The Canadian Phytopathological Society Annual Meeting, Waterton Lakes National Park, Alberta, 2002

Abstract

Suppression of seedling damping-off diseases and promotion of plant growth with fish emulsion-amended planting mix. P.A. Abbasi, K.L. Conn, and G. Lazarovits. Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, 1391 Sandford Street, London, ON N5V 4T3, Canada. Winter wheat resistant to the vector of Wheat streak mosaic virus: a fifty year chronicle. T.G. Atkinson (retired), R.J. Graf, J.B. Thomas, and R.L. Conner. Lethbridge Research Centre, Agriculture and Agri-Food Canada, P.O. Box 3000, Lethbridge, AB T1J 4B1, Canada; (J.B.T.) Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada; and (R.L.C.) Morden Research Station, Agriculture and Agri- Food Canada, Unit 100–101, Route 100, Morden, MB R6M 1Y5, Canada. Towards the identification of genes expressed differentially in Andigena potato lines resistant to late blight. P. Audy, T. Somerville, R. Tarn, and A. Murphy. Potato Research Centre, Agriculture and Agri-Food Canada, 850 Lincoln Road, P.O. Box 20 280, Fredericton, NB E3B 4Z7, Canada. Differences in susceptibility of wheat classes and other small grains to take-all disease under irrigation in Saskatchewan. K.L. Bailey and B. Irvine. Saskatoon Research Centre, Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK S7N 0X2, Canada; and (B.I.) Brandon Research Centre, Agriculture and Agri-Food Canada, P.O. Box 1000, R.R. 3, Brandon, MB R7A 5Y3, Canada. BAS 510 F: a new broad-spectrum fungicide for use on fruit and vegetable crops and turfgrass. W. Barton and S.R. Chapman. BASF Canada, Toronto, ON M9W 6N9, Canada. Effects of 1-MCP on postharvest decay of apples caused by Penicillium expansum and Botrytis cinerea. K.E. Bedford, S.C. Stokes, P.L. Sholberg, and O.L. Lau. Pacific Agri- Food Research Centre, Agriculture and Agri-Food Canada, 4200 Highway 97, Summerland, BC V0H 1Z0, Canada; and (O.L.L.) Industry Research Program, Okanagan Federated Shippers Association, c/o Pacific Agri-Food Research Centre, Agriculture and Agri-Food Canada, 4200 Highway 97, Summerland, BC V0H 1Z0, Canada. Biological control of fusarium head blight with Paenibacillus polymyxa PKPB1. D. Benard, F.M. Holowenko, and P. Kharbanda. Alberta Research Council, Bag 4000, Vegreville, AB T9C 1T4, Canada. Amendment of soil with dried leaves of Piper aduncum suppresses fusariosis and increases growth in black pepper. R.L. Benchimol, J.C. Sutton, C.N. Bastos, and M.B. Dias-Filho. Embrapa Eastern Amazonia, Caixa Postal 48, 66017-970, Belém, PA, Brazil; (J.C.S.) Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W3, Canada; and (C.N.B.) Comissäo Executiva do Plano da Lavoura Cacaueira – Superintendência Regional da Amazônia Oriental, C.P. 1801, Belém, PA, Brazil. Effect of Microsphaeropsis ochraceaon the production of airborne and sclerotia-borne conidia of Botrytis squamosa. O. Carisse, M. Tremblay, and D. Rolland. Horticultural Research and Development Centre, Agriculture and Agri-Food Canada, 430 Gouin Boulevard, Saint-Jean-sur-Richelieu, QC J3B 3E6, Canada. Effect of soil temperature, seeding date, and seeding depth on chickpea sown in soil infested with Rhizoctonia solani. K.F. Chang, S.F. Hwang, B.D. Gossen, G.D. Turnbull, R.J. Howard, and S.F. Blade. Crop Diversification Centre South, SS4, Brooks, AB T1R 1E6, Canada; (S.F.H., G.D.T.) Alberta Research Council, Vegreville, AB T9C 1T4, Canada; (B.D.G.) Saskatoon Research