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Filtering by: Creator Lundstrom, C. C. Remove constraint Creator: Lundstrom, C. C. Academic Affiliation Horticulture Remove constraint Academic Affiliation: Horticulture Advisor Fuchigami, Leslie H. Remove constraint Advisor: Fuchigami, Leslie H.

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  • Modeling of dormancy and cold hardiness in red-osier dogwood (Cornus sericea L.)

    Creator:
    Kobayashi, Kent
    Abstract:
    Effects of temperature and growth stage on vegetative bud development and stem hardiness of red-osier dogwood during winter dormancy were investigated. Results were related to a degree growth stage model and were used to develop models to predict growth stages, to quantify development, and to predict hardiness. Maximum rest development...
    Resource Type:
    Dissertation
    Full Text:
    quantify development, and to predict hardiness. Manimum rest development was promoted by 5 -20 C with

  • Characteristics of ice nucleation in potato leaves

    Creator:
    Johnson, Lori K.
    Abstract:
    The innate ability of potato leaf tissue to initiate freezing was studied. Two potato species, the non-hardy cultivated potato Solanum tuberosum L. cv. Russet Burbank, and Solanum acaule Bitt. a hardy species from South America, were studied. Two treatments, low (cold) and high (warm) temperatures were included to study the...
    Resource Type:
    Masters Thesis
    Full Text:
    twigs was 3.5e,C lower than that of the intact twigs (Ashworth et al., 1985). Tissue viability is

  • Relationship of "near-lethal" stress on dormancy, cold hardiness and recovery of Red-Osier dogwood

    Creator:
    Shirazi, Abbas M.
    Abstract:
    The effects of overcoming rest by application of "near-lethal" (NL) stress treatments on the subsequent development of cold hardiness of stem tissues of red-osier dogwood, Comus sericea L., at different rest stages under three post-environments (0°, 23°, and natural condition) were studied. NL-heat stress (47°C for one hour) treatment during...
    Resource Type:
    Dissertation
    Full Text:
    Plant Pathology. My special thanks to visiting professor C. Jersa in the Forest Science Department

  • Overexpression of antioxidant genes in transgenic tomato tolerant against multiple stresses

    Creator:
    Wang, Yueju
    Abstract:
    The effect of increased manganese superoxide dismutase (Mn-SOD) and cytosolic ascorbate peroxidase (cAPX) on various abiotic stresses was studied using transgenic tomato (Lycopersicon esculentum) plants. Transformants were selected in vitro based on kanamycin resistance, confirmed by PCR and northern blot analyses. Northern blots showed an enhanced gene expression of Mn-SOD...
    Resource Type:
    Dissertation
    Full Text:
    tomato plants were more resistant to heat (40 °C) and UV-B (2.5 mW/cm2 for 5 days) stresses compared to

  • The free radical scavenging system in overcoming phytotoxicity and breaking dormancy

    Creator:
    Zhen, Liping
    Abstract:
    Hydrogen cyanamide (CY) induced earlier budbreak, more uniform and a higher percentage of budbreak in resting poplar (Populus alba x P. gradidentata, NC 5339) plants. However, it was phytotoxic to poplar when applied at 0.5 M or higher concentrations. Percent budbreak increased and percent dieback decreased when poplar plants were...
    Resource Type:
    Dissertation
    Full Text:
    Buthionine Sulfoximine (BSO) in Bromegrass Cells Under Normal Growing Conditions 166 C. Effect of

  • Indicators of deciduous shade tree development useful for timing chemical defoliation and harvest

    Creator:
    Hotze, Mary Louise
    Abstract:
    In the mild climate of the Pacific Northwest, the harvesting of deciduous shade trees in wholesale nurseries is prolonged from October to January because of autumn growth and prolonged leaf retention. Economically, it is advantageous to defoliate nursery trees at the earliest possible date. Premature defoliation, however, can cause die...
    Resource Type:
    Dissertation
    Full Text:
    ) treatment in the growth chamber at 20 C days and 15 C nights. 94 Micromolar concentrations of various

  • Ethylene production, vegetative maturity, and winter dormancy in red-osier dogwood

    Creator:
    Seibel, Janice Rose
    Abstract:
    The stage of dormancy development at which deciduous nursery stock can be safely defoliated for harvest was investigated in red-osier dogwood (Cornus stolonifera Michx.). This stage, previously called "vegetative maturity," was found to correspond to the onset of winter dormancy in red-osier dogwood. A reduction in ethylene production by excised...
    Resource Type:
    Masters Thesis
    Full Text:
    : its physiological significance. Plant Physiol. 50:719-722. 5. Chadwick, L. C. and R. Houston

  • Hardiness-maturity relations in red-osier dogwood (Cornus stolonifera Michx.)

    Creator:
    Nissila, Peter Carl
    Abstract:
    Red-osier dogwood plants were grown outdoors in a lathhouse and under two temperature regimes in growth chambers to determine the time of vegetative maturity, the transition between summer and winter dormancy. Xylem water potential (XWP), tissue moisture content, ethylene and ethane production, and electrical impedance were used to try to...
    Resource Type:
    Masters Thesis
    Full Text:
    1 Electrical impedance values, microscopic hardiness ratings of tissue frozen to -10 C. , and

  • Growth in herbaceous perennials

    Creator:
    Nakajima, Rie
    Abstract:
    Several studies of herbaceous perennials have addressed the effects of environmental factors during and after production, inherent cold hardiness, and post-harvest handling procedures to enhance flowering and growth during establishment. The regrowth of both woody and herbaceous forage plants following establishment is reported to be directly related to reserve-nitrogen content....
    Resource Type:
    Masters Thesis
    Full Text:
    , B, C, D, and E) 21 2. Harvest dates for aboveground tissues of 14 varieties from Nurseries A, B

  • Factors affecting the incidence and severity of Phytophthora syringae cankers in pear (Pyrus communis) trees

    Creator:
    Laywisadkul, Srisangwan
    Abstract:
    Container grown pear trees were used to determine the effects of the following factors on the susceptibility to Phytophthora syringae: 1) tree nitrogen (N) status and foliar sprays of urea and copper-EDTA (CuEDTA); 2) dormancy and environmental conditions; 3) wound and wound age; and 4) chemical and biological control measures....
    Resource Type:
    Dissertation
    Full Text:
    ) nitrogen fertigation rate during August 2002, and (C) urea sprays in the autumn on nitrogen (N