Semiarid Prairie Agricultural Research Centre Research Articles

Bridgeview alfalfa

Acharya, S. N. and Steppuhn, H. 2012. Bridgeview alfalfa. Can. J. Plant Sci. 92: 203–206. Bridgeview salt tolerant alfalfa (Medicago sativa L.) was developed by the Agriculture and Agri-Food Canada Research Centre, Lethbridge, Alberta in cooperation with the salt laboratory at Semiarid Prairie Agricultural Research Centre, Swift Current, Saskatchewan. This synthetic cultivar, tested as SC-A101 in the Western Forage Testing System (WFTest), was developed for improved seedling vigor and high forage yield under saline conditions. This cultivar yielded about 1% better than Beaver check in the WFTest over 36 location years. The pedigree of this cultivar consists of saline tolerant selections from Apica, AC Blue J, Barrier, Beaver, Heinrichs, Rangelander and Roamer alfalfa. This cultivar produced higher dry matter yield than Beaver in the third year of a test conducted in a naturally saline seep area in Vauxhall, AB. SC-A101 was found to perform significantly higher emergence, survival and biomass production than Rangelander alfalfa in an indoor test at salt levels higher than 16 dS m−8. Bridgeview was registered by CFIA on 2011 May 16 (Reg. No. 7018) and was licensed to SeCan for seed multiplication and distribution. This cultivar is well suited for hay production in western Canada.

Yellowhead alfalfa

Yellowhead is a cultivar of alfalfa (Medicago sativa L. Subsp. falcata). Yellowhead was selected at the Semiarid Prairie Agricultural Research Centre, Agriculture and Agri-Food Canada (AAFC), Swift Current, SK, and developed through the collaboration of Research Centres of AAFC in Saskatchewan. Yellowhead is a “falcata type”, i.e., yellow flowered with sickle shaped seed pods, with about 60% of the plants displaying the rhizomatous characteristic. Yellowhead is moderately resistant to bacterial wilt and particularly tolerant of competition in mixed swards with grass and under heavy grazing. The herbage yield of Yellowhead was not significantly different from that of the parent population, ScMf 3713 and check cultivars in trials conducted on dryland near Swift Current, Saskatchewan.Key words: Cultivar description, winter hardiness, persistence, grazing tolerance

Registration of DT676 Loose Smut Resistant Durum Wheat Germplasm

DT676 (Reg. No. GP‐838, PI 650845), initially identified as P9162‐BJ08*B, is a durum wheat [Triticum turgidum L. subsp. durum (Desf.) Husn.] line released in 2007 by Agriculture and Agri‐Food Canada, Semiarid Prairie Agricultural Research Centre in Swift Current, SK, Canada. Well adapted to the drier regions of the northern Great Plains, DT676 is a source of resistance to the prevalent Canadian prairie races of loose smut [caused by Ustilago tritici (Pers.) Rostr.].

Annual Meeting, Saskatoon, Saskatchewan, 2007 / Réunion annuelle, Saskatoon, Saskatchewan, 2007

Annual Meeting, Saskatoon, Saskatchewan, 2007 / Réunion annuelle, Saskatoon, Saskatchewan, 2007

