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Filtering by: Creator Geiger, Barbara Remove constraint Creator: Geiger, Barbara Advisor Appleby, Arnold P. Remove constraint Advisor: Appleby, Arnold P.

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  • Effects of lactofen herbicide on cellular uptake of glyphosate herbicide in malva parviflora L.

    Creator:
    Wells, Barbara Heard
    Abstract:
    Time-course growth chamber studies were conducted on little mallow (Malva parviflora L.) to determine whether sublethal doses of lactofen (1'-(carboethoxy)ethyl-5-[2-chloro-4-(trifluoromethyl) phenoxy]-2- nitrobenzoate) would enhance uptake of glyphosate (N'-(phosphonomethyl) glycine) by altering membrane permeability. Lactofen-induced membrane peroxidation was determined by harvesting leaf discs, measuring stress ethylene evolution, and recording increases in...
    Resource Type:
    Dissertation
    Full Text:
    glyphosate herbicide in malva parviflora L. AN ABSTRACT OF THE THESIS Barbara Heard Wells for the degree

  • Apoplastic distribution of atrazine and glyphosate in intact sunflower leaves

    Creator:
    Jachetta, John Joseph
    Abstract:
    Apoplastic distribution patterns of atrazine [2-chloro-4-(ethylamino)- 6-(isopropylamino)-s-triazine], glyphosate [N-(phosphonomethyl)- glycine], the naturally occurring apoplastic leaf solutes, and the apoplastic dye PTS (trisodium 3-hydroxy-5,8,10-pyrenetrisulfonate) were compared. Aliquots of sap were expressed from intact sunflower leaves in a pressure chamber over intervals of 0.2 to 0.4 bars. Three distinct fractions were detected...
    Resource Type:
    Dissertation
    Full Text:
    vessel (Soil Moisture Equipment Corp., P.O. Box 30025, Santa Barbara, Calif.). The petiole length in