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dc.contributor.authorGilles, T.
dc.contributor.authorFitt, Bruce D.L.
dc.contributor.authorJeger, M.J.
dc.date.accessioned2013-06-18T10:45:45Z
dc.date.available2013-06-18T10:45:45Z
dc.date.issued2001-04
dc.identifier.citationGilles , T , Fitt , B D L & Jeger , M J 2001 , ' Effects of environmental factors on development of Pyrenopeziza brassicae (light leaf spot) apothecia on oilseed rape debris ' , Phytopathology , vol. 91 , no. 4 , pp. 392-398 . https://doi.org/10.1094/PHYTO.2001.91.4.392
dc.identifier.otherPURE: 1402795
dc.identifier.otherPURE UUID: 8858b301-b5e0-4707-a17c-6b80c5275446
dc.identifier.otherBibtex: urn:ba6e78bfbdd1fd0b58474fab63fcb624
dc.identifier.otherScopus: 0035093987
dc.identifier.urihttp://hdl.handle.net/2299/10821
dc.descriptionPublication no. P-2001-0221-01R. This article is in the public domain and not copyrightable. It may be freely reprinted with customary crediting of the source. The American Phytopathological Society, 2001
dc.description.abstractThe development of Pyrenopeziza brassicae (light leaf spot) apothecia was studied on petiole debris from artificially infected oilseed rape leaves incubated at temperatures from 6 to 22 degreesC under different wetness regimes and in 16 h light/8 h dark or continuous darkness. There was no significant difference between light treatments in numbers of apothecia that developed. Mature apothecia developed at temperatures from 5 to 18 degreesC but not at 22 degreesC. The rate of apothecial development decreased as temperature decreased from 18 to 5 degreesC; mature apothecia were first observed after 5 days at 18 degreesC and after 15 days at 6 degreesC. Models were fitted to estimates of the time (days) for 50% of the maximum number of apothecia to develop (t(1); model 1, t(1) = 7.6 + 55.8(0.839)(T)) and the time for 50% of the maximum number of apothecia to decay (t(2); model 2, t(2) = 24.2 + 387(0.730)(T)) at temperatures (T) from 6 to 18 degreesC. An interruption in wetness of the petiole debris for 4 days after 4, 7, or 10 days of wetness delayed the time to observation of the first mature apothecia for approximate to4 days and decreased the number of apothecia produced (by comparison with continuous wetness). A relationship was found between water content of pod debris and electrical resistance measured by a debris-wetness sensor. The differences between values of tl predicted by model 1 and observed values of t(1) were 1 to 9 days. Model 2 did not predict t(2); apothecia decayed more quickly under natural conditions than predicted by model 2.en
dc.format.extent7
dc.language.isoeng
dc.relation.ispartofPhytopathology
dc.subjectascoma development
dc.subjectascospores
dc.subjectCylindrosporium concentricum
dc.subjectexponential model
dc.subjectforecasting
dc.titleEffects of environmental factors on development of Pyrenopeziza brassicae (light leaf spot) apothecia on oilseed rape debrisen
dc.contributor.institutionDepartment of Human and Environmental Sciences
dc.contributor.institutionGeography, Environment and Agriculture
dc.contributor.institutionCrop Protection and Climate Change
dc.contributor.institutionSchool of Life and Medical Sciences
dc.contributor.institutionHealth & Human Sciences Research Institute
dc.description.statusPeer reviewed
rioxxterms.versionVoR
rioxxterms.versionofrecordhttps://doi.org/10.1094/PHYTO.2001.91.4.392
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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