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Understanding field resistance mechanisms for improved control of Septoria tritici

Author

Listed:
  • D.J. Lovell

    (*IACR-Long Ashton Research Station, Bristol BS41 9AF, United Kingdom)

  • S.R. Parker

    (*IACR-Long Ashton Research Station, Bristol BS41 9AF, United Kingdom)

  • N.D. Paveley

    (*IACR-Long Ashton Research Station, Bristol BS41 9AF, United Kingdom)

  • A.J. Worland

    (*IACR-Long Ashton Research Station, Bristol BS41 9AF, United Kingdom)

Abstract

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.

Suggested Citation

  • D.J. Lovell & S.R. Parker & N.D. Paveley & A.J. Worland, 2002. "Understanding field resistance mechanisms for improved control of Septoria tritici," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 38(SI1-6thCo), pages 165-169.
    • Handle: RePEc:caa:jnlpps:v:38:y:2002:i:si1-6thconfefpp:id:10346-pps
    DOI: 10.17221/10346-PPS
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