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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical and applied genetics 70 (1985), S. 123-127 
    ISSN: 1432-2242
    Keywords: Selection ; Maternal effects ; Overlapping generations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Prediction of response to selection for traits with direct and maternal components is described for discrete and overlapping generations. Expected phenotypic response is the sum of direct and maternal contributions, the latter having a genetic and an environmental component. With overlapping generations the selection differentials achieved on these components are added to respective updated vectors containing age-sex distributions with values of previous selection rounds. An example demonstrates that in the early stages, results may be considerably affected by environmental correlations between direct and maternal effects. The method could be helpful in interpreting phenotypic changes in a population selected for traits with maternal effects.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical and applied genetics 53 (1978), S. 17-24 
    ISSN: 1432-2242
    Keywords: Nucleus ; Genetic ; Breeding ; Overlapping generations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Explicit methods are derived for estimating steady-state genetic responses and genetic differences between nucleus and base progeny crops in open nucleus breeding schemes which utilize genetic differences between progeny groups with parents of different ages or between age groups. Explicit methods are also given for estimating proportions which should be selected from the different nucleus and base selection groups so as to maximise genetic responses under each of a range of selection methods. Some basic differences between selection programmes utilizing genetic differences between progeny groups with parents of different ages and those utilizing genetic differences between age groups in nucleus breeding schemes are summarized.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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