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  • 1
    Electronic Resource
    Electronic Resource
    INFORMATION CHANNEL DISPOSITION AND USE (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Decision sciences 18 (1987), S. 0 
    Details
    ISSN: 1540-5915
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: The use of information channels by individuals in organizations is substantially discretionary. Although much studied, variation in patterns of discretionary use has yet to be explained adequately in terms of an accepted integrative theory validated across varieties of channel types and organizational settings. In a step toward the development of such a theory, the present paper proposes a basic channel-disposition model that relates an individual's attitude or disposition toward a channel to his/her actual use of the channel in the context of information and channel supply-and-demand structures in the organization. An exploratory study of the dispositions of 186 users of ten management information system (MIS) reports in four organizational settings provides limited evidence in support of the model proposed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1540-5915.1987.tb01508.x
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  • 2
    Electronic Resource
    Electronic Resource
    Haploid transformation in Brassica napus using an octopine-producing strain of Agrobacterium tumefaciens (1989)
    Springer
    Theoretical and applied genetics 78 (1989), S. 831-835 
    Details
    ISSN: 1432-2242
    Keywords: Haploid ; Transformation ; Canola ; Octopine ; Agrobacterium tumefaciens
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Microspore-derived embryos of Brassica napus were transformed using the disarmed octopine-producing LBA4404 strain of Agrobacterium tumefaciens containing the binary vector pBin19. Octopine-producing strains have previously been reported to be ineffective in transforming Brassica. Four actively growing yellow/ green sectors were selected from the embryos on 50 mg/l kanamycin and plants regenerated. Analysis for NPT-II activity in these young plants initially indicated no expression of the bacterial NPT-II gene. The plants were nevertheless grown to maturity, selfed and S1 seed was collected. Three of the S1 plants produced microspores which were from 4 to 20 times more tolerant to kanamycin than the original parent. Southern analysis revealed that one plant (EC-1) had a single site of insertion and the other two plants (EC-2 and EC-6) had two sites of insertion with sequence homology to the bacterial NPT-II gene. Microspores from the EC-2 and EC-6 transgenics produced embryos on approximately five times the level of kanamycin tolerated by microspores from untransformed plants, while the EC-1 transgenic produced microspores with more than 20 times the tolerance to kanamycin. Analysis of S1 progeny of the EC-1 transgenic indicated that 100% of the progeny exhibited the trait through both Southern analysis and by expressing tolerance to kanamycin in microspore-derived embryos.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00266666
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  • 3
    Electronic Resource
    Electronic Resource
    Microspore mutagenesis and selection: Canola plants with field tolerance to the imidazolinones (1989)
    Springer
    Theoretical and applied genetics 78 (1989), S. 525-530 
    Details
    ISSN: 1432-2242
    Keywords: Microspores ; Haploid ; Pursuit ; Assert ; Tolerance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary In vitro microspore mutagenesis and selection was used to produce five fertile double-haploid imidazolinone-tolerant canola plants. The S2 plants of three of the mutants were resistant to at least the field-recommended levels of Assert and Pursuit. One mutant was tolerant to between five and ten times the field-recommended rates of Pursuit and Scepter. Two semi-dominant mutants, representing two unlinked genes, were combined to produce an F1 hybrid which was superior in imidazolinone tolerance to either of the heterozygous mutants alone. Evaluation of the mutants under field conditions indicated that this hybrid and the original homozygous mutants could tolerate at least two times the field-recommended rates of Assert. The field results indicated the mutants were unaffected in seed yield, maturity, quality and disease tolerance. These genes represent a potentially valuable new herbicide resistance system for canola, which has little effect on yield, quality or maturity. The mutants could be used to provide tolerance to several imidazolinones including Scepter, Pursuit and Assert.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00290837
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  • 4
    Electronic Resource
    Electronic Resource
    The Brassica mitochondrial plasmid can be sexually transmitted. Pollen transfer of a cytoplasmic genetic element (1989)
    Springer
    Molecular genetics and genomics 218 (1989), S. 419-422 
    Details
    ISSN: 1617-4623
    Keywords: Brassica ; Mitochondrial plasmids ; Maternal/paternal inheritance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The 11.3 kb mitochondrial (mt) plasmid was restored to rapeseed (Brassica napus) plants cured of the plasmid (by in vitro culture) by crossing to plasmid-containing males, but not by grafting plasmidless shoots onto plants containing the plasmid. Plasmid restoration is not associated with alterations in mt DNA restriction patterns nor is it likely the result of excision of plasmid sequences from the mt genome. Restoration of the mitochondrially-associated plasmid is probably the result of transmission of cytoplasm from the male parent through the pollen to the egg cell in the female. Pollen transfer of the plasmid also occurred in other crosses regardless of cytoplasmic or nuclear background and at an average rate of 50%. These experiments demonstrate that a cytoplasmic genetic element can be non-maternally inherited in Brassica and suggest that the mitochondria with which this element is associated are transmitted to the egg cell during fertilization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00332404
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