Centre, Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK S7N 0X2, Canada; and (S.F.B.) Crop Diversification Centre North, Edmonton, AB T5B 4K3, Canada. BAS 510 F: a new broad-spectrum fungicide for use in canola and pulse crops. S.R. Chapman, M. Kuchuran, J. Bertholet, and W. Barton. BASF Canada, Toronto, ON M9W 6N9, Canada. Application time influences ability of Pseudomonas chlororaphis Tx-1 to suppress root rot caused by Pythium aphanidermatum in hydroponic pepper plants. S. Chatterton, J.C. Sutton, G.J. Boland, and B. Grodzinski. Department of Environmental Biology, University of Guelph, Guelph, ON N1G 2W1, Canada; and (B.G.) Department of Plant Agriculture, University of Guelph, Guelph, ON N1G 2W1, Canada. Reduction of potato scab in two Prince Edward Island potato fields with organic soil amendments. K.L. Conn, G. Lazarovits, N. Soltani, W. Kelly, A. Hicken, and E. MacMillan. Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, 1391 Sandford Street, London, ON N5V 4T3, Canada; and (W.K., A.H., E.M.) McCain Fertilizers Limited, Middleton Plant, P.O. Box 117, Kinkora, PE C0B 1N0, Canada. Biocontrol of potato late blight using beneficial bacteria. F. Daayf, L. Adam, and D. Fernando. Department of Plant Science, 222 Agriculture Building, The University of Manitoba, Winnipeg, MB R3T 2N2, Canada. Detection of the mycoherbicide Velgo® in velvetleaf field soil using strain-specific primers. A.L. Dauch, A.K. Watson, and S.H. Jabaji-Hare. Department of Plant Science, McGill University, 21 111 Lakeshore Road, Sainte-Anne-de- Bellevue, QC H9X 3V9, Canada. The effect of microbial interactions on sclerotia viability. R.W. Duncan, W.G.D. Fernando, and K.Y. Rashid. Department of Plant Science, The University of Manitoba, Winnipeg, MB R3T 2N2, Canada; and (K.Y.R.) Cereal Research Centre, Agriculture and Agri-Food Canada, Morden Research Station, Unit 100–101, Route 100, Morden, MB R6M 1Y5, Canada. Management of clubroot disease of cauliflower. J.F. Elmhirst, K. Zimmerman, and V.R. Brookes. Elmhirst Diagnostics and Research, 5727 Riverside Street, Abbotsford, BC V4X 1T6, Canada; (K.Z.) B.C. Ministry of Agriculture, Food and Fisheries, 1767 Angus Campbell Road, Abbotsford, BC V3G 2M3, Canada; and (V.R.B.) Pacific Agriculture Research Centre, Agriculture and Agri-Food Canada, P.O. Box 1000, Agassiz, BC V0M 1A0, Canada. In-vitro selection for resistance to fusarium head blight in wheat anther culture: field evaluation under artificial infection. F. Eudes, J. Collin, S. Rioux, and A. Comeau. Lethbridge Research Centre, Agriculture and Agri-Food Canada, P.O. Box 3000, Lethbridge, AB T1J 4B1, Canada; (J.C.) Département de phytologie, Université Laval, Sainte- Foy, QC G1K 7P4, Canada; (S.R.) Centre de recherche sur les grains, 2700, rue Einstein, Saint-Bruno-de-Montarville, QC G1P 3W8, Canada; and (A.C.) Soils and Crops Research and Development Centre, Agriculture and Agri-Food Canada, 2560 Hochelaga Boulevard, Sainte-Foy, QC G1V 2J3, Canada. Evaluation of fusarium head blight resistance in Italian wheat germplasm. F. Eudes, T. Curtis, R. Graf, R.S. Sadasivaiah, and M. Cattaneo. Lethbridge Research Centre, Agriculture and Agri-Food Canada, P.O. Box 3000, Lethbridge, AB T1J 4B1, Canada; and (M.C.) Istituto Sperimentale per la Cerealicoltura, Via Mulino, S. Angelo Lodigiani (LO), 3-26866, Italy. Phyllosphere microbial interactions with Fusarium graminearum. W.G.D. Fernando, Y. Chen, and P. Parks. Department of Plant Science, The University of Manitoba, Winnipeg, MB