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Filtering by: Committee Member Emmingham, W. H. Remove constraint Committee Member: Emmingham, W. H. Committee Member Evans, H. J. Remove constraint Committee Member: Evans, H. J.

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  • The biosynthesis and metabolism of (-)-kaurene in cell-free extracts of immature pea seeds

    Creator:
    Coolbaugh, Ronald Charles, 1944-
    Abstract:
    Procedures were developed for assaying the biosynthesis of (-)- kaurene-¹⁴C and other intermediates in gibberellin (GA) synthesis from mevalonic acid-¹⁴C in cell-free enzyme extracts of immature pea (Pisum sativum L. cv. Alaska) seeds. This system was utilized to investigate three aspects of GA biosynthesis: (1) apparent capacities for (-)-kaurene biosynthesis...
    Resource Type:
    Dissertation
    Full Text:
    . Bishop, Dr. W. D. Loomis, Dr. Frank H. Smith and Dr. H. H. Crowell for helpful sug- gestions and

  • Some soil factors affecting snowbrush nodulation

    Creator:
    Scott, William
    Resource Type:
    Dissertation
    Full Text:
    is extended to Drs. W. W. Chi lcote, H. J. Evans, and A. P. Appleby for their willingness to take

  • Clay mineralogy and related chemical properties of soils formed on Mazama pumice

    Creator:
    Chichester, Frederick Wesley
    Abstract:
    A sequence of soil profiles was sampled along a climate-vegetation transect on the dated Mazama pumice fall in central Oregon. The <2 μ size fraction from each sample was characterized with respect to the relative significance of amorphous and crystalline components, and the individual minerals of the latter group were...
    Resource Type:
    Dissertation
    Full Text:
    investigation, and to Drs. H. J. Evans and W. D. Loomis in recognition of their willingness to serve as

  • Effects of washing and aging on the metabolism of red beet root slices

    Creator:
    Kolattukudy, Pappachan Ettoop
    Abstract:
    The rate of the C¹⁴0₂ release from glucose, specifically labeled with C¹⁴ at 1, 2, 3+4, and positions, was used to study the relative participation of pathways of glucose catabolism in red beet slices. Evidence was obtained which indicated that in mature red beets glucose was catabolized mainly via glycolysis-tricarboxylic...
    Resource Type:
    Dissertation
    Full Text:
    those on my advisory committee; Dr, R. W, l çwburgh, Dr, J, L. Kice and Dr. H. J. Evans is greatly

  • Urea release from sulfur-coated urea and nitrogen utilization by tall fescue

    Creator:
    Pettygrove, G. Stuart
    Abstract:
    Sulfur-coated urea (SCU), a slow release nitrogen fertilizer, may be economically competitive with conventional fertilizers, but little is known of the mechanism of urea release from SCU and the environmental factors which affect the urea release rate. Objectives of this thesis were: (1) to determine factors which affect the rate...
    Resource Type:
    Dissertation
    Full Text:
    three months of the project. I also wish to thank Drs. H. J. Evans, A. W. Anderson, and C. J. Weiser

  • Snowbrush, Ceanothus velutinus Dougl., its ecology and role in forest regeneration in the Oregon Cascades

    Creator:
    Zavitkovski, J.
    Abstract:
    The ecological and silvicultural importance of snowbrush, Ceanothus velutinus, in the areas west of the summit of the Oregon Cascades was studied. Particular attention has been given its nitrogen- fixing ability under both field and greenhouse conditions. On west slopes of the Oregon Cascades snowbrush occurs above 2, 500 feet...
    Resource Type:
    Dissertation
    Full Text:
    . Thanks are due to the members of my graduate committee Drs. J. R. Dilworth, H. J. Evans, and W. P. Lowry

  • Aluminum toxicity in wheat (Triticum aestivum Vill., host)

    Creator:
    Kerridge, Peter Campbell
    Abstract:
    Wheat varieties of differential tolerance to Al were used in a series of nutrient solution experiments to study the inhibitory effects of Al on growth and nutrient uptake. The pH and the Al and P concentrations were rigorously maintained to prevent the confounding effects of Al and P precipitation and...
    Resource Type:
    Dissertation
    Full Text:
    this thesis. To other members of my graduate committee, Drs. H. J. Evans, W. H. Foote, T. L. Jackson

  • Alfalfa cutting management in the Columbia Basin

    Creator:
    Suttner, Donald Lee
    Abstract:
    Field studies to determine appropriate cutting management regimes consistent with yield, quality, and persistence of stand were conducted on several alfalfa varieties in the Columbia Basin region of Oregon. Two groups of treatments, including consecutive cuts at the same stage of maturity and cuts made at varying maturities, were imposed...
    Resource Type:
    Dissertation
    Full Text:
    BASIN Redacted for Privacy Abstract approved: W. S. McGuire Field studies to determine appropriate