Abstracts, The Canadian Phytopathological Society, Annual Meeting, Saskatoon, Saskatchewan, June 1996

Abstract

Fire blight-like symptoms on cv. Mutsu apple caused by Pseudomonas syringae pv. papulans. W.G. Bonn. Research Centre, Agriculture and Agri-Food Canada, Harrow, Ontario NOR 1G0.

Disease losses of field crops grown under conservation tillage in NE Saskatchewan in 1994 and 1995. LA. Boyko, K.L. Bailey, and A.M. Johnston. Agriculture and Agri-Food Canada, Research Centre, Saskatoon, Saskatchewan S7N 0X2.

Wind dispersal and longevity of Colletotrkhum truncation, the cause of lentil anthracnose. L. Buchwaldt, R.A.A. Morrall, and C.C. Bernier. Department of Plant Science, University of Manitoba, Winnipeg, Manitoba R3T 2N2; and (R.A.A.M.) Department of Biology, University of Saskatchewan, 112 Science Place, Saskatoon, Saskatchewan S7N 5E2.

Inoculum production and secretion of plant cell wall degrading enzymes by Colletotrichum gloeosporioides f. sp. malvae. K.N. Byer and P.H. Goodwin. Department of Environmental Biology, University of Guelph, Guelph, Ontario NJG2W1.

Zen and the art of fungicide/biological interactions on the seed or: Make me one with Crown. S.E. Campbell and M.E. Leggett. Philom Bios Inc. 318-111 Research Drive, Saskatoon, Saskatchewan S7N 3R2.

Etiology of and cultivar response to silvertop in Kentucky bluegrass. K.F. Chang, R.J. Howard, J.J. Soroka, B.D. Gossen, D.A. Gaudet, and H.G. Najda. Crop Diversification Centre - South, Brooks, Alberta TIR 1E6; (J.J.S., B.D.G.) Agriculture and Agri-Food Canada, Research Centre, Saskatoon, Saskatchewan S7N 0X2; and (D.A.G.) Agriculture and Agri-Food Canada, Research Centre, Lethbridge, Alberta TIJ 4B1.

A comparative study of the response of wild crucifers to the blackleg fungus, Phoma lingam. C.Y. Chen and G. Séguin-Swartz. Research Centre, Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, Saskatchewan S7N 0X2.

Influence of manures on two soilborne potato diseases, verticillium wilt and potato scab. K.L. Conn and G. Lazarovits. Agriculture and Agri-Food Canada, Pest Management Research Centre, 1391 SandfordSt., London, Ontario N5V4T3.

Influence of storage conditions on the stability and shelf-life of bacterial inoculants with commercial potential and their activity towards fungal pathogens. DC. Covert, E.A. Pedersen, L.M. Funk, N. Seresinhe, M.S. Reddy, and G.L. Brown. Agrium Biologicals, 402-15 Innovation Blvd., Saskatoon, Saskatchewan S7N 2X8.

A prediction guide for deciding whether to control foliar diseases of spring wheat with fungicides. L.J. Duczek and L.L. Jones-Flory. Agriculture ° Agri-Food Canada, 107 Science Place, Saskatoon, Saskatchewan S7N 0X2.

Optimization of product delivery for a microbial inoculant, Burkholderia cepacia, for commercial use in the forestry industry. L.M. Funk, D.N. He, E.A. Pedersen, and M.S. Reddy. Agriurn Biologicals, 402-15 Innovation Blvd., Saskatoon, Saskatchewan S7N 2X8.

Relationship between environmental variables and the incidence and severity of leaf-spotting diseases of spring wheat in southern Manitoba, 1989-1993. J. Gilbert, S.M. Woods, and A. Tekauz. Agriculture and Agri-Food Canada, Cereal Research Centre, 195 Dafoe Road, Winnipeg, Manitoba R3T2M9.

Marker development for Sr39 stem rust resistance in wheat breeding lines. J.J. Gold, D.E. Harder, T.F. Townley- Smith, and J.D. Procunier. Agriculture and Agri-Food Canada, Cereal Research Centre, Winnipeg, Manitoba R3T2M9.