R3T 2N2, Canada. Genetic analysis of Fusarium graminearum isolated from wheat, barley, and corn. W.G.D. Fernando, R. Ramarathnam, J. Gilbert, and R. Clear. Department of Plant Science, The University of Manitoba, Winnipeg, MB R3T 2N2, Canada; (J.G.) Cereal Research Centre, Agriculture and Agri-Food Canada; 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada; and (R.C.) Canadian Grain Commission, 600–303 Main Street, Winnipeg, MB R3C 3G8, Canada. Novel stem-rust resistance genes in accessions of wild Avenae spp. T. Fetch and J. Gold. Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada. Confocal laser scanning microscopy study of potato colonized with Erwinia carotovora subsp. atroseptica. D. Fujimoto and F. Leggett. Lethbridge Research Centre, Agriculture and Agri-Food Canada, P.O. Box 3000, Lethbridge, AB T1J 4B1, Canada. new leaf spot of barley in Uruguay caused by Drechslera gigantea. F. Gamba and A. Tekauz. Facultad de Agronomía, Universidad de la República Oriental del Uruguay; and (A.T.) Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada. A multiplex polymerase chain reaction analysis with species specificity for the Neofabraea complex associated with anthracnose and perennial cankers and bull’s eye rot of apple and pear fruit.T.D. Gariepy, R. Spotts, D. Sugar, J.L. Henriquez, C.A. Lévesque, and J.E. Rahe. Centre for Environmental Biology, Department of Biological Sciences, Simon Fraser University, Burnaby, BC V5A1S6, Canada; (R.S.) Oregon State University, Mid-Columbia Agricultural Research and Extension Center, Hood River, OR 97031, U.S.A.; (D.S., J.L.H.) Oregon State University, Southern Oregon Research and Extension Center, Medford, OR 97502, U.S.A.; and (C.A.L.) Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, Ottawa, ON K1A 0C6, Canada. Potato gene expression during infection of tuber by Streptomyces scabies. C. Goyer, P. Audy, H. De Jong, A. Murphy, G. Tai, and R. Tarn. Potato Research Centre, Agriculture and Agri-Food Canada, P.O. Box 20 280, 850 Lincoln Road, Fredericton, NB E3B 4Z7, Canada. Effect of crop rotation and tillage on black-leg disease of canola. X.W. Guo, W.G.D. Fernando, and M. Entz. Department of Plant Science, The University of Manitoba, Winnipeg, MB R3T 2N2, Canada. Tomato disease resistance Ve genes encode cell surface receptors. J. Hachey, F. Kulcsar, D. Prüfer, F. Leggett, and L.M. Kawchuk. Lethbridge Research Centre, Agriculture and Agri-Food Canada, P.O. Box 3000, Lethbridge, AB T1J 4B1, Canada; and (D.P.) Department of Applied Genomics, Fraunhofer Institut für Umweltchemie und Ökotoxicologie, Auf dem Aberg 1, 57392, Schmallenberg, Germany. In-vitro growth of fusarium head blight fungi as affected by glyphosate-based herbicides. K.G. Hanson and M.R. Fernandez. Semiarid Prairie Agricultural Research Centre, Agriculture and Agri-Food Canada, Airport Road, P.O. Box 1030, Swift Current, SK S9H 3X2, Canada. Evaluation of potential biocontrol bacteria screened for reduction of fusarium head blight inoculum. K.G. Hanson and M.R. Fernandez. Semiarid Prairie Agricultural Research Centre, Agriculture and Agri-Food Canada, Airport Road, P.O. Box 1030, Swift Current, SK S9H 3X2, Canada. Characterization of novel wheat leaf rust resistance genes. C. Hiebert, B. McCallum, and J. Thomas. Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada. Assessing Entomosporium mespili inoculum potential on infected Amelanchier alnifolia leaves. Q.A. Holtslag, L. Lamari, W.R. Remphrey, W.G.D. Fernando, R. Dill-Macky, and R.G. St-Pierre. Department of Plant Science, Faculty of Agricultural and Food Sciences, The University of Manitoba, Winnipeg, MB R3T 2N2, Canada; (R.D.