Saskatchewan Regional Meeting, 2006 The Canadian Phytopathological Society

Identification of Avirulence genes in Leptosphaeria maculans corresponding to resistance genes LepR1, LepR2, andLepR3 to blackleg in Brassica napus. M.L. Arla, F. Yu, J. Christianson, S. Kuzmicz, and S.R. Rimmer.Saskatoon Research Centre, Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK S7N 0X2, Canada. The genetics of resistance to cercospora leaf spot [Pseudocercospora cruenta] of cowpea.H.M. Booker and P. Umaharan.Plant Gene Resources Canada, Saskatoon Research Centre, Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK S7N 0X2, Canada; and (P.U.) Department of Life Sciences, The University of the West Indies, St. Augustine, Trinidad and Tobago. Phylogenetic and PCR - denaturing- Gradient gel electophoresis approaches revealed an important intraspecific heterogeneity in a Canadian population of Fusarium avenaceum. P. Daida, M.R. Fernandez, and V. Vujanovic. Department of applied Microbiology and Food Science, University of Saskatchewan, Saskatoon, College of Agriculture and Bioresources, SK S7N 5A8, Canada; (M.R.F.) Semiarid Prairie Agricultural Research Centre, Agriculture and Agri-Food,Canada, P.O. Box 1030, Swift Current, SK S9H 3X2, Canada; And (V.V.) Department of Aplied Microbiology and Food Science, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada. Effect of medium glucose concentration and aeration on liquid-culture sporulation and efficacy of Colletotrichum truncatum as a biocontrol agent of scentless chamomile.F.L. Dokken and G. Peng.Crop Development Centre, Department of Plant Sciences, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada; and (G.P.) Saskatoon Research Centre, Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK S7N 0X2, Canada. Occurence of Ascochyta pisi on field pea in Saskatchewan.F.L. Dokken, S. Banniza, T. Warkentin, and R.A.A. Morrall.Crop Development Centre, Department of Plant Science, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada; and (R.A.A.M.) Department of Biology, University of Saskatchewan, 112 Science Place, Saskatoon SK S7N 5E2, Canada. Impacts of agronomic practices on common root rot of barley in eastern Saskatchewan. M.R. Fernandez, R.P. Zentner, R.M. DePauw, D. Gehl, and F.C. Stevenson.Semiarid Prairie Agricultural Research Centre, Agriculture and Agri-Food,Canada (AAFC), P.O. Box 1030, Swift Current, SK S9N 3X2, Canada; (D.G.) Indian Head Research Farm, AAFC, P.O. 760, Indian Head, SK S0G 2K0, Canada; and (F.C.S.) 142 Rogers Road, Saskatoon, Sk S7N 3T6, Canada. Impacts of agronomic practices on fusarium head blight[Fusarium spp.] in barley in eastern Saskatchewan.M.R. Fernandez, R.P. Zentner, R.M. DePauw, D. Gehl, and F.C. Stevenson.Semiarid Prairie Agricultural Research Centre, Agriculture and Agri-Food,Canada (AAFC), P.O. Box 1030, Swift Current, SK S9N 3X2, Canada; (D.G.) Indian Head Research Farm, AAFC, P.O. 760, Indian Head, SK S0G 2K0, Canada; and (F.C.S.) 142 Rogers Road, Saskatoon, Sk S7N 3T6, Canada. Siderophore-mediated iron uptake is the major mode of iron assimilation in Fusarium Graminearum D.L. Greenshields, G. Selvaraj, and Y. Wei. Department of Biology,University of Saskatchewan, 112 Science Place, Saskatoon SK S7N 5E2, Canada; and (G.S.) Plant Biotechnology Insititute, National Research Council of Canada, 110 Gymnasium Place, Saskatoon, SK S7N 0W9, Canada. Mapping of quantitative trait loci assoiciated with resistance to net blotch[Pyrenophora teres] in barley. T.S. Grewal, B.G. Rossnagel, and G.J. Scoles.Crop Development Centre, Department of Plant Science, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada. A role for Autophagy in the Arabidopsis - Colletotrichum higginsianum pathosystem. R.M. Kennedy, G. Liu, L. Forseille, and Y. Wei. Department of Biology, University of Saskatchewan, 112 Science Place, Saskatoon SK S7N 5E2, Canada; snd (L.F.) Plant Biotechnology Institute, National Research Council of Canada, 110 Gymnasium Place, Saskatoon, SK S7N 0W9, Canada. Development of disease symptoma during hemibiotrophic Colletotrichum infection is correlated with senescence in detached Arabidopsis leaves. G. Liu, R. Kennedy, D.L. Greenshields, G. Peng, L. Forseille, and Y. wei.Department of Biology, University of Saskatchewan, 112 Science Place, Saskatoon SK S7N 5E2, Canada.(G.P., L.F.) Saskatoon Research Centre, Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK S7N 0X2, Canada. Biodiversity of Fusarium spp. Associated with a durum wheat - pulse rotation system in semiarid Saskatchewan fields. D.C. Mavragani, C. Hamel, and V. Vujanovic.Department of Applied Microbiology and Food Science, University of Saskatchewan, Saskatoon, College of Agriculture and Bioresources, SK S7N 5A8, Canada; (C.H.) Semiarid Prairie Agricultural Research Centre, Agriculture and Agri-Food,Canada, P.O. Box 1030, Swift Current, SK S9H 3X2, Canada; And (V.V.) Department of Aplied Microbiology and Food Science, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada. The infection process of two races (Ct0 and Ct1) of Colletotrichum truncatum on lentil. J. Wang and S. Banniza. Department of Plant Sciences, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada.