In planta studies of tomato seedlings colonized by Verticillium dahliae Kleb. races 1 and 2. J.J. Gold, B. Lee, and E.J. Robb. Agriculture and Agri-Food Canada, Cereal Research Centre, Winnipeg, Manitoba R3T 2M9; (B.L., E.J.R.) University ofGuelph, Guelph, Ontario NIG 2WJ.

Impact of tillage on diseases of lentil in Saskatchewan. B.D. Gossen and D. Derksen. Agriculture and Agri-Food Canada, Research Centre, 107 Science Place, Saskatoon, Saskatchewan S7N 0X2; (D.D.) P.O. Box 1000A, RR3, Brandon, Manitoba R7A 5Y3.

Transfer of blackleg resistance from Erucastrum gallicum to Brassica rapa. R.K. Gugel, G. Séguin-Swartz, and S.I. Warwick. Research Centre, Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, Saskatchewan S7N 0X2; (S.l.W.) Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, K.W. Neatby Building, C.E.F., Ottawa, Ontario K1A 0C6.

Molecular karyotypes of low temperature basidiomycetes. J. Gusse, D.A. Gaudet, and A. Laroche. Agriculture and Agri-Food Canada, Research Centre, Box 3000, Lethbridge, Alberta TU4B1.

Modification of screening methods to increase success for potential biological control agents of green foxtail. K.G. Hanson and S.M. Boyetchko. Research Centre, Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, Saskatchewan S7N 0X2.

Biological control properties of chemical compatible Pseudomonas fluorescens and Burkholderia cepacia. K.G. Hanson and M.S. Reddy. Department of Crop Science and Plant Ecology, University of Saskatchewan, Saskatoon, Saskatchewan S7N 0W0; (M.S.R.) Agrium Biologicals, 402 - 15 Innovation Blvd., Saskatoon, Saskatchewan S7N 2X8.

Inheritance of resistance to common bunt (Tilletia caries and T. foetida) in wheat. Chunlin He and G.R. Hughes. Department of Crop Science and Plant Ecology, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5A8.

Root colonization and growth promotion of various conifer species by Burkholderia cepacia strain Ral-3. D.N. He, E.A. Pedersen, L.M. Funk, and M.S. Reddy. Agrium Biologicals, 402-15 Innovation Blvd, Saskatoon, Saskatchewan S7N 2X8.

Molecular identification of four potato witches'-broom phytoplasma isolates on four potato cultivars in central Alberta. C. Hiruki, S.F. Hwang, A.H. Khadhair, and K. Wang. Department of Agriculture, Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2P5; (S.F.H.) Alberta Environmental Centre, Vegreville, Alberta T9C 1T4.

Infection of alfalfa pollen by Sclerotinia sclerotiorum. H.C. Huang, E.G. Kokko, and R.S. Erickson. Agriculture and Agri-Food Canada Research Centre, Lethbridge, Alberta TIJ 4B1.

Effects of seeding date on development of resistance to cottony snow mold (Low Temperature Basidiomycete = LTB) in orchard grass. S.F. Hwang and D.A. Gaudet. Alberta Environmental Centre, Vegreville, Alberta T9C 1T4; (D.A.G.) Agriculture and Agri-Food Canada, Research Centre, Lethbridge, Alberta TIJ 4B1.

Effect of seeding date and fungicidal seed treatments on pythium root rot in field pea. S.F. Hwang, B.D. Gossen, G.D. Turnbull, K.F. Chang, and R. J. Howard. Alberta Environmental Centre, Vegreville, Alberta T9C 1T4; (B.D.G.) Agriculture Canada Research Station, Saskatoon, Saskatchewan S7N 0X2; (K.F.C., R.J.H.) Crop Diversification Centre-South, Brooks, Alberta T1R 1E6.

Influence of burying blackleg infected canola stubble on pseudothecia formation in Leptosphaeria maculans. P.D, Kharbanda and M.J. Ostashewski. Alberta Environmental Centre, Vegreville, Alberta T9C 1T4.

The comparison of inheritance of common bunt resistance in androgenetically derived doubled haploid with random head to row populations of wheat. RE. Knox, A.L. Br¨lé-Babel, M.R, Fernandez, and R.M. De Pauw. SPARC, AAFC, Box 1030, Swift Current, Saskatchewan S9H 3X2; and (A.L.B.) Department of Plant Science, University of Manitoba, Winnipeg, Manitoba R3T 2N2.

