Index Catalog // ScholarsArchive@OSU

Creator:: Smiley, Richard W. and Yan, Guiping
Abstract:: The cereal cyst nematode Heterodera avenae suppresses wheat production in the western United States. A second species of cereal cyst nematode, H. filipjevi, was identified in eastern Oregon during 2008. This paper reports the discovery of H. filipjevi–infested fields in eastern Washington, thereby extending the known distribution of H. filipjevi...
Resource Type:: Article
Full Text:: Richard W. Smiley and Guiping Yan1, Oregon State University, Columbia Basin Agricultural Research Center

Creator:: Smiley, Richard W. and Yan, Guiping
Abstract:: Cereal cyst nematodes reduce yields of wheat, barley, and oats in the Pacific Northwest states of Idaho, Oregon, and Washington. It is estimated that these pests reduce wheat profitability in these states by at least $3.4 million annually. This publication describes the distribution, biology, damage, management, and detection of cereal...
Resource Type:: Technical Report
Full Text:: Cereal Cyst Nematodes Biology and management in Pacific Northwest wheat, barley, and oat crops Richard W

Creator:: Smiley, Richard W. and Marshall, Juliet M.
Abstract:: The cereal cyst nematode Heterodera avenae reduces wheat yield in the Pacific Northwest. Resistance and tolerance traits among spring wheat cultivars were poorly defined. Screening trials were conducted with 39 cultivars over a 2-yr period in irrigated commercial fields that were infested by H. avenae. Comparisons were made between drill...
Resource Type:: Article
Full Text:: in Spring Wheat Richard W. Smiley, Oregon State University, Columbia Basin Agricultural Research

Creator:: Marshall, Juliet M. and Smiley, Richard W.
Abstract:: Heterodera avenae is a cereal cyst nematode that reduces wheat yields in the Pacific Northwest USA. Barley is also susceptible but there were no previous reports of resistance or tolerance to H. avenae in the USA. Spring barley cultivars were assayed in H. avenae-infested fields over two years. Cultivars were...
Resource Type:: Article
Full Text:: , University of Idaho, Cereals Research and Extension Program, Idaho Falls, ID 83404; and Richard W. Smiley

Creator:: Haddadi, Fatima, Mokabli, Aissa, and Smiley, Richard W.
Abstract:: Heterodera avenae is widely distributed in areas where most cereal crops are produced in Algeria. However, the virulence of the Algerian populations of this nematode on individual cereal species and cultivars has not been well documented. The virulence of H. avenae populations from Tiaret and from Oued Smar were tested...
Resource Type:: Article
Full Text:: 1 , Aïssa MOKABLI 2 , and Richard W. SMILEY 3 1 Faculté des Sciences Biologiques

Creator:: Thompson, Alison L., Smiley, Richard W., and Garland-Campbell, Kim
Abstract:: LouAu (Louise/IWA8608077) (MP-7, NSL 511036) is a wheat (Triticum aestivum L.) recombinant inbred line population developed by the USDA-ARS, with Oregon State and Washington State Universities, from a cross between the soft white spring cultivar Louise and the white facultative Iranian landrace IWA8608077. The population was developed by single seed...
Resource Type:: Article
Full Text:: /IWA8608077) Wheat Recombinant Inbred Line Mapping Population Alison L. Thompson, Richard W. Smiley, and Kim

Creator:: Yan, Guiping, Smiley, Richard W., and Okubara, Patricia A.
Abstract:: The root-lesion nematode Pratylenchus (hornet is one of the most important pests restricting productivity of wheat in the Pacific Northwest (PNW). It is laborious and difficult to use microscopy to count and identify the nematodes in soils. A SYBR Green I-based real-time polymerase chain reaction (PCR) assay was developed to...
Resource Type:: Article
Full Text:: Pratylenchus thornei in DNA Extracted from Soil Using Real-Time PCR Guiping Yan, Richard W. Smiley, and

Creator:: Oregon State University. Extension Service and Smiley, Richard W.
Abstract:: Nematodes are roundworms with complex organ systems. They occur worldwide in all environments. Most species benefit agriculture by contributing to decomposition of organic matter and are important members of the food chain. Some species are parasitic to plants or animals. More than 2,000 of the 20,000 identified nematode species are...
Resource Type:: Technical Report
Full Text:: Nematodes Affecting Wheat Yield in the Pacifi c Northwest R. Smiley Richard Smiley, professor of plant

Creator:: Thompson, Alison L., Smiley, Richard W., Paulitz, Timothy C., and Garland-Campbell, Kim
Abstract:: The pathogenic nematodes Pratylenchus neglectus (Rensch, 1924) Filipjev and Schuurmans Stekhoven, 1941 and Pratylenchus thornei Sher and Allen, 1953 cause severe yield losses in wheat (Triticum aestivum L.). The objectives in this study were to assay a collection of Iranian landrace accessions collected from 12 provinces in Iran to identify...
Full Text:: Esfahan IWA8604710 D 2 W. Azerbaijan‡ IWA8606188 B 2 W. Azerbaijan IWA8606229 B 2 W. Azerbaijan

Creator:: Thompson, Alison L., Smiley, Richard W., Paulitz, Timothy C., and Garland-Campbell, Kim
Abstract:: The pathogenic nematodes Pratylenchus neglectus (Rensch, 1924) Filipjev and Schuurmans Stekhoven, 1941 and Pratylenchus thornei Sher and Allen, 1953 cause severe yield losses in wheat (Triticum aestivum L.). The objectives in this study were to assay a collection of Iranian landrace accessions collected from 12 provinces in Iran to identify...
Full Text:: neglectus and Pratylenchus thornei in Iranian Landrace Accessions of Wheat Alison L. Thompson,* Richard W

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