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dc.contributor.authorKarolewski, Z.
dc.contributor.authorEvans, N.
dc.contributor.authorFitt, Bruce D.L.
dc.contributor.authorBaierl, A.
dc.contributor.authorTodd, A.D.
dc.contributor.authorFoster, S.J.
dc.identifier.citationKarolewski , Z , Evans , N , Fitt , B D L , Baierl , A , Todd , A D & Foster , S J 2004 , ' Comparative epidemiology of Pyrenopeziza brassicae (light leaf spot) ascospores and conidia from Polish and UK populations ' , Plant Pathology , vol. 53 , no. 1 , pp. 29-37 .
dc.identifier.otherPURE: 1390565
dc.identifier.otherPURE UUID: 5da15fd0-badd-4456-a9d5-33c8eb971c3c
dc.identifier.otherBibtex: urn:faa2cc7904ea09abd2eb86d5c8dbac64
dc.identifier.otherScopus: 1242345249
dc.description.abstractDespite differences in climate and in timing of light leaf spot epidemics between Poland and the UK, experiments provided no evidence that there are epidemiological differences between populations of Pyrenopeziza brassicae in the two countries. Ascospores of Polish or UK P. brassicae isolates germinated on water agar at temperatures from 8 to 24degreesC. After 12 h of incubation, percentages of ascospores that germinated were greatest at 16degreesC: 85% (Polish isolates) and 86% (UK isolates). The percentage germination reached 100% after 80 h of incubation at all temperatures tested. The rate of increase in germ tube length increased with increasing temperature from 8 to 20degreesC but decreased from 20 to 24degreesC, for both Polish and UK isolates. Percentage germination and germ tube lengths of UK P. brassicae ascospores were less affected by temperature than those of conidia. P. brassicae produced conidia on oilseed rape leaves inoculated with ascospores or conidia of Polish or UK isolates at 16degreesC with leaf wetness durations from 6 to 72 h, with most sporulation after 48 or 72 h wetness. Detection of both mating types of P. brassicae and production of mature apothecia on leaves inoculated with mixed Polish populations suggest that sexual reproduction does occur in Poland, as in the UK.en
dc.relation.ispartofPlant Pathology
dc.subjectBrassica napus
dc.subjectclimate-epidemic interactions
dc.subjectpopulation biology
dc.subjectsexual recombination
dc.subjectwinter oilseed rape
dc.titleComparative epidemiology of Pyrenopeziza brassicae (light leaf spot) ascospores and conidia from Polish and UK populationsen
dc.contributor.institutionSchool of Life and Medical Sciences
dc.contributor.institutionHealth & Human Sciences Research Institute
dc.contributor.institutionDepartment of Human and Environmental Sciences
dc.contributor.institutionGeography, Environment and Agriculture
dc.contributor.institutionCrop and Environmental Protection
dc.description.statusPeer reviewed
rioxxterms.typeJournal Article/Review

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