Economics of spring wheat production systems using conventional tillage management in the Brown soil zone – Revisited

Producers in the semiarid Brown soil zone of the Canadian Prairies have historically used fallow (F)-based cropping systems with mechanical tillage methods to produce spring wheat (Triticum aestivum L.) (W). However, in the past two decades government policies and programs have changed, as have cropping practices, market opportunities, and weather patterns. This study re-examines the economic merits of these conventional cropping systems under today’s conditions in regard to the optimal cropping frequency, value of applying N and P fertilizer at soil test rates, and the possible advantage of replacing monoculture wheat with lentil (Lens culinaris Medikus) (Lent) or flax (Linum usitatissimum L.) (Flx) grown in mixed rotations. The analysis draws on data from a long-term crop rotation experiment that was established in 1967 on an Orthic Brown Chernozem at the Semiarid Prairie Agricultural Research Centre at Swift Current, Saskatchewan. All cropping systems were managed using conventional tillage practices, which attempted to conserve as much surface crop residue as possible (i.e., stubble mulch tillage techniques were used). The findings for 1985–2002, a period characterized by above normal precipitation, were compared with those reported previously for the 1967–1984 period when growing conditions were less favorable but more typical for this area. Net returns during 1985–2002 were highest for W-Lent ($93 ha-1 yr-1) and lowest for F-Flx-W ($38 ha-1 yr-1). Net returns for well-fertilized F-W, F-W-W, F-W-W-W-W-W, and Cont W during this same period were similar, averaging about $52 ha-1 yr-1 or 44% less than for W-Lent. These results contrast with those reported for the previous 18-yr period when F-W and F- W-W generally produced higher net returns than Cont W. Within the F-W-W systems, the application of both N and P fertilizer increased the 18-yr (1985–2002) mean net returns by $18 ha-1 yr-1 compared with application of N only, and by $32 ha-1 yr-1 compared with application of P only. For Cont W the application of N and P fertilizer increased the mean net returns by $71 ha-1 yr-1 compared with application of P only. These economic benefits from N and P fertilization were much higher than those reported in 1967–1984 due to the more humid growing conditions and the increased rate of N fertilizer prescribed by the soil testing lab since 1991. Further, our findings showed that only if producers were highly risk averse, do not subscribe to all-risk crop insurance , or if the price for wheat was high or price for lentil low, would the monoculture wheat systems be preferred to W-Lent. However, producers who are highly risk averse would still opt for the cropping systems that included some summerfallow. Our findings support the recent trends in land use practices by area producers towards more diversified and intensive cropping systems which are less reliant on frequent fallowing. Key words: Crop rotations, wheat, lentil, flax, summerfallow, production costs, net returns, income variability

