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  • Spectroscopy of biophysical, physiological and pathological responses of plant germplasm

    Creator:
    Li, Ning
    Abstract:
    Imaging spectra of plant tissues yield considerable potential and useful information for basic studies and agriculture practice. We constructed an imaging spectrophotometer with spectral range from 400 nm to 1100 nm, which was used to study various physiological events of plant germplasm: location of bundle sheath and mesophyll cells in...
    Resource Type:
    Dissertation
    Full Text:
    . Physiological and Pathological Responses of Plant Germplasm. Abstract approved: ^ Larry-S-BSley Imaging

  • Response of strawberry plants to manganese nutrition

    Creator:
    Sabharwal, Sudarshan Lal
    Abstract:
    The effects of manganese nutrition on growth, mineral composition, carbohydrate and nitrogen metabolism, IAA oxidase and phenols of 'Northwest' strawberry plants are reported. Growth and mineral composition response were investigated in sand culture and Hoagland's solution 2 modified to contain 0.0, 0.5, 2.5, 12.5, 25.0, 62.5 and 125.0 ppm substrate...
    Resource Type:
    Dissertation
    Full Text:
    . Plant weight and total leaf area of the plants harvested after 20 weeks was greatest with 2. 5 ppm Mn

  • Exploration of the feasibility of developing a winter hardy 'Marion' blackberry through genetic engineering

    Creator:
    Meng, Rengong
    Abstract:
    Experiments focusing on plant growth regulators’ concentrations and combination, mineral salt formulations and TDZ pretreatment formations were conducted to optimize in vitro shoot regeneration from leaf and petiole explants of 'Marion' blackberry. Optimum shoot formation was obtained when stock plants were incubated in TDZ pretreatment medium for three weeks before...
    Resource Type:
    Dissertation
    Full Text:
    through genetic engineering Abstract approved: Chad E. Finn Experiments focusing on plant

  • Glyphosate activity as affected by spray drop size and leaf coverage

    Creator:
    King, Wayne O.
    Abstract:
    Bean shoot parts that respond to glyphosate (N- (phosphonomethyl)glycine) in ways useful for bioassay were determined by applying glyphosate doses of 3.8 to 60.3 ug ae per plant to the simple leaves when the first trifoliolate leaflets were about 1 cm long. Dry weights of parts that were almost fully...
    Resource Type:
    Dissertation
    Full Text:
    determined by applying glyphosate doses of 3.8 to 60.3 ug ae per plant to the simple leaves when the

  • Water relations of 'Olympus' strawberry and the growth response to drip irrigation and polyethylene mulch

    Creator:
    Renquist, A. Richard
    Resource Type:
    Dissertation
    Full Text:
    were designed to determine the plant growth and yield responses of strawberry (Fragaria x ananassa

  • Carbohydrate and photosynthate distribution and nitrogen fixation in beans (Phaseolus vulgaris L.)

    Creator:
    Waters, Luther
    Abstract:
    A series of four studies were conducted in Colombia, South America, in the field and the greenhouse to determine the effect of plant competition and mulching on carbohydrate and photosynthate distribution and nitrogen fixation in beans (Phaseolus vulgaris L.). Mulching beans (determinant growth habit) with rice hulls in the lowland...
    Resource Type:
    Dissertation
    Full Text:
    population with improved plant growth and yield. Kueneman et al., (61) used a wider range of plant

  • Effects of flooding on peach, apple, quince and several pear species

    Creator:
    Andersen, Peter C.
    Abstract:
    A series of experiments was designed to investigate differential flood-tolerance and the phenomenon of flood-induced stomatal closure of several fruit tree species. The first two experiments were conducted with potted plants submerged outdoors 5-10 cm above the soil line. Plant morphology, growth, leaf conductance (cL), and soil oxygen diffusion rate...
    Resource Type:
    Dissertation
    Full Text:
    conduct- ed with potted plants submerged outdoors 5-10 cm above the soil line. Plant morphology

  • A closed root environment for plant production

    Creator:
    Blackburn, Bryan (Bryan Keith), 1955-
    Abstract:
    Thesis research focused on: 1) Water and fertilizer gradients within the plant root zone, and effects of chemical and physical gradients on Trichoderma harzianum populations. 2) Regulation of root growth physically with permeable fabric containers and chemically with copper compounds. 3) Effects of copper coatings for fabric containers on Glomus...
    Resource Type:
    Masters Thesis
    Full Text:
    water present within a range of energy potentials at which plant uptake of water can occur, and the

  • Responses of bush snap bean cultivars (Phaseolus vulgaris L.) to plant population densities

    Creator:
    Stang, Jack Rudolf
    Abstract:
    The effects of plant population densities on the growth and development of six cultivars of bush snap beans (Phaseolus vulgaris L.) were studied in two field experiments. A systematic planting design was used to achieve a range of densities from 21- to 110 plants per m² and a rectangularity of...
    Resource Type:
    Dissertation
    Full Text:
    : RESPONSES OF BUSH SNAP BEAN CULTIVARS (PHASEOLUS VULGARIS L. ) TO PLANT POPULATION DENSITIES

  • The relationship of electrical impedance to vegetative maturity and dormancy in red-osier dogwood

    Creator:
    Parmelee, Kathleen Ann
    Abstract:
    Techniques to measure vegetative maturity and dormancy of deciduous nursery stock were investigated in red-osier dogwood. Previous methods which were based on: survival or tip dieback, change in level of ethylene production, xylem water potential, and alteration of square wave traces traces, provided no better indication of dormancy than did...
    Resource Type:
    Masters Thesis
    Full Text:
    impedance instrumentation did not cover a sufficient range to measure the highest plant responses, but