Physiologic variation in Mycosphaerella graminicola from western Canada

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dc.contributor.authorGrieger, A
dc.contributor.authorLamari, L
dc.contributor.authorBrule-Babel, A
dc.date.accessioned2007-09-07T16:35:01Z
dc.date.available2007-09-07T16:35:01Z
dc.date.issued2005-03-31T16:35:01Z
dc.description.abstractMycosphaerella graminicola (anamorph: Septoria tritici), the causal agent of septoria leaf blotch of wheat, has increased in prevalence in the prairie region of Canada in recent years. It is important to know if variation in virulence occurs in the local population as was reported in other countries. Seventy-four pathogen isolates were collected from hexaploid wheat fields in Manitoba and Saskatchewan and tested for virulence on a set of differential genotypes, including four hexaploid and two tetraploid wheat genotypes. Seedlings were inoculated with a conidial suspension and assessed 14 and 21 days later for the presence of necrosis, chlorosis, and pycnidia to identify virulence patterns. Reactions of the differential host genotypes to different isolates ranged from susceptible to near-immune. Adult-plant reactions were similar to seedling reactions for all genotypes used in this study. A difference in virulence patterns on one genotype suggested that physiological specialization occurs and that two virulence groups are present in the pathogen population from western Canada, based on the set of wheat genotypes used in this study.en
dc.format.extent228410 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.citation0706-0661; CAN J PLANT PATHOL, JAN-MAR 2005, vol. 27, no. 1, p.71 to 77.en
dc.identifier.doihttp://dx.doi.org/10.1080/07060660509507196
dc.identifier.urihttp://hdl.handle.net/1993/2777
dc.language.isoengen_US
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dc.rightsrestricted accessen_US
dc.statusPeer revieweden
dc.subjectspeckled leaf blotchen
dc.subjectvirulenceen
dc.subjectresistanceen
dc.subjectSeptoria triticien
dc.subjectwheaten
dc.subjectSEPTORIA-TRITICI BLOTCHen
dc.subjectGENETIC-VARIATIONen
dc.subjectWINTER-WHEATen
dc.subjectHOST CULTIVARSen
dc.subjectSPRING WHEATen
dc.subjectLEAF BLOTCHen
dc.subjectVIRULENCEen
dc.subjectRESISTANCEen
dc.subjectPATHOGENen
dc.subjectPATHOSYSTEMen
dc.titlePhysiologic variation in Mycosphaerella graminicola from western Canadaen
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