AC Saltlander green wheatgrass

AC Saltlander originated from seeds collected in Turkey by United States Department of Agricultural (USDA) scientists. Plants from these seeds were grown in a nursery near Logan, UT, where researchers at the USDA Forage and Range Research Laboratory selected desirable parents to obtain caespitose growth. In a collaborative project, selected germplasm of this natural hybrid was made available to the Semiarid Prairie Agricultural Research Centre (SPARC), Agriculture and Agri-Food Canada (AAFC) for salt-tolerance testing and improvement. A series of mass selection breeding cycles was conducted at Swift Current, where the resulting plants were evaluated for resistence to root-zone salinity, winter hardiness, and desirable plant morphology, including uniform plant colour, vegetative vigour, leafiness, seed-set, and freedom from plant pests. The progenies from each cycle were cloned, half of which were transported to the Agricultural Research Service Laboratory in Utah, and half intercrossed to develop AC Saltlander, a palatable forage with salinity tolerance equal to that of tall wheatgrass [Thinopyrum ponticum (Podp.) Lui & Wang]. Key words: Green wheatgrass, salt-tolerant forage, salinity, Elymus hoffmannii, perennial forage, reclamation grass

The Fourth Canadian Workshop on Fusarium Head Blight / Quatrième colloque canadien sur la fusariose

The Fourth Canadian Workshop on Fusarium Head Blight / Quatrième colloque canadien sur la fusariose

Saskatchewan Regional Meeting, 2005

Saskatchewan Regional Meeting, 2005

Effect of fallow frequency, flexible rotations, legume green manure, and wheat class on the economics of wheat production in the Brown soil zone

Producers in the semiarid Brown soil zone of Saskatchewan have historically produced spring wheat (Triticum aestivum L.) in fallow-based rotations because these cropping systems are profitable and risk efficient; however, their use has also been most damaging to soil quality. New wheat types and management methods have been developed that may offer wheat producers opportunities to enhance economic returns, while improving environmental sustainability. This study compares the economic merits of reducing fallow (F) frequency, using an annual legume green manure (LGM) crop as a summer fallow replacement, adopting a flex-cropping approach based on available soil water reserves (if water) or the need to control problem weeds (if weeds), and the production of Canada Western Red Spring (CWRS) wheat (W) versus the higher yielding Canada Prairie Spring (CPS) wheat class (HY). The results are based on 15 yr of data from seven crop rotations included in an ongoing experiment being conducted on an Orthic Brown Chernozem at the Semiarid Prairie Agricultural Research Centre at Swift Current, Saskatchewan. The crop rotations included F-W-W, LGM-W-W, F-HY-HY, F-W-W-W, continuous W (Cont W), Cont W (if water), and Cont W (if weeds). Cropping systems were managed using conservation tillage practices. They were fertilized with recommended rates of N and P based on soil tests, and crop residue was maintained as tall as possible (usually > 30 cm) to enhance snow trapping. The 1988–2002 study period was characterized by above normal growing season precipitation; thus, grain yields were also above average for this region. Results showed that producers will earn the highest net return with Cont W ($41 ha-1), despite this rotation having the highest production costs. Net returns ranked second highest for F-W-W-W, F-HYHY, and the flex-crop rotations (about $15 ha-1 less than Cont W), and ranked lowest for F-W-W and LGM-W-W (about $25 ha-1 less). However, since 1993, when the LGM was managed more effectively than in the first 6 yr, LGM-W-W was more profitable than F-W-W. On average, it was more profitable to produce CPS compared with CWRS wheat when the CPS/CWRS price ratio was greater than 0.8. Producers who are highly averse to risk would still choose cropping systems that included some summer fallow, while those with lower risk aversion would choose Cont W, but with all-risk crop insurance. In the absence of an all-risk crop insurance program, producers would typically choose Cont W (if water), F-W-W-W, or F-W-W. We concluded that area producers, who practice conservation tillage management and use tall stubble for snowtrapping, can enhance farm income by moving to more intensive cropping systems, and while doing so, they will foster improved environmental sustainability. Key words: Crop rotations, wheat, summer fallow, legume green manure, flex-cropping, production costs, net returns, income variability

Registration of Sawfly Resistant Hexaploid Spring Wheat Germplasm Lines Derived from Durum

