Theses and Dissertations at Montana State University (MSU)

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    The selection of native plants for use in the Montana landscape: selection criteria, aesthetic, cultural and environmental evaluation
    (Montana State University - Bozeman, College of Agriculture, 1985) Bruce, Shelly Marie Engler; Chairperson, Graduate Committee: Richard K. Pohl
    During the past 15 years the landscape industry has experienced increased pressure to use native plants as ornamentals. Although a demand for natives in general exists there has been a relunctance on the part of the industry to offer native species because of the economic risks involved. An ornamental scorecard was developed as an evaluation tool for comparing native plant species with plant species currently available on the ornamental market. The scorecard evaluated 24 native Montana plant species and 20 exotic ornamentals commonly used in the landscape industry in Montana. The aesthetic scorecard rated six visual characteristics using color photographs. Scored were form/habit, flower, fruit, bark, leaf, and seasonal characteristics. The thirteen environmental factors evaluated by the environmental scorecard were transplantability, lifespan, propagation, maintenance/cleanliness, soil texture and pH, moisture regime adaptability (both drought and flood tolerance), exposure tolerances (temperature, light, and wind), insect resistance, and disease resistance. Species were scored by a panel of professional evaluators in the botany, horticulture, nursery and landscape design/architecture fields. These scores allow selection of native plant species with visual and/or functional qualities that are of equal or greater value than those exhibited by plants already available on the retail market, and thus exhibit competitive marketing potential.
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    Virulence and dissemination enhancement of a mycoherbicide
    (Montana State University - Bozeman, College of Agriculture, 1999) Tiourebaev, Kanat Slyambekovich
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    Molecular mapping and characterization of two chloroplast-encoded chlorophyll deficient mutants of alfalfa (Medicago sativa L.)
    (Montana State University - Bozeman, College of Agriculture, 1988) Lee, Donald John
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    Bacterial leaf and stem blight of safflower in Montana : its epidemiology, sources of resistance and inheritance of resistance
    (Montana State University - Bozeman, College of Agriculture, 1982) Jacobs, Darrel Lee
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    Phylogenetic systematics of Strophostyles (Fabaceae)
    (Montana State University - Bozeman, College of Agriculture, 2003) Riley-Hulting, Erin Thais
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    Inheritance of stem solidness and its relationship to yield and other agronomic traits in spring wheat
    (Montana State University - Bozeman, College of Agriculture, 1993) Hayat, Mohammad Aslam
    The wheat stem sawfly, Cephus cinctus Norton (Hymenoptera: Cephidae), a devastating pest of wheat, has caused considerable economic damage in the Pacific Northwest. Solid-stemmed wheat varieties have provided a genetic source of resistance against the insect. However, solid-stemmed wheats tend to yield less than hollow-stemmed wheats. Some, but not all, studies have shown yield to be negatively related to stem solidness. To date, it is not clear whether solid-stemmed wheats have low yield due to a negative genetic correlation or to the poor genetic background of the original solid-stemmed selections. The cause of the negative association between solid stems and other traits was studied in spring wheat using solid-stemmed wheats released in different eras. The progeny derived from different crosses between solid and hollow parents was evaluated to determine the genetic basis for improved yield in modern solid-stemmed spring wheats. Space-planted nurseries of different crosses grown in 1990 and 1991 showed that the genetic basis of stem solidness is different between an early release (Rescue) and a later release (Lew) Additionally, larger experiments of F6 progeny derived from crosses between solid and hollow parents were grown in two different environments and agronomic data were gathered. The genetic correlation coefficients between stem solidness and grain yield were small and did not tend to be negative. Therefore, no negative genetic relationship appears to exist between stem solidness and grain yield. However, stem solidness was found negatively correlated to protein and plant height in early solid-stemmed releases. Thus, it appears that a linkage existed between the genes for solid stems and genes conferring poor percent protein and tall plants in the early releases. This linkage appears to have been broken in later releases. Stem solidness was independent of all other traits studied. Heritabilities of all traits, except yield, were high.
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    Purification and serology of barley yellow streak mosaic virus
    (Montana State University - Bozeman, College of Agriculture, 1993) Skaf, Jihad S.
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    The effect of simulated drought on stem-stored carbohydrate characteristics in winter wheat
    (Montana State University - Bozeman, College of Agriculture, 1989) Sabry, Sami Reda Saber
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    Genetic analysis of the MAT-1 pheromone gene of Ustilago hordei and the study of morphogenesis during the mating response
    (Montana State University - Bozeman, College of Agriculture, 1999) Anderson, Cynthia Marie
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    Transformation of Gaeumannomyces graminis and the fate of transforming DNA
    (Montana State University - Bozeman, College of Agriculture, 1991) Pilgeram, Alice LaRayne; Co-chairs, Graduate Committee: Don E. Mathre and Joan Henson
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