-M.) Department of Plant Pathology, University of Minnesota, College of Agricultural, Food, and Environmental Sciences, St. Paul, MN 55108-6030, U.S.A.; and (R.G.S.-P.) Department of Plant Sciences, Native Fruit Development Program, University of Saskatchewan, Saskatoon, SK S7N 5A8, Canada. Evidence of the sexual state of Mycosphaerella graminicola in Manitoba, Canada. C. Hoorne, L. Lamari, J. Gilbert, and G.M. Ballance. Department of Plant Science, The University of Manitoba, Winnipeg, MB R3T 2N2, Canada; and (J.G.) Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada. Impact of pink pea disease on seed size, seedling emergence, and growth vigor. H.C. Huang and R.S. Erickson. Lethbridge Research Centre, Agriculture and Agri-Food Canada, P.O. Box 3000, Lethbridge, AB T1J 4B1, Canada. Major gene resistance to white pine blister rust in British Columbia. R.S. Hunt. Canadian Forest Service, Pacific Forestry Centre, 506 W. Burnside Road, Victoria, BC V8Z 1M5, Canada. The effect of antagonistic organisms on the control of Gibberella zeae. S. Inch and J. Gilbert. Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada. Expression of influenza A subtype H1N1 hemagglutinin vaccine in potato (Solanum tuberosum).F. Kulcsar, L.P. Nagata, J. Wong, K. Toohey, and L.M. Kawchuk. Lethbridge Research Centre, Agriculture and Agri-Food Canada, P.O. Box 3000, Lethbridge, AB T1J 4B1, Canada; and (L.P.N., J.W.) Defence Research Establishment Suffield, P.O. Box 4000, Medicine Hat, AB T1A 8K6, Canada. The wheat stripe rust resistance gene Yr10 . A. Laroche, F. Eudes, M.M. Frick, R. Huel, C.L Nykiforuk, R.L. Conner, A. Kuzyk, Q. Chen, M. Jordan, and S.N. Acharya. Lethbridge Research Centre, Agriculture and Agri-Food Canada, P.O. Box 3000, Lethbridge AB, T1J 4B1, Canada; (R.L.C.) Morden Research Station, Agriculture and Agri- Food Canada, Unit 100–101, Route 100, Morden, MB R6M 1Y5, Canada; and (M.J.) Cereal Research Centre, Agriculture and Agri-Food Canada, 95 Dafoe Road, Winnipeg, MB R3T 2M9, Canada Development of a genetically marked strain of Streptomyces scabies and identification of pathogenic S. scabies from soil using polymerase chain reaction primers. G. Lazarovits, J. Kers, C. de Lasa, and K.L. Conn. Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, 1391 Sandford Street, London, ON N5V 4T3, Canada; and (J.K.) Department of Plant Pathology, Cornell University, Ithaca, NY 14853-5908, U.S.A. Infection of the introduced weed houndstongue (Cynoglossum officinale) by lettuce mosaic potyvirus. F.L. Leggett, S.M. Little, M. Bernardy, R.L. Conner, and R. DeClerck-Floate. Lethbridge Research Centre, Agriculture and Agri-Food Canada, P.O. Box 3000, Lethbridge, AB T1J 4B1, Canada; (M.B.) Pacific Agri-Food Research Centre, Agriculture and Agri-Food Canada, 4200 Highway 97, Summerland, BC V0H 1Z0, Canada; and (R.L.C.) Morden Research Station, Agriculture and Agri-Food Canada, Unit 100–101, Route 100, Morden, MB R6M 1Y5, Canada. Segregation patterns for integration and expression of Coniothyrium minitans xylanase gene in Arabidopsis thalianatransformants. Z.