Index Catalog // ScholarsArchive@OSU

1. Genetic diversity and interactions in populations of plants and pathogens

Creator:: Knott, Elizabeth A.
Abstract:: Two experiments involving interactions between wheat (Triticum aesitivium L.) cultivars and rust pathogens were investigated. One experiment evaluated the aggressiveness (measured by infection efficiency and latent period) of populations of Puccinia recondita Rob. when inoculated on the cultivar they were isolated from, their "own" cultivar, and when inoculated onto other...
Resource Type:: Masters Thesis
Full Text:: under disease-free conditions, and for grain yield and percent green leaf area when inoculated with

2. Epidemiology of disease caused by Pseudomonas syringae as an epiphyte and its frequency, distribution, and characteristics as an endophyte of pear

Creator:: Whitesides, Steven K.
Abstract:: Conditions were established for inducing pear blossom blast caused by Pseudomonas syringae (Ps) on both attached and detached shoots. The incidence of disease was proportional to the log of Ps population under optimal temperature, moisture and bloom developmental stage. Highest incidence of infection followed occurrence of a major exotherm in...
Resource Type:: Dissertation
Full Text:: disease was proportional to the log of Ps population under optimal temperature, moisture and bloom

3. The disease cycle of side rot of pear, caused by Phialophora malorum

Creator:: Sugar, David
Abstract:: Potential sources of inoculum of Phialophora malorum were investigated. P. malorum was found to be a soil-borne fungus whose role as a postharvest pathogen of pear is dependent upon passive dispersal with infested soil. P. malorum survived in soil under a wide range of conditions, with greatest survival in cool,...
Resource Type:: Dissertation
Full Text:: Botany and Plant Pathology presented on December 1, 1989. Title: The Disease Cycle of Side Rot of Pear

4. Comparative emigration, immigration, and colonization of apple by Metaseiulus occidentalis Nesbitt and Typhlodromus pyri Scheuten (Acarina: Phytoseiidae)

Creator:: Dunley, John E.
Abstract:: Dispersal and colonization of young potted apple trees by the spider-mite predators Metaseiulus occidentalis Nesbitt and Typhlodromus pyri Scheuten were studied in the Hood River Valley of Oregon. Experimental mini-orchards of 10 four-year old potted apple trees were established at distances of 0, 10, and 100 m downwind from commercial...
Resource Type:: Masters Thesis
Full Text:: on biological controls, selective pesticides, and cultural methods which reduce pest populations

5. Mineral nutrition, pyruvate kinase activity, and protein concentration in 'd'Anjou' pear fruit affected by cork spot

Creator:: Bevacqua, Robert Francis
Resource Type:: Dissertation
Full Text:: Nutrition, Pyruvate Kinase Activity, and Protein Ooncentraticri in 'd'Anjou' Pear Fruit Affected by Pork

6. Effects of near anaerobic storage conditions on physiology and flavor of various fruit types and on mortality of apple maggot (Rhagoletis pomonella)

Creator:: Kosittrakun, Manit
Resource Type:: Dissertation
Full Text:: Anaerobic Storage Conditions on Physiology and Flavor of Various Fruit Types and on Mortality of Apple

7. The genetic analyses of neck-rot (Botrytis allii Munn) resistance, pungency and soluble solids content of onion (Allium cepa L.)

Creator:: Lin, Mau-Wei
Resource Type:: Dissertation
Full Text:: negative correlation between PA and neck-rot disease index (DI), and a medium negative correlation

8. Host suitability studies of Douglas-fir and white alder to the gypsy moth

Creator:: Joseph, Gladwin
Abstract:: Douglas-fir, Pseudotsuga menziesii and white alder, Alnus rhombifolia, species that are prevalent in the Pacific Northwest, were fed to larvae of the gypsy moth, Lymantria dispar L. Gypsy moth larvae from different familial lines (egg masses) from a single geographic population were evaluated on these hosts. The larvae were fed...
Resource Type:: Masters Thesis
Full Text:: willing and cheerful technical assistance. This research was funded by USDA, CRGO, Pest science grant

9. The biology and seasonality of the parasitiod Trioxys pallidus Haliday in western Oregon

Creator:: Cohn, Judy L.
Abstract:: Seasonal synchrony between the filbert aphid, Myzocallis coryli (Goetze) and its newly introduced parasitoid Trioxys pallidus Haliday was examined in the field to evaluate the effectiveness of parasitoid based biological control in filbert orchards of Oregon. Fieldemergence observations showed that 50% eclosion of the aphid occurred 14 days before that...
Resource Type:: Masters Thesis
Full Text:: filbert seedlings from Europe but did not become a pest until the 1920's (Smith and Parron, 1978

10. Ammonium in grapevines : seasonal levels in tissue and xylem extracts, and a tendril model system

Creator:: Jordan, David T.
Resource Type:: Dissertation
Full Text:: Grapevines: Seasonal Levels in Tissue and Xylem Extracts, and a Tendril Model System. Abstract approved

ScholarsArchive@OSU

1. Genetic diversity and interactions in populations of plants and pathogens

2. Epidemiology of disease caused by Pseudomonas syringae as an epiphyte and its frequency, distribution, and characteristics as an endophyte of pear

3. The disease cycle of side rot of pear, caused by Phialophora malorum

4. Comparative emigration, immigration, and colonization of apple by Metaseiulus occidentalis Nesbitt and Typhlodromus pyri Scheuten (Acarina: Phytoseiidae)

5. Mineral nutrition, pyruvate kinase activity, and protein concentration in 'd'Anjou' pear fruit affected by cork spot

6. Effects of near anaerobic storage conditions on physiology and flavor of various fruit types and on mortality of apple maggot (Rhagoletis pomonella)

7. The genetic analyses of neck-rot (Botrytis allii Munn) resistance, pungency and soluble solids content of onion (Allium cepa L.)

8. Host suitability studies of Douglas-fir and white alder to the gypsy moth

9. The biology and seasonality of the parasitiod Trioxys pallidus Haliday in western Oregon

10. Ammonium in grapevines : seasonal levels in tissue and xylem extracts, and a tendril model system

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1. Genetic diversity and interactions in populations of plants and pathogens

2. Epidemiology of disease caused by Pseudomonas syringae as an epiphyte and its frequency, distribution, and characteristics as an endophyte of pear

3. The disease cycle of side rot of pear, caused by Phialophora malorum

4. Comparative emigration, immigration, and colonization of apple by Metaseiulus occidentalis Nesbitt and Typhlodromus pyri Scheuten (Acarina: Phytoseiidae)

5. Mineral nutrition, pyruvate kinase activity, and protein concentration in 'd'Anjou' pear fruit affected by cork spot

6. Effects of near anaerobic storage conditions on physiology and flavor of various fruit types and on mortality of apple maggot (Rhagoletis pomonella)

7. The genetic analyses of neck-rot (Botrytis allii Munn) resistance, pungency and soluble solids content of onion (Allium cepa L.)

8. Host suitability studies of Douglas-fir and white alder to the gypsy moth

9. The biology and seasonality of the parasitiod Trioxys pallidus Haliday in western Oregon

10. Ammonium in grapevines : seasonal levels in tissue and xylem extracts, and a tendril model system

Limit your search