced high sugar and acid breeding lines of tomatoes (Lycopersion esculentum Mill.) were rated higher in sweetness, sourness and overall flavor intensity than the standard cultivars Cal Ace or T3. Titratable acidity and soluble solids content were major contributors to differences in overall flavor intensity. The results demonstrate that significant improvement in tomato flavor can be attained by increasing sugar and acid contents in tomato fruits by genetic manipulation. Current evidence indicates that breeding for high soluble solids in horticulturally acceptable tomato cultivars is justified.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00042166
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Low temperature seed germination of Lycopersicon species evaluated by survival analysis (1982)
    Springer
    Euphytica 31 (1982), S. 869-883 
    Details
    ISSN: 1573-5060
    Keywords: Lycopersicon ; tomato ; low temperature germination ; survival analysis ; high altitude ecotypes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Low temperature germination responses were evaluated for 18 high altitude accessions representing five wild Lycopersicon species and 19 accessions of L. esculentum which have reputed ability to germinate in the cold. Survival analysis indicated that one accession of L. chilense germinates better at 10°C than PI 120256, the fastest-germinating L. esculentum genotype, and that PI 120256 germinates as well as PI 126435 (L. peruvianum). Additional wild ecotypes exhibiting rapid germination at 10°C were identified from L. peruvianum and L. hirsutum. These ecotypes may possess genetic potential for introgressing cold germination ability into L. esculentum cultivars.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00039227
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    Paper (German National Licenses)
    Fulltext
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