Interaction of synthetic herbicides with Colletotrichum gloeosporioides f. sp. malvae (BioMal®) for the control of velvetleaf (Abutilon theophrasti). H.R. Kutcher, L. Morin, and J.L. Derby. Agriculture and Agri-Food Canada Research Centre, 107 Science Place, Saskatoon, Saskatchewan S7N 0X2; (L.M.) Manaaki Whenna Landcare Research, Private Bag 92170, Auckland, New Zealand.

Genetic diversity and variation for virulence of Colletotrichum gloeosporioides f. sp. malvae and other Colletotrichum spp. H.R. Kutcher and K. Mortensen. Agriculture and Agri-Food Canada, Research Centre, 107 Science Place, Saskatoon, Saskatchewan S7N 0X2.

Efficacy of fungicides for control of entomosporium leaf and berry spot of saskatoon in Alberta. R.M. Lange and P.S. Bains. Alberta Environmental Centre, Alberta Environmental Protection, Bag 4000, Vegreville, Alberta T9C 1T4; (P.S.B.) Crop Diversification Centre - North, Alberta Agriculture, Food and Rural Development, R.R. 6, Edmonton, Alberta T5B 4K3.

Organic amendments for the control of soilborne plant pathogens. G. Lazarovits and G. Kritzman. AAFC, Pest Management Research Centre., 139/ Sandford St., London, Ontario N5V 4T3; and (G.K.) ARO, Department of Plant Protection, Volcani Center, Bet Dagan, Israel.

Dispersal of ascospores of Sclerotinia sclerotiorum in canopies of flowering canola. C. Lefol and R.A.A. Morrall. Department of Biology, University of Saskatchewan, 112 Science Place, Saskatoon, Saskatchewan S7N 5E2.

Resistance to Sclerotinia sclerotiorum in a weed related to canola. C. Lefol, G. Séguin-Swartz, and R.A.A. Morrall. Department of Biology, University of Saskatchewan, 112 Science Place, Saskatoon, Saskatchewan S7N 5E2; and (G.S.-S.) Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, Saskatchewan S7N 0X2.

Tank mixing Provide® with seed-applied fungicides. M.E. Leggett and S.E. Campbell. Philom Bios Inc. 318-111 Research Drive, Saskatoon, Saskatchewan S7N 3R2.

Biocontrol of Botrytis cinerea in geranium cuttings. De- Wei Li, John C. Sutton, and Gang Peng. Department of Environmental Biology, University of Guelph, Guelph, Ontario NIG 2W1.

Use of polymerase chain reaction (PCR) for detection of Septoria nodorum on wheat stubble. S. Maynard, J. Taylor, and D. Kaminski. Department of Biology, University of Saskatchewan, Saskatoon, Saskatchewan S7N 0W0; (J.T.) National Research Council Canada, Plant Biotechnology Institute, 110 Gymnasium Place, Saskatoon, Saskatchewan S7N 0W9; and (D.K.) Saskatchewan Agriculture and Food, Regina, Saskatchewan S4S 0B1.

Production of anti-fungal compounds and inhibition of legume root-rot fungi by a Pseudomonas putida isolate. L.J. McGregor, J.H. Stephens, and K. Xi. MicroBio RhizoGen Corp., 818- 48th St. E., Saskatoon, Saskatchewan S7K 3Y4.

Infection of tomato roots by Humicola fuscoatra. J.G Menzies and D.L. Ehret. Agriculture and Agri-Food Canada, Cereal Research Centre, 195 Dafoe Road, Winnipeg, Manitoba R3T2M9; (D.L.E.) A.A.F.C, Pacific Agriculture Research Centre, Agassiz, British Columbia.

Influence of various abiotic factors related to commercial development of a microbial inoculant, Burkholderia cepacia, for use in forestry. CD. Neiser, E.A. Pedersen, and M.S. Reddy. Agrium Biologicals, 402-15 Innovation Blvd., Saskatoon, Saskatchewan S7N 2X8.

