Plant Protect. Sci., 2002, 38(10):165-169 | DOI: 10.17221/10346-PPS

Understanding field resistance mechanisms for improved control of Septoria triticiOriginal Paper

D.J. Lovell, S.R. Parker, N.D. Paveley, A.J. Worland
1 IACR-Long Ashton Research Station, Bristol BS41 9AF, United Kingdom
2 ADAS-High Mowthorpe, Duggleby, Malton, North Yorkshire, YO17 8BP
3 JIC, Norwich Research Park, Colney, Norwich NR4 7UH, United Kingdom Tel.: +44 1275 549 322, Fax: +44 1275 394 007, E-mail: darren.lovell@bbsrc.ac.uk

Field resistance can contribute to reductions in epidemic progress of Septoria tritici in winter wheat. Crop growth andcanopy architecture are identified as key mechanisms of field resistance. Near isogenic lines differing for dwarfing (Rht)and photoperiod sensitivity (Ppd) genes, enabled the study of target traits in a constant background of genetic resistance.Epidemics were consistently earlier in shorter crops across a range of environments. The mechanism for this effect wasidentified as an increase in spore arrival due to a reduction in the required dispersal distance between infective tissueand emerging upper culm leaves.

Keywords: Septoria tritici; winter wheat; dwarfing genes; photoperiod sensitivity; disease escape; disease control

Published: June 30, 2002  Show citation

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Lovell DJ, Parker SR, Paveley ND, Worland AJ. Understanding field resistance mechanisms for improved control of Septoria tritici. Plant Protect. Sci. 2002;38(SI 1 - 6th Conf EFPP):165-169. doi: 10.17221/10346-PPS.
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