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  • Adaptation  (1)
  • Desirability index  (1)
  • Human Tom20 gene  (1)
  • 1
    Electronic Resource
    Electronic Resource
    The area under the function: an index for selecting desirable genotypes (1993)
    Springer
    Theoretical and applied genetics 87 (1993), S. 409-415 
    Details
    ISSN: 1432-2242
    Keywords: Genotype x environment interaction ; Adaptation ; Stability ; Desirability index
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The linear regression approach has been widely used for selecting high-yielding and stable genotypes targeted to several environments. The genotype mean yield and the regression coefficient of a genotype's performance on an index of environmental productivity are the two main stability parameters. Using both can often complicate the breeder's decision when comparing high-yielding, less-stable genotypes with low-yielding, stable genotypes. This study proposes to combine the mean yield and regression coefficient into a unified desirability index (D i). Thus, D i is defined as the area under the linear regression function divided by the difference between the two extreme environmental indexes. D i is equal to the mean of the i th genotype across all environments plus its slope multiplied by the mean of the environmental indexes of the two extreme environments (symmetry). Desirable genotypes are those with a large D i. For symmetric trials the desirability index depends largely on the mean yield of the genotype and for asymmetric trials the slope has an important influence on the desirability index. The use of D i was illustrated by a 20-environments maize yield trial and a 25-environments wheat yield trial. Three maize genotypes out of nine showed values of D i 's that were significantly larger than a hypothetical, stable genotype. These were considered desirable, even though two of them had slopes significantly greater than 1.0. The results obtained from ranking wheat genotypes on mean yield differ from a ranking based on D i .
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00215085
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Identification of Ψ3Tom20, a novel processed pseudogene of the human Tom20 gene, and complete characterization of Ψ1Tom20 and Ψ2Tom20 (1999)
    Springer
    Molecular genetics and genomics 262 (1999), S. 207-211 
    Details
    ISSN: 1617-4623
    Keywords: Key words Mitochondria ; Processed pseudogenes ; Human Tom20 gene ; Import receptor ; Retroposons
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract We report the identification and characterization of Ψ3Tom20, a novel processed pseudogene of the human Tom20 (hTom20) gene, which is 96.2% similarity with the hTom20 cDNA and is 5′ and 3′ truncated. In addition, we present the complete characterization of Ψ1Tom20 and Ψ2Tom20, the two other recently reported members of this pseudogene family. Comparison of the sequences of Ψ3Tom20 with that of the previously reported Ψ2Tom20 revealed and corrected an error in the previously determined sequence of Ψ2Tom20. A detailed analysis of these three pseudogenes, including their flanking regions, is presented. It suggests they probably arose from mRNAs that were polyadenylated at different sites. Possible mechanisms involved in their integration as retroposons are also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004380051076
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    Paper (German National Licenses)
    Fulltext
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