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  • Molecular relationships among multiple-sized plasmids of Pseudomonas syringae pv. phaseolicola

    Creator:
    Quant, Rebecca L.
    Abstract:
    Five strains of the bean pathogen Pseudomonas syringae pv. phaseolicola were analyzed for plasmid number, size, and relatedness. Each strain contained one or two indigenous plasmids which ranged in size from 6.8 to 151 kbp. BamHI and EcoRI restriction patterns revealed that total plasmid DNA from each strain had a...
    Resource Type:
    Masters Thesis
    Full Text:
    . Robert Becker, Lyle Brown, and Roy Morris for serving on my committee. I wish to thank my parents for

  • Pectolytic enzyme production by Fusarium oxysporum f. sp. lycopersici

    Creator:
    Baldwin, Charles Harry
    Abstract:
    This investigation was undertaken to determine 1) the effects of various carbon sources in defined media on pectolytic enzyme production, 2) the effect of the incubation period on pectolytic enzyme activity, and 3) the development of improved methods for the purification and characterization of the polygalacturonases (PG) produced by Fusarium...
    Resource Type:
    Dissertation
    Full Text:
    is also extended to Dr. Thomas C. Allen, Dr. Donald L. MacDonald and Dr. Roy 0. Morris for serving

  • Interaction between glyphosate and certain s-triazine herbicides

    Creator:
    Somabhi, Montien
    Abstract:
    Investigations were made in the field, greenhouse, growth chamber, and laboratory to: (a) observe the general activity of N- (phosphonomethyl)glycine (glyphosate); (b) determine the extent of its interaction with certain s-triazine herbicides; and (c) find an explanation for such an interaction. Greenhouse and growth chamber studies substantiated other observations that...
    Resource Type:
    Dissertation
    Full Text:
    , Dr. Thomas C. Moore, Dr. Roy 0. Morris, and Dr. Richard Astro for serving on my graduate committee

  • Cytokinin oxidase activity from Phaseolus vulgaris L. cv. Great Northern callus tissues

    Creator:
    Chatfield, J. Mark
    Abstract:
    Cytokinin oxidase activity in callus tissues of Phaseolus vulgaris L. cv. Great Northern has been examined using an assay based on the oxidation of radioactively labeled N⁶ -(Δ² -isopentenyl) adenine (i⁶Ade) to adenine (Ade). Conditions for the quantitative extraction and assay of the enzyme have been established. The substrate specificity...
    Resource Type:
    Dissertation
    Full Text:
    graduate student. I also wish to thank my graduate committee, Dr. David Mok, Dr. Roy Morris, Dr. Tom

  • A comparison between educable mentally retarded and normal students, using selected social and environmental variables

    Creator:
    Bates, Ralph Carson
    Abstract:
    The purpose of this study was to investigate the relationship between poverty and mental retardation and to place mental retardation in its true perspective as a social condition which thrives especially in poverty areas. More specifically, this study attempted to determine if there was any significant relationship between selected social...
    Resource Type:
    Dissertation
    Full Text:
    committee; Dr. William Crooks, Dr. Roy Foster, Dr. Norbert Hartmann and Dr. Morris Le May. I would also