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Phenotypic Plasticity of the Hydrasperman Seed Fern Tetrastichia bupatides Gordon (Lyginopteridaceae)

Creator:: Dunn, Michael T. and Rothwell, Gar W.
Abstract:: Fifty-nine stems of Tetrastichia bupatides, numerous frond segments, and roots from Oxroad Bay, Scotland, have recently been analyzed. They reveal that many characters originally used to describe this species exhibit a wider range of variation than previously suspected. These data suggest that ribs of the protostele are most commonly four...
Resource Type:: Article
Full Text:: FERN TETRASTICHIA BUPATIDES GORDON (LYGINOPTERIDACEAE) Michael T. Dunn1,* and Gar W. Rothwelly

Ecology of Pinus albicaulis on Bachelor Butte, Oregon

Creator:: Lueck, Dennis
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF DENNIS LUECK for the degree of MASTER OF ARTS in BOTANY AND PLANT

Taxonomic studies of the Eucephalus complex of Aster in the Pacific Northwest

Creator:: Thompson, Dennis Dean
Resource Type:: Masters Thesis
Full Text:: the Pacific Northwest AN ABSTRACT OF THE THESIS OF Dennis Dean Thompson for the degree Master of

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:: Tyler C. Gordon for the degree of Master of Science in Botany and Plant Pathology presented on

Fungi associated with Douglas-fir seed during cone development, seed processing, and storage

Creator:: Gordon, Lewin Roland
Abstract:: The Pacific Coast form of Douglas-fir in natural forest succession is an intermediate species thriving in the Coast Range and Cascade Mountains of the Pacific Northwest. This species constitutes 26 percent of the standing timber in the United States, and 24 percent of the nation's annual timber harvest. Characteristics of...
Resource Type:: Masters Thesis
Full Text:: Development, Seed Processing, and Storage AN ABSTRACT OF THE THESIS OF Lewin Roland Gordon for the (Name

Effects of the Mycoparasite Sphaerellopsis filum on Overwintering Survival of Stem Rust in Perennial Ryegrass

Creator:: Gordon, T. C. and Pfender, W. F.
Abstract:: Sphaerellopsis filum is a mycoparasite of Puccinia graminis subsp. graminicola, a rust fungus that causes widespread crop damage on perennial ryegrass grown for seed. In observations taken over the winter months, S. filum was found naturally colonizing 2% of P. graminis subsp. graminicola uredinia on first-year plantings and 25% of...
Resource Type:: Article
Full Text:: Mycoparasite Sphaerellopsis filum on Overwintering Survival of Stem Rust in Perennial Ryegrass T. C. Gordon

Studies on the bacterial gummosis of stone fruits

Creator:: Van Gundia, Gordon Keller
Resource Type:: Masters Thesis
Full Text:: SOHOOL OF AGRICULTUBE By GORDON K. VAN CUNDIA May 23 1916. - - - - - - - prore3or charge of

Conservation of Rorippa columbiae : an evaluation of reintroduction potential through the study of germination ecology, propagation methods, and habitat requirements

Creator:: Kentnesse, Laura E.
Abstract:: Rare plant reintroductions are a critical conservation tool for the augmentation of diminishing populations, or re-establishment of extirpated populations. Analysis of reintroduction failures suggests that a sophisticated understanding of species biology, ecology, and habitat is essential for producing self-sustaining rare plant populations. This study sought to generate that background knowledge...
Resource Type:: Masters Thesis
Full Text:: statistical testing and ecological insights. I thank Dr. Dennis Albert for his enthusiasm for playa species

A systematic study of Lathyrus vestitus Nutt. ex T. & G. (Fabaceae) and allied species of the Pacific Coast

Creator:: Broich, Steven L.
Abstract:: Eight species of Lathvrus (Fabaceae, Faboideae) endemic to the Pacific Coast of North America were the subject of a systematic investigation. Taxa studied included Lathvrus vestitus, Nutt. ex T. & G., L. laetif lorus Greene, L.. iepsonii Greene, £,. splendens Kellogg, L. polvphvllus, Nutt. ex T. & G., L. holochlorus...
Resource Type:: Dissertation
Full Text:: A systematic study of Lathyrus vestitus Nutt. ex T. & G

Irrigated crop research in Oregon's Columbia Basin : 1981 research report

Creator:: Oregon State University. Agricultural Experiment Station and Columbia Basin Agricultural Research Center
Abstract:: Published July 1981. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Resource Type:: Technical Report
Full Text:: Data - Columbia Basin Agriculture Research and Extension Center, Hermiston, Oregon AUTHORS 1. T

ScholarsArchive@OSU

Phenotypic Plasticity of the Hydrasperman Seed Fern Tetrastichia bupatides Gordon (Lyginopteridaceae)

Ecology of Pinus albicaulis on Bachelor Butte, Oregon

Taxonomic studies of the Eucephalus complex of Aster in the Pacific Northwest

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

Fungi associated with Douglas-fir seed during cone development, seed processing, and storage

Effects of the Mycoparasite Sphaerellopsis filum on Overwintering Survival of Stem Rust in Perennial Ryegrass

Studies on the bacterial gummosis of stone fruits

Conservation of Rorippa columbiae : an evaluation of reintroduction potential through the study of germination ecology, propagation methods, and habitat requirements

A systematic study of Lathyrus vestitus Nutt. ex T. & G. (Fabaceae) and allied species of the Pacific Coast

Irrigated crop research in Oregon's Columbia Basin : 1981 research report

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