Index Catalog // ScholarsArchive@OSU

Verticillium wilt of hops : pathogenicity, host range, and temperature relations of the causal agents

Creator:: Zehsazian, Hassan
Abstract:: Verticillium wilt of hops in Oregon, caused by Verticillium dahliae Kleb., was first reported in 1956. Later, V. albo-atrum Reinke & Berth. was also isolated from infected hop plants, and thus both species of the fungus were shown to be the causal agents of the disease in Oregon. The purpose...
Resource Type:: Dissertation
Full Text:: temperature relations of the causal agents AN ABSTRACT OF THE THESIS OF HASSAN ZEHSAZIAN for the DOCTOR OF

Unearthing the Cretaceous Diversification of Cornales

Creator:: Atkinson, Brian A.
Abstract:: The order Cornales (dogwoods) is the earliest diverging lineage within the most diverse group of flowering plants, the asterids (>80,000 species). Although molecular phylogenetics have significantly improved our understanding of cornalean systematics, early phylogenetic relationships remain uncertain due to an initial rapid radiation. The fossil record of Cornales is extensive...
Resource Type:: Dissertation
Full Text:: Paleobotany and the Paleobotanical Section of the Botanical Society of America. Thanks to Pankaj Jaiswal for

Understanding sporulation and dissemination of Podosphaera macularis, hop powdery mildew

Creator:: Peetz, Amy B.
Abstract:: Podosphaera macularis causes one of the most important diseases, powdery mildew, of Humulus lupulus (hop). If left unmanaged, hop powdery mildew can cause total crop loss due to disease or browning of hop cones rendering the cones unmarketable to buyers. The Hop Powdery Mildew Infection Risk Index (HOPS) is heavily...
Resource Type:: Masters Thesis
Full Text:: Microsoft Word - Thesis Final.doc AN ABSTRACT OF THE

Transmission Biology of Raspberry latent virus, the First Aphid-Borne Reovirus

Creator:: Quito-Avila, Diego F., Lightle, Danielle, Lee, Jana, and Martin, Robert R.
Abstract:: Raspberry latent virus (RpLV) is a newly characterized reovirus found in commercial raspberry fields in the Pacific Northwest (PNW). Thus far, all members of the plant reoviruses are transmitted in a replicative, persistent manner by several species of leafhoppers or planthoppers. After several failed attempts to transmit RpLV using leafhoppers,...
Resource Type:: Article
Full Text:: Society of America, Lanham, MD. 45. Watson M. A, and Roberts F. M. 1939. A comparative study of the

The sequestrate relatives of Russula in Australia and New Zealand

Creator:: Lebel, Teresa
Resource Type:: Dissertation
Full Text:: . Thanks also to the Mycological Society of America for several travel awards and also to the members who

The Seed Cone Eathiestrobus gen. nov.: Fossil Evidence for a Jurassic Origin of Pinaceae

Creator:: Rothwell, Gar W., Mapes, Gene, Stockey, Ruth A., and Hilton, Jason
Abstract:: Premise of the study: Pinaceae and nonpinoid species are sister groups within the conifer clade as inferred from molecular systematic comparisons of living species and therefore should have comparable geological ages. However, the fossil record for the nonpinoid lineage of extant conifer families is Triassic, nearly 100 million years older...
Resource Type:: Article
Full Text:: Botanical Society of America Conifers are among the most diverse and economically im- portant of all

The Primary Disease Gradient of Wheat Stripe Rust (Puccinia striiformis f. sp. tritici) Across Spatial Scales

Creator:: Farber, Daniel
Abstract:: Wheat stripe rust (WSR), also called yellow rust of wheat (Tricitum spp.), causal agent Puccinia striiformis f.sp. tritici (Pst), is a foliar disease of major economic importance on wheat, especially grown in temperate locations. WSR causes major losses of wheat yield, estimated at nearly $ 1 billion per year, and...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Daniel Farber

The possibility of inter-transmission of tulip mosaic and iris mosaic by insect vectors, especially aphids

Creator:: Whitaker, William Carey
Resource Type:: Masters Thesis
Full Text:: . (4) ____________ "Breaking" in Tulips, The Annals of Applied BiologyVol. XV, No. 4, pp 529-539 Nov

The parasite Aspergillus flavus Link and other fungi of the biosphere of the alkali bee Nomia melanderi Ckll., in eastern Oregon and Washington

Creator:: Baker, Gerald Merritt
Abstract:: The pathogenicity of A. flavus on alkali bee larvae was studied using sample materials from three nesting sites of these soil inhabiting bees along the Oregon-Washington state line. Soil saprophytes of the biosphere of the alkali bee were also studied. Field observations and direction of soil cores from bee beds...
Resource Type:: Dissertation
Full Text:: The parasite Aspergillus flavus link and other fungi of

The influence of prescribed fire on the rare endemic plant Delphinium pavonaceum (Peacock larkspur)

Creator:: McKernan, Brie-Anne
Abstract:: In the wetland prairie of William L. Finley National Wildlife Refuge (FNWR) in western Oregon, we investigated the response of Delphinium pavonaceum Ewan (peacock larkspur, Ranunculaceae), an endangered perennial forb, to four unreplicated dormant season fire regimes of 0, 2, 4, or 10 fires that were applied over a 12-year...
Resource Type:: Masters Thesis
Full Text:: grants from the Bonnie C. Templeton Endowment and the Corvallis Chapter of the Native Plant Society of

ScholarsArchive@OSU

Verticillium wilt of hops : pathogenicity, host range, and temperature relations of the causal agents

Unearthing the Cretaceous Diversification of Cornales

Understanding sporulation and dissemination of Podosphaera macularis, hop powdery mildew

Transmission Biology of Raspberry latent virus, the First Aphid-Borne Reovirus

The sequestrate relatives of Russula in Australia and New Zealand

The Seed Cone Eathiestrobus gen. nov.: Fossil Evidence for a Jurassic Origin of Pinaceae

The Primary Disease Gradient of Wheat Stripe Rust (Puccinia striiformis f. sp. tritici) Across Spatial Scales

The possibility of inter-transmission of tulip mosaic and iris mosaic by insect vectors, especially aphids

The parasite Aspergillus flavus Link and other fungi of the biosphere of the alkali bee Nomia melanderi Ckll., in eastern Oregon and Washington

The influence of prescribed fire on the rare endemic plant Delphinium pavonaceum (Peacock larkspur)

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Contributor

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Language

License

Location

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search