Index Catalog // ScholarsArchive@OSU

An experimental reintroduction of Pleuropogon oregonus, a rare wetland grass native to Oregon

Creator:: Groberg, Matthew G.
Abstract:: Pleuropogon oregonus Chase is a rare wetland grass endemic to eastern Oregon. The species is composed of two widely separated populations, one in Lake County and one in Union County. In order to reduce the risk of extinction, the Oregon Department of Agriculture Native Plant Conservation Program initiated several reintroduction...
Resource Type:: Masters Thesis
Full Text:: and Plant Pathology presented on December 16, 2013 Title: An Experimental Reintroduction of

Epidemiological insights into Armillaria mellea root rot in a managed Ponderosa pine forest

Creator:: Shaw, Charles G. (Charles Gardner) 1948-
Abstract:: Root rot of ponderosa pine caused by Armillaria mellea was studied in a pine forest that had been under management for 30 years in Klickitat County, Washington. Information sources included disease survey, detailed observation and description of specific disease situations, and examination of roots in situ and removed. Roughly circular...
Resource Type:: Dissertation
Full Text:: degree DOCTOR OF PHILOSOPHY (Name) (Degree) in Botany and Plant Pathology presented on September 16

Bionomics of the clover cyst nematode, Heterodera trifolii (Goffart, 1932) Oostenbrink, 1939 (Nematoda: Heteroderidae)

Creator:: Sen, Arun Kumar
Resource Type:: Masters Thesis
Full Text:: February 16, 1963 Title: BIONOMICS OF THE CLOVER CYST NEMATODE, HETERODERA TRIFOLII (GOFFART, 1932

Overwintering survival of stem rust on perennial ryegrass : construction of a simulation model, and effects of the mycoparasite Sphaerellopisis filum

Creator:: Gordon, Tyler C.
Abstract:: Stem rust, caused by the fungus Puccinia graminis subsp. graminicola, can cause yield reductions exceeding 90% on perennial ryegrass (Lolium perenne L.) crops grown for seed if not treated with fungicide in the spring. There is evidence that late-spring stem rust epidemics are initiated by populations that survived the winter....
Resource Type:: Masters Thesis
Full Text:: September 16, 2011. Title: Overwintering Survival of Stem Rust on Perennial Ryegrass: Construction of

The biology and control of Phytophthora root and stem rot of apple rootstocks from stool beds

Creator:: Tidball, Carolyn Jean
Abstract:: The present studies were conducted to better understand the etiology, epidemiology and potential control of the Phytophthora stem root rot as it occurs in apple stool beds. Symptoms of Phytophthora root and stem rot occurred as early as May and continued to develop throughout the growing season. Sunken brown-black lesions...
Resource Type:: Masters Thesis
Full Text:: degree of Master of Science in Botany and Plant Pathology presented on December 16, 1987 . Title: The

Characteristics of soil organic matter in two forest soils

Creator:: Crow, Susan E.
Abstract:: Soil organic matter (SOM) is the terrestrial biosphere's largest pool of organic carbon (C) and is an integral part of C cycling globally. Soil organic matter composition typically can be traced directly back to the type of detrital inputs; however, the stabilization of SOM results as a combination of chemical...
Resource Type:: Dissertation
Full Text:: of Doctor of Philosophy in Botany and Plant Pathology presented on March 16. 2006. Title

Acyl-ACP thioesterases and beta-ketoacyl-ACP synthase regulate fatty acid chain length in seed oils of Cuphea wrightii

Creator:: Leonard, Jeffrey M.
Resource Type:: Dissertation
Full Text:: third class (16 progeny) accumulated no 10:0 and had a phenotype similar to the Cw FatB1 homozygous

Purification and partial characterization of a virus associated with korogwe leaf spot disease of sisal

Creator:: Mpunami, Anatolia
Abstract:: Sisal Wave sisalana Perrine), one of Tanzania's main cashcrops, is severely affected by korogwe leaf spot disease (KLS).Infected plants show chocolate brown, concentric, scablike eruptions on both surfaces of mature leaves, and produce stained, low-quality fiber. A flexuous, rod-shaped virus was isolated from KLS-infected sisal leaves and studied at Oregon...
Resource Type:: Masters Thesis
Full Text:: the degree of Master of Science in Botany and Plant Pathology presented on October 16. 1986 Title

A fistful of Astragalus : phenotypic and genotypic basis of the most taxon rich species in the North American flora

Creator:: Knaus, Brian J.
Abstract:: The study of the infra-specific ranks (i.e., subspecies and variety) can be considered the study of the process of speciation. Astragalus lentiginosus Douglas ex Hooker (Fabaceae) is the most taxon rich species in the U.S. flora currently including 40 taxonomic varieties. These varieties were described using traditional taxonomic methods primarily...
Resource Type:: Dissertation
Full Text:: September 16, 2008. Title: A Fistful of Astragalus: Phenotypic and Genotypic Basis of the Most Taxon

The effects of Phytophthora ramorum stem inoculation on aspects of tanoak physiology and xylem function in saplings and seedlings

Creator:: Stamm, Elizabeth A.
Abstract:: Phytophthora ramorum, an oomycete plant pathogen, is the causal agent of sudden oak death, a serious disease of Fagaceous trees in California and Oregon over the last decade. Tanoak (Notholithocarpus densiflorus) is one of the most susceptible host species, but the cause of host mortality is poorly understood. Previous research...
Resource Type:: Masters Thesis
Full Text::  presented on March 16, 2012  Title: The Effects of Phytophthora ramorum Stem Inoculation on Aspects of

ScholarsArchive@OSU

An experimental reintroduction of Pleuropogon oregonus, a rare wetland grass native to Oregon

Epidemiological insights into Armillaria mellea root rot in a managed Ponderosa pine forest

Bionomics of the clover cyst nematode, Heterodera trifolii (Goffart, 1932) Oostenbrink, 1939 (Nematoda: Heteroderidae)

Overwintering survival of stem rust on perennial ryegrass : construction of a simulation model, and effects of the mycoparasite Sphaerellopisis filum

The biology and control of Phytophthora root and stem rot of apple rootstocks from stool beds

Characteristics of soil organic matter in two forest soils

Acyl-ACP thioesterases and beta-ketoacyl-ACP synthase regulate fatty acid chain length in seed oils of Cuphea wrightii

Purification and partial characterization of a virus associated with korogwe leaf spot disease of sisal

A fistful of Astragalus : phenotypic and genotypic basis of the most taxon rich species in the North American flora

The effects of Phytophthora ramorum stem inoculation on aspects of tanoak physiology and xylem function in saplings and seedlings

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