Crop ScienceVolume 45, Issue 4 p. 1665-1666 Registration Registration of Sawfly Resistant Hexaploid Spring Wheat Germplasm Lines Derived from Durum F.R. Clarke, Corresponding Author F.R. Clarke [email protected] Semiarid Prairie Agricultural Research Centre, Agriculture and Agri_Food Canada, Box 1030, Swift Current, Saskatchewan, Canada, S9H 3X2 Corresponding author ([email protected])Search for more papers by this authorR.M. DePauw, R.M. DePauw Semiarid Prairie Agricultural Research Centre, Agriculture and Agri_Food Canada, Box 1030, Swift Current, Saskatchewan, Canada, S9H 3X2Search for more papers by this authorT. Aung, T. Aung Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, MB, Canada, R3T 2M9Search for more papers by this author F.R. Clarke, Corresponding Author F.R. Clarke [email protected] Semiarid Prairie Agricultural Research Centre, Agriculture and Agri_Food Canada, Box 1030, Swift Current, Saskatchewan, Canada, S9H 3X2 Corresponding author ([email protected])Search for more papers by this authorR.M. DePauw, R.M. DePauw Semiarid Prairie Agricultural Research Centre, Agriculture and Agri_Food Canada, Box 1030, Swift Current, Saskatchewan, Canada, S9H 3X2Search for more papers by this authorT. Aung, T. Aung Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, MB, Canada, R3T 2M9Search for more papers by this author First published: 01 July 2005 https://doi.org/10.2135/cropsci2003.0607Citations: 11 Registration by CSSA. Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article.Citing Literature Volume45, Issue4July–August 2005Pages 1665-1666 RelatedInformation

Annual Meeting, Ottawa, Ontario, 2004

Annual Meeting, Ottawa, Ontario, 2004

The third Canadian workshop on fusarium head blight, Winnipeg, Manitoba, 2003 / Troisième colloque canadien sur la fusariose, Winnipeg, Manitoba, 2003

The third Canadian workshop on fusarium head blight, Winnipeg, Manitoba, 2003 / Troisième colloque canadien sur la fusariose, Winnipeg, Manitoba, 2003

Manitoba Regional Meeting, 2003

Screening accessions of Avena spp. for resistance to oat stem rust race NA67. J. Gold, C. Wolfe, and T. Fetch.Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada. Leaf rust reaction, agronomic performance, and quality of near-isogenic lines with new sources and combinations of leaf rust resistance genes. B. McCallum, G. Humphreys, O.M. Lukow, R. DePauw, and C. Hiebert. Cereal Research Centre, Agriculture and Agri-Food Canada (AAFC), 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada; and (R.D.) Semiarid Prairie Agricultural Research Centre, AAFC, P.O. Box 1030, Swift Current, SK S9H 3X2, Canada. Sunflower rust in Manitoba — New races or a function of favourable disease conditions? K.Y. Rashid. Cereal Research Centre, Agriculture and Agri-Food Canada, Morden Research Station, Unit 100-101, Route 100, Morden, MB R6M 1Y5, Canada. Effects of late blight on the spatio–temporal development of pink rot and soft rot diseases in potato tubers, based on polymerase chain reaction assays. O. Wally, A. El Hadrami, L. Adam, L. Lamari, and F. Daayf. Department of Plant Science, University of Manitoba, 222 Agriculture Building, Winnipeg, MB R3T 2N2, Canada. Differential expression of PR-1 and peroxidase in potato leaves infected with US-1 and US-8 genotypes of Phytophthora infestans. X. Wang and F. Daayf. Department of Plant Science, 222 Agriculture Building, University of Manitoba, Winnipeg, MB R3T 2N2, Canada. Use of bacterial antagonists in the biological control of Sclerotinia sclerotiorum infection of canola. Y. Zhang, W.G.D. Fernando, and F. Daayf. Department of Plant Science, 222 Agriculture Building, University of Manitoba, Winnipeg, MB R3T 2N2, Canada.

