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Filtering by: Advisor Kimeldorf, Donald J. Remove constraint Advisor: Kimeldorf, Donald J. Subject Cytokinins Remove constraint Subject: Cytokinins

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  • Cytokinin antagonists and antibiotics related to nalidixic acid : effects on Phaseolus and Nicotiana callus tissues

    Creator:
    Marsden, Katherine E.
    Abstract:
    The effects of five cytokinin antagonists on the growth of cytokinin-autonomous lines of Phaseolus lunatus cv. Kingston, Phaseolus vulgaris cv. Great Northern, and Nicotiana tabacum cv. Wisconsin 38 callus tissues have been compared. The antagonists tested included four N⁴-substituted 4-amino-2-methylthiopyrrolo[2,3-d]pyrimidines bearing the following N⁴ side chains, 4-n-pentyl- (ms²pnN⁴Prp), 4-n-hexyl- (ms²HxN⁴Prp),...
    Resource Type:
    Masters Thesis
    Full Text:
    Nicotiana Callus Tissue Abstract approved: Redacted for Privacy Donald J. 7 The effects of five cytokinin

  • 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:
    Privacy Donald J. Armstrong Cytokinin oxidase activity in callus tissues of Phaseolus vulgaris L. cv

  • Interaction of cytokinins and phenethylamines in cell-free enzyme systems and plant callus cultures

    Creator:
    Abdelnour-Esquivel, Ana
    Abstract:
    1-Phenyl-3-(2-Thiazoly1)-2-Thiourea (PTTU), has been reported to inhibit dopamine-fi-hydroxylase (a copper-containing enzyme involved in the pathway of biosynthesis of adrenaline in animal systems). In the present study, PTTU has been shown to have cytokinin activity in the tobacco bioassay. The cytokinin activity of PTTU suggested that cytokinin-active N⁶-substituted adenine derivatives might...
    Resource Type:
    Masters Thesis
    Full Text:
    . Abstract approved: Redacted for privacy Donald J. Armstrong 1-Phenyl-3-(2-Thiazoly1)-2-Thiourea (PTTU