Understanding field resistance mechanisms for improved control of Septoria tritici
D.J. Lovell, S.R. Parker, N.D. Paveley, A.J. Worlandhttps://doi.org/10.17221/10346-PPSCitation:Lovell D.J., Parker S.R., Paveley N.D., Worland A.J. (2002): Understanding field resistance mechanisms for improved control of Septoria tritici. Plant Protect. Sci., 38: 165-169.
canopy 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 was
identified as an increase in spore arrival due to a reduction in the required dispersal distance between infective tissue
and emerging upper culm leaves.
Septoria tritici; winter wheat; dwarfing genes; photoperiod sensitivity; disease escape; disease control