The Canadian Phytopathological Society Annual Meeting, Montréal, Quebec, 2003

The Canadian Phytopathological Society Annual Meeting, Montréal, Quebec, 2003

Tom, Russian wildrye

Tom, a new diploid cultivar of Russian wildrye, Psathyrostachys juncea (Fisch.) Nevski, was developed by the Semiarid Prairie Agricultural Research Centre, Research Branch, Agriculture and Agri-Food Canada, Swift Current, SK. Tom is an eight-clone synthetic developed by recurrent selection for heavy seed weight and improved seedling emergence from deep planting. Tom represents a significant improvement in herbage yielding ability over the check cultivars Swift and Tetracan. Key words: Cultivar description, Russian wildrye, Psathyrostachys juncea (Fisch.) Nevski, seedling emergence, seed weight

Saskatchewan Regional Meeting, 2002, The Canadian Phytopathological Society / Réunion régionale de la Saskatchewan, 2002, La Société Canadienne de Phytopathologie

Blight of coriander and caraway in Saskatchewan, 2000–2002. L.J. Duczek and A.E. Slinkard. 30 Birch Place, Saskatoon, SK S7N 2P6, Canada; and (A.E.S) Department of Plant Science, University of Saskatchewan, Saskatoon, 51 Campus Drive, SK S7N 5A8, Canada. Association of seed color with incidence and severity of kernel discoloration caused by Pyrenophora triticirepentis. M.R. Fernandez and R.M. DePauw. Semiarid Prairie Agricultural Research Centre, Agriculture and Agri- Food Canada, P.O. Box 1030, Swift Current, SK S9H 3X2, Canada. Potential synergy of a plant pathogen and herbicides for improved control of scentless chamomile. G.L. Graham, G. Peng, K.L. Bailey, and F.A. Holm. Saskatoon Research Centre, Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK S7N 0X2, Canada; and (G.L.G., F.A.H.) Department of Plant Sciences, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada. Histochemical and molecular genetic analyses of sucrose hydrolysis in mildewed wheat leaves. D.L. Greenshields, F. Wang, G. Selvaraj, and Y. Wei. Department of Biology, University of Saskatchewan, 112 Science Place, Saskatoon, SK S7N 5E2, Canada; and (G.S.) Plant Biotechnology Institute, National Research Council of Canada, 110 Gymnasium Place, Saskatoon, SK S7N 0W9, Canada. Glyphosate herbicides affect plant pathogenic fungi. K.G. Hanson and M.R. Fernandez. Semiarid Prairie Agricultural Research Centre, Agriculture and Agri-Food Canada, P.O. Box 1030, Swift Current, SK S9H 3X2, Canada. Metabolism of the phytoalexins camalexin and 6- methoxycamalexin by the fungus Sclerotinia sclerotiotum causing stem rot. M.S.C. Pedras and P.W.K. Ahiahonu. Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada. Isolation, structure determination, and antifungal activity of phytoalexins produced by Thlaspi arvense. M.S.C. Pedras and P.B. Chumala. Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada. Study of the biotransformation of the cruciferous phytoalexins cyclobrassinin, brassilexin, and spirobrassinin by the fungus Sclerotinia sclerotiorum causing stem rot. M.S.C. Pedras and M. Hossain. Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada. Secondary metabolites produced by the phytopathogenic fungus Rhizoctonia solani. M.S.C. Pedras and J. Liu. Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada. Biotic and abiotic stresses regulate the expression of cytosolic ascorbate peroxidase and glutathione peroxidase in wheat. X. Sheng, G. Selvaraj, and Y. Wei. Department of Biology, University of Saskatchewan, 112 Science Place, Saskatoon, SK S7N 5E2, Canada; and (S.G.) Plant Biotechnology Institute, National Research Council of Canada, 110 Gymnasium Place, Saskatoon, SK S7N 0W9,Canada. Genetic similarity among isolates of Pyrenophora triticirepentis. P.K. Singh and G.R. Hughes. Department of Plant Sciences, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada. Genotypic differences in kernel discoloration in Canada Western Red Spring and Canada Western Amber Durum wheats. H. Wang, M.R. Fernandez, T.N. McCaig, and Y.T. Gan. Semiarid Prairie Agricultural Research Centre, Agriculture and Agri-Food Canada, P.O. Box 1030, Swift Current, SK S9H 3X2, Canada.