Preliminary investigations on the modes of action of biological control agents: Burkholderia cepacia strains Ral-3 and Ral-3R and Pseudomonas areofaciens strain 63-28. CL. Pastula, C.D. Neiser, L.M. Funk, E.A. Pedersen, and M.S. Reddy. Agrium Biologicals, 402-15 Innovation Blvd. Saskatoon, Saskatchewan S7H 2X8.

A potential biological control agent for damping-off and root rot diseases of multiple crops. E.A. Pedersen, L.M. Funk, and M.S. Reddy. Agrium Biologicals, 402-15 Innovation Blvd., Saskatoon, Saskatchewan S7N 2X8.

Biological control of damping-off diseases of conifers by Burkholderia cepacia strain Ral-3. E.A. Pedersen, D.N. He, CD. Neiser, and M.S. Reddy. Agrium Biologicals, 402-15 Innovation Blvd., Saskatoon, Saskatchewan S7N 2X8.

Development of a certification program which ensures proper commercial inoculation of seed with the fungal inoculant, Provide®. E. Prusinkiewicz, M. Klutz, and S, Audette. Philom Bios Inc., 318-111 Research Drive Saskatoon, Saskatchewan S7N 3R2; (S.A.) DowElanco Canada Inc. 241-111 Research Drive, Saskatoon, Saskatchewan S7N 3R2; (M.K.) DowElanco Canada Inc. Bldg. B, 9635 45th Avenue, Edmonton, Alberta T6E5Z8.

Molecular analysis of the population structure of Chondrostereum purpureum. T.D. Ramsfield, E.M. Becker, S.F. Shamoun, Z.K. Punja, and W.E. Hintz. Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia V5A 1S6; (E.M.B. and W.E.H.) Department of Biological Sciences, University of Victoria, PO Box 1700, Victoria, British Columbia V8W 2Y2; and (S.F.S.) Pacific Forestry Centre, 506 W Burnside Rd., Victoria, British Columbia V8Z 1M5.

New genes for resistance to rust in flax. K.Y. Rashid and E.O. Kenaschuk. Agriculture and Agri-Food Canada, Research Centre, Unit 100-101 Route 100, Morden, Manitoba R6M IY5.

Control of fusarium wilt in flax by fungicide seed treatment. K.Y. Rashid and E.O. Kenaschuk. Agriculture and Agri- Food Canada, Research Centre, Unit 100-101 Route 100, Morden, Manitoba R6M1Y5.

Control of seedborne ascochyta blight in field pea by fungicide seed treatment. K.Y. Rashid, T.D. Warkentin, and A.G. Xue. Agriculture and Agri-Food Canada, Research Centre, Unit 100 -101 Route 100, Morden, Manitoba R6M 1Y5.

Use of biowaste amendments to control ginseng root rots caused by Cylindrocarpon destructans and Phytophthora cactorum. R.D. Reeleder and N.I. Khan. Agriculture and Agri-Food Canada, Delhi, Ontario N4B 2W9.

Losses in Brassica rapa canola from alternaria black spot from 1988 to 1995 in Saskatchewan. E. Seidle, L.J. Duczek, and S.V. Rude. Box 146, Medstead, Saskatchewan SOM 1W0; (L.J.D.) Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, Saskatchewan S7N 0X2; (S.V.R.) Discovery Seed Labs Ltd., #4-1527 Ontario Avenue, Saskatoon, Saskatchewan S7K 1S7.

Suppression of rhizoctonia stem rot on poinsettias with Pseudomonas aureofaciens, strain 63-28. N. Seresinhe, A.A. Reyes, and G.L. Brown. Agrium Biologicals, 402-15 Innovation Blvd., Saskatoon, Saskatchewan S7N 2X8; (A.A.R.) Agriculture and Agri-Food Canada, Vineland Station, Ontario LOR 2E0.

Nature of potato spindle tuber viroid transmission by aphids in association with potato leafroll virus. R.P. Singh, J. Kurz, and M. Singh. Agriculture and Agri-Food Canada, Research Centre, P.O. Box 20280, Fredericton, New Brunswick E3B 4Z7.