-X. Lu, A. Laroche, and H.C. Huang. Lethbridge Research Centre, Agriculture and Agri- Food Canada, P.O. Box 3000, Lethbridge, AB T1J 4B1, Canada. Late-blight [Phytophthora infestans] development in potato tubers as influenced by temperature, duration of wetness, and storage time. L.H. Lui and A.C. Kushalappa. Department of Plant Science, McGill University, 21 111 Lakeshore Road, Sainte-Anne-de-Bellevue, QC H9X 3V9, Canada. Characterization of Phytophthora infestans isolates from Alberta. J.R. Lynn, M.J. Kokko, P. Bains, B. Lee, and L.M. Kawchuk. Lethbridge Research Centre, Agriculture and Agri-Food Canada, P.O. Box 3000, Lethbridge, AB T1J 4B1, Canada; and (P.B.) Alberta Agriculture Food and Rural Development, Main Floor, Administration Building (CDC North) R.R. 6, 17 507 Fort Road, Edmonton, AB T5B 4K3, Canada. Positional cloning of the locus Avr1a from Phytophthora sojae. T. MacGregor, Y. Cui, B. Tyler, M. Bhattacharyya, and M. Gijzen. Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, 1391 Sandford Street, London, ON N5V 4T3, Canada; (B.T.) Department of Plant Pathology, University of California, Davis, CA 95616, U.S.A.; and (M.B.) G303 Agronomy Hall, Iowa State University, Ames, IA 50011-1010, U.S.A. Virulence frequency increase to wheat leaf rust resistance gene Lr16 within Puccinia triticina from western Canada. B.D. McCallum and P. Seto-Goh. Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada. Impact of seed source and production type on Potato leafroll virus and Potato virus Y in the Manitoba potato crop. D.L. McLaren, R.P. Singh, J.E. Gavloski, B. Elliott, R.B. Curle, and K.M. Volkmar. Brandon Research Centre, Agriculture and Agri-Food Canada, 18th Street North and Grand Valley Road, Brandon, MB R7A 5Y3, Canada; (R.P.S.) Potato Research Centre, Agriculture and Agri-Food Canada, P.O. Box 20 280, 850 Lincoln Road, Fredericton, NB E3B 4Z7, Canada; and (J.E.G., B.E., R.B.C.) Manitoba Agriculture and Food, Soils and Crops Branch, Box 1149, Carman, MB R0G 0J0, Canada. The use of inter-simple sequence repeats and amplified fragment length polymorphisms to analyze genetic relationships among Ustilago spp. J.G. Menzies, G. Bakkeren, F. Matheson, J.D. Procunier, and S. Woods. Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada; and (G.B.) Pacific Agri-Food Research Centre, Agriculture and Agri- Food Canada, 4200 Highway 97, Summerland, BC V0H 1Z0, Canada. Evidence of an active role of silicon in resistance of wheat to powdery mildew. J.G. Menzies, N. Benhamou, and R.R. Bélanger. Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada; and (N.B., R.R.B.) Département de phytologie, Faculté des sciences de l’agriculture et de l’alimentation, Université Laval, Sainte-Foy, QC G1K 7P4, Canada. Virulence of Ustilago tritici collected from hexaploid wheat (Triticum aestivum)in Canada; 1964–1998. J.G. Menzies, R.E. Knox, J. Nielsen, and P.L. Thomas. Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada; (R.E.K.) Semiarid Prairie Agriculture Research Centre, Agriculture and Agri-Food Canada, Box 1030, Swift Current, SK S9H 3X2, Canada. Virulence of Ustilago tritici collected from durum wheat (Triticum turgidum var. durum) in Manitoba and Saskatchewan; 1965–1998. J.G. Menzies, R.E. Knox, J. Nielsen, and P.L. Thomas. Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada; and (R.E.K.) Semiarid Prairie Agriculture Research Centre, Agriculture and Agri-Food Canada, Box 1030, Swift Current, SK S9H 3X2, Canada Potential of salt compounds for control of postharvest tuber diseases of potato. A.A.S. Mills, H.W. Platt, and R.A.R. Hurta. Crops and Livestock Research Centre, Agriculture and Agri-Food Canada, 440 University Avenue, Charlottetown, PE C1A 4N6, Canada; and (R.A.R.H.) Department of Biology, University of Prince Edward Island, 550 University Avenue, Charlottetown, PE C1A 4P3, Canada. Segregation for avirulence in four F2 populations of wheat leaf rust fungus Puccinia triticina. B. Mulock and B. McCallum. Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada. A new approach for the simultaneous differentiation of biological and geographical strains of Potato virus Y by competitive multiplex reverse transcription – polymerase chain reaction. X. Nie and R.P. Singh. Potato Research Centre, Agriculture and Agri-Food Canada,850 Lincoln Road, P.O. Box 20 280, Fredericton, NB E3B 4Z7, Canada. Development of a comprehensive diagnostic system for apple diseases using a DNA array. D. O’Gorman, P. Sholberg, K. Bedford, and C.A. Lévesque. Pacific Agri-Food Research Centre, Agriculture and Agri-Food Canada, 4200 Highway 97, Summerland, BC VOH 1Z0, Canada; and (C.A.L.) Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, 930 Carling Avenue, Ottawa, ON K1A 0C6, Canada. The effect of site-preparation wounds on aspen quality. J.M. Pankuch, P.V. Blenis, V.J. Lieffers, and K.I. Mallett. Department of Renewable Resources, University of Alberta, 751 General Services Building, Edmonton, AB T6G 2H1, Canada; (V.J.L.) Department of Renewable Resources, University of Alberta, 442 Earth Sciences Building, Edmonton, AB T6G 2H1, Canada; and (K.I.M.) Northern Forestry Centre, Canadian Forest Service, 5320–122 Street, Edmonton, AB T6H 3S5, Canada. Evaluation of plant pathogens for biocontrol of scentless chamomile in western Canada. G. Peng, K.L. Bailey, and H.L. Hinz. Saskatoon Research Centre, Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK S7N 0X2, Canada; and (H.L.H.) CABI Bioscience Switzerland Center, CABI International, 1, rue des Grillons, Ch-2800 Delémont, Switzerland. The use of virulence and amplified fragment length polymorphism data to measure genetic diversity of Ustilago tritici collected by two sampling methods. Z. Popovic and J.G. Menzies. Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada. Doubled-haploid technology: homozygous populations to provide consistent phenotypes for study of fusarium head blight resistance and barley yellow dwarf tolerance in spring wheat. M.P. Pradhan, J. Gilbert, and S. Haber. Department of Botany, The University of Manitoba, Winnipeg, MB R3T 2N2, Canada; and (J.G., S.H.) Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada. Identification and characterization of a Phytophthora sojae necrosis inducing peptide expressed during necrotrophic phase of disease development. D. Qutob, S. Kamoun, B. Tyler, and M. Gijzen. Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, 1391 Sandford Street, London, ON N5V 4T3, Canada; (S.K.) Department of Plant Pathology, The Ohio State University, Ohio Agricultural and Development Center, Wooster, OH 44691, U.S.A; and (B.T.) Department of Plant Pathology, University of California, Davis, CA 95616, U.S.A. Genetic resistance to powdery mildew in flax. K.Y. Rashid and S.D. Duguid. Morden Research Station, Agriculture and Agri-Food Canada, Unit 100–101, Route 100, Morden, MB R6M 1Y5, Canada. Resistance to sclerotinia wilt in wild sunflower species. K.Y. Rashid and G. Seiler. Morden Research Station, Agriculture and Agri-Food Canada, Unit 100–101, Route 100, Morden, MB R6M 1Y5, Canada; and (G.S.) USDA, Northern Crop Science Laboratory, University Station, Fargo, ND 58105, U.S.A. A resistance