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dc.contributor.authorFountaine, J. M.
dc.contributor.authorShaw, M. W.
dc.contributor.authorWard, E.
dc.contributor.authorFraaije, B. A.
dc.date.accessioned2012-12-10T13:59:50Z
dc.date.available2012-12-10T13:59:50Z
dc.date.issued2010-04
dc.identifier.citationFountaine , J M , Shaw , M W , Ward , E & Fraaije , B A 2010 , ' The role of seeds and airborne inoculum in the initiation of leaf blotch (Rhynchosporium secalis) epidemics in winter barley ' , Plant Pathology , vol. 59 , no. 2 , pp. 330-337 . https://doi.org/10.1111/j.1365-3059.2009.02213.x
dc.identifier.issn0032-0862
dc.identifier.otherPURE: 1269667
dc.identifier.otherPURE UUID: 77d19f14-2b8c-43c4-adca-6651b5dfadc0
dc.identifier.otherWOS: 000275107800013
dc.identifier.otherScopus: 77950943832
dc.identifier.urihttp://hdl.handle.net/2299/9338
dc.description.abstractBoth airborne spores of Rhynchosporium secalis and seed infection have been implied as major sources of primary inoculum for barley leaf blotch (scald) epidemics in fields without previous history of barley cropping. However, little is known about their relative importance in the onset of disease. Results from both quantitative real-time PCR and visual assessments indicated that seed infection was the main source of inoculum in the field trial conducted in this study. Glasshouse studies established that the pathogen can be transmitted from infected seeds into roots, shoots and leaves without causing symptoms. Plants in the field trial remained symptomless for approximately four months before symptoms were observed in the crop. Covering the crop during part of the growing season was shown to prevent pathogen growth, despite the use of infected seed, indicating that changes in the physiological condition of the plant and/or environmental conditions may trigger disease development. However, once the disease appeared in the field it quickly became uniform throughout the cropping area. Only small amounts of R. secalis DNA were measured in 24 h spore-trap tape samples using PCR. Inoculum levels equivalent to spore concentrations between 30 and 60 spores per m 3 of air were only detected on three occasions during the growing season. The temporal pattern and level of detection of R. secalis DNA in spore tape samples indicated that airborne inoculum was limited and most likely represented rain-splashed conidia rather than putative ascospores.en
dc.format.extent8
dc.language.isoeng
dc.relation.ispartofPlant Pathology
dc.titleThe role of seeds and airborne inoculum in the initiation of leaf blotch (Rhynchosporium secalis) epidemics in winter barleyen
dc.contributor.institutionDepartment of Human and Environmental Sciences
dc.contributor.institutionHealth & Human Sciences Research Institute
dc.contributor.institutionCrop Protection and Climate Change
dc.description.statusPeer reviewed
rioxxterms.versionSMUR
rioxxterms.versionVoR
rioxxterms.versionofrecordhttps://doi.org/10.1111/j.1365-3059.2009.02213.x
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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