Molecular technologies for virus detection in aphids and dormant tubers. R.P. Singh, M. Singh, and J. Kurz. Agriculture and Agri-Food Canada, Research Centre P.O. Box 20280, Fredericton, New Brunswick, E3B 4Z7.

Resistance of some fine turf grasses to snow molds and their recovery in golf turf in Saskatchewan. J. Drew Smith and D. Moroz. Department of Horticulture Science, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5A8.

Factors affecting silvertop incidence in grass seed fields in western Canada. J.J. Soroka, B.D. Gossen, K.F. Chang, and R.J. Howard. Agriculture and Agri-Food Canada, Saskatoon Research Centre, 107 Science Place, Saskatoon, Saskatchewan S7N 0X2; and (K.F.C. and R.J.H.) Crop Diversification Centre - South, Brooks, Alberta T1R 1E6.

Molecular detection of Ascochyta fabae f. sp. lentis in lentil seed. J.N. Tranberg, J. Taylor, and R.A.A. Morrall. Department of Biology, 112 Science Place, University of Saskatchewan, Saskatoon, Saskatchewan, S7N5E2; (J.T.) National Research Council Canada, Plant Biotechnology Institute, 110 Gymnasium Place, Saskatoon, Saskatchewan S7N 0W9.

Yield loss as a result of brown girdling root rot of canola. T.K. Turkington and D.L. Woods. Alberta Agriculture Food and Rural Development, Lacombe, Alberta T4L IWI; and (D.L.W.) Agriculture and Agri-Food Canada, Beaverlodge, Alberta TOH 0C0.

Brown girdling root rot of canola: inoculum density/disease severity relationships. T.K. Turkington and D.L. Woods. Alberta Agriculture Food and Rural Development, Lacombe, Alberta T4L 1W1; and (D.L.W.) Agriculture and Agri- Food Canada, Beaverlodge, Alberta TOH 0C0.

Growth and survival of Tilletiopsis pallescens, a potential biological control agent of Sphaerotheca fuliginea, on healthy and S. /u/igmea-infected cucumber leaves. E.J. Urquhart and Z.K. Punja. Centre for Pest Management, Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia V5A 1S6.

Cultural practices to reduce the incidence of phytophthora crown and root rot of apple trees. R.S. Utkhede. Agriculture and Agri-Food Canada, Research Centre, Summerland, British Columbia VOH 7Z0.

The molecular stability of genomic DNA of phytoplasma in the witches'-broom-affected paulownia tissues after microwave heat treatment. K. Wang, AH. Khadhair, and C. Hiruki. Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2P5.

Genetic relatedness of phytoplasmas occurring in paulownia and jujube in Asia. K. Wang, A.-H. Khadhair, C. Hiruki, S.S. Han, and K. Jin. Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2P5; (K.J.) Institute of Forest Protection, Chinese Academy of Forestry, Beijing, P.R.China 100091.

Novel fungicidal metabolites derived from bacterial culture. C. Xu, G. Chen, J. Li, and J.M. Webster. Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia V5A 1S6.

Effect of timing of infection by Mycosphaerella pinodes on yield and seed quality of field pea. A.G. Xue, T.D. Warkentin, and E.O. Kenaschuk. Agriculture and Agri-Food Canada, Morden Research Centre, Morden, Manitoba R6M 1Y5.

Determining resistance and susceptibility of barley cultivars at the seedling stage to net blotch caused by Pyrenophora teres. K. Xi and P.A. Burnett. Agriculture and Agri-Food Canada, Lacombe Research Centre, Lacombe, Alberta T4L 1W1; (P.A.B.) Lethbridge Research Centre, Lethbridge, Alberta TIJ 4B1.

Inhibitory effect of a biocontrol agent (Bacillus sp.) against Leptosphaeria maculans in vitro and in vivo. J. Yang, P.D. Kharbanda, and J.P. Tewari. Alberta Environmental Centre, Vegreville, Alberta T9C 1T4; (J.P.T.) Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2P5.

Patterns of propagule density of Gliocladium roseum on raspberry in relation to biological control of Botrytis cinerea. H. Yu and J.C. Sutton. Department of Environmental Biology, University of Guelph, Guelph, Ontario NIG 2W1.