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

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

Saskatchewan Regional Meeting, 2001, The Canadian Phytopathological Society / Réunion régionale de la Saskatchewan, 2001, La Société Canadienne de Phytopathologie

Genetic studies on resistance to blotch caused by Stagonospora nodorum in hexaploid wheat. J. Feng and G.R. Hughes. Department of Plant Sciences, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada. Pathogenicity of Fusarium avenaceum isolates from cereal and noncereal crops on durum wheat. M.R. Fernandez. Semiarid Prairie Agricultural Research Centre, Agriculture and Agri-Food Canada, P.O. Box 1030, Swift Current, SK S9H 3X2, Canada. Biotransformation of the phytoalexin brassinin by Sclerotinia sclerotiorum. M.S.C. Pedras and P.W.K. Ahiahonu. Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada. Phytotoxins from new black-leg fungal isolates. M.S.C. Pedras and P.B. Chumala. Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada. Biotransformation of analogs of the phytoalexin camalexin by the phytopathogen Rhizoctonia solani. M.S.C. Pedras and J. Liu. Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada. HPLC analyses of cultures of black-leg isolates from the Canadian prairies. M.S.C. Pedras, V. Uppala, and V. Cekic. Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada. Identification of two loci in Brassica napus for resistance to Leptosphaeria maculans. F. Yu, S.R. Rimmer, D.J. Lydiate, and G. Buzza. Saskatoon Research Centre, Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK S7N 0X2, Canada; and (G.B.) Advanta Seeds Canada Inc., Unit 3-75 Scurfield Boulevard, Winnipeg, MB R3Y 1P6, Canada.

Saskatchewan Regional Meeting, 2000, The Canadian Phytopathological Society

Pathogenic variability within a population of Mycosphaerella graminicola, a leaf-spotting pathogen of wheat. M. Razavi and G.R. Hughes. Department of Plant Sciences, University of Saskatchewan, Saskatoon, SK S7N 5A8, Canada. Genetic control of insensitivity to necrosis induced by the culture filtrate of Pyrenophora tritici-repentis race 2. P.K. Singh and G.R. Hughes. Department of Plant Sciences, University of Saskatchewan, Saskatoon, SK S7N 5A8, Canada. Chromosomal Location of Bt10 Common Bunt Resistance. R.E. Knox, J.G. Menzies, Z. Popovic, and J.D. Procunier. Semiarid Prairie Agricultural Research Centre, Agriculture and Agri-Food Canada, Box 1030, Swift Current, SK S9H 3X2, Canada; and (J.G.M., Z.P., J.D.P.) Cereal Research Centre, Agriculture and Agri-Food Canada, 195 Dafoe Road, Winnipeg, MB R3T 2M9, Canada. Effect of lodging resistance and apetalous canola cultivars on sclerotinia stem rot incidence and seed yield. H.R. Kutcher, T.K. Turkington, and G. Clayton. Saskatoon Re-search Centre, Agriculture and Agri-Food Canada, Melfort, SK S0E 1A0, Canada; and (T.T., G.C.) Lacombe Research Centre, Lacombe, AB T4L 1W8, Canada. Dollar spot disease on golf fairway turf in Saskatchewan. J. Drew Smith. Nos. 309–318, 108th Street, Saskatoon, SK S7N 1P8, Canada. Fusarium head blight in common and durum wheat and barley in Saskatchewan in 2000. M.R. Fernandez, P. Pearse, G. Holzgang, and G. Hughes. Semiarid Prairie Agricultural Research Centre, Agriculture and Agri-Food Canada, P.O. Box 1030, Swift Current, SK S9H 3X2, Canada; (P.P., G.H.) Saskatchewan Agriculture and Food, 3085 Albert St., Regina, SK S4S 0B1, Canada; and (G.H.) Department of Plant Science, University of Saskatchewan, Saskatoon, SK S7N 0W0, Canada.