gene to Albugo candida (RAC1) from Arabidopsis is a member of TIR–NB–LRR class of resistance genes. S.R. Rimmer and M.H. Borhan. Saskatoon Research Centre, Agriculture and Agri-Food Canada, 107 Science Crescent, Saskatoon, SK S7N 0X2, Canada. Mapping resistance genes to Leptosphaeria maculans in Brassica napus. S.R. Rimmer, F.Q. Yu, G. Ardiel, and D.J. Lydiate. Saskatoon Research Centre, Agriculture and Agri- Food Canada, 107 Science Place, Saskatoon, SK S7N 0X2, Canada. Possible escape of potato virus Y recombinant strain (PVYN:O) through the serological indexing of certified seed in North America. R.P. Singh, D.L. McLaren, X. Nie, and M. Singh. Potato Research Centre, Agriculture and Agri-Food Canada, 850 Lincoln Road, P.O. Box 20 280, Fredericton, NB E3B 4Z7, Canada; (D.L.M.) Brandon Research Centre, Agriculture and Agri-Food Canada, P.O. Box 1000A, R.R. 3, Brandon, MB R7A 5Y3, Canada; and (M.S.) Agricultural Certification Services, 245 Hilton Road, Fredericton, NB E3B 7B5, Canada. Storage of scabby wheat: Fusarium goes away, deoxynivalenol doesn’t. R.W. Stack and H.H. Casper. Department of Plant Pathology, North Dakota State University, Fargo, ND 58105, U.S.A.; and (H.H.C.) Department of Veterinary Science and Microbiology, North Dakota State University, Fargo, ND 58105, U.S.A. BAS 510 F – product profile of a new multipurpose fungicide for field and specialty crops. R. Stierl, E. Ammermann, K. Eicken, N. Götz, T. Grote, A. Harreus, G. Lorenz, H. Rang, K. Schelberger, and M. Scherer. BASF AG, Agricultural Center, 67 114 Limburgerhof; and (K.E., N.G., T.G., A.H., H.R.) Main Laboratory, 67 056 Ludwigshafen, Germany. Occurrence and expression of ToxB among races of Pyrenophora tritici-repentis. S.E. Strelkov, L. Lamari, and G.M. Ballance. Department of Plant Science, The University of Manitoba, Winnipeg, MB R3T 2N2, Canada; and (G.M.B.) Cereal Research Centre, Agriculture and Agri- Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada. Influence of several morphological traits on fusarium head blight symptoms and deoxynivalenol content in winter wheat (Triticum aestivum). L. Tamburic-Ilincic, G. Fedak, D.E. Falk, and A.W. Schaafsma. Ridgetown College, University of Guelph, Ridgetown, ON, Canada; (G.F.) Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, 930 Carling Avenue, Ottawa, ON K1A 0C5, Canada; and (D.E.F.) Department of Plant Agriculture, University of Guelph, Guelph, ON, Canada. Fusarium species causing fusarium head blight and oat kernel infestation in western Canada. A. Tekauz. Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada. Biological control of pythium damping-off of Echinacea angustifolia with Trichoderma and Bacillus spp. Y. Yang, K.F. Chang, S.F. Hwang, S.F. Blade, N.W. Callan, and R.J. Howard. Tianjin Institute of Plant Protection, Xiqing District, Tianjin 300 112, China; (K.F.C., R.J.H.) Crop Diversification Centre South, SS4, Brooks, AB T1R 1E6, Canada; (S.F.H.) Alberta Research Council, Vegreville, AB T9C 1T4, Canada; (S.F.B) Crop Diversification North, Edmonton, AB T5B 4K3, Canada; and (N.W.C.) Western Agricultural Research Center, Montana State University, Corvallis, MT 59828, U.S.A. Infection process of Plectosporium tabacinum on false cleavers (Galium spurium). W. Zhang, K. McKee, M. Sulz, T. Mykietiak, and X. Li. Alberta Research Council, P.O. Bag 4000, Vegreville, AB T9C 1T4, Canada; and (K.M.) Department of Biological Sciences, University of Alberta, Edmonton, AB T6C 2E9, Canada.