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Filtering by: Subject Phenylbutazone -- Physiological effect Remove constraint Subject: Phenylbutazone -- Physiological effect Committee Member Reed, Donald J. Remove constraint Committee Member: Reed, Donald J. Decade 1960-1969 Remove constraint Decade: 1960-1969

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  • Manganese absorption by barley roots

    Creator:
    Maas, E. V. (Eugene Vernon), 1936-
    Abstract:
    An investigation of Mn uptake by five-day-old excised barley roots revealed that a metabolically-mediated process was involved. In short-term experiments, the rate of Mn absorption was comparable to that of the macronutrient cations. Like other metabolically absorbed cations, the Mn absorption rate was a direct function of the ambient concentration...
    Resource Type:
    Dissertation
    Full Text:
    studied, Li alone had a pronounced stimulatory effect while Na, K and Rb markedly reduced the absorption

  • The effects of ultraviolet irradiation on the photosynthetic apparatus

    Creator:
    Mantai, Kenneth Edward
    Abstract:
    The effects of ultraviolet (UV) irradiation on photosynthesis and various partial reactions involving the individual photoreactions of photosynthesis were examined. These reactions included photo-reduction in adapted green algae, Hill reaction, cyclic photophosphorylation, the 520 nm absorbance change and variable-yield fluorescence. The reactions were measured in spinach chloroplasts and isolated chloroplasts...
    Resource Type:
    Dissertation
    Full Text:
    totally the system I portion of the absorbance change had no effect on the ability of chloroplasts iso