Claim · model-written summary
Resistant allele frequency rose from 35 to 80% after the first QoI application.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- first QoI applicatione0
- Interactor
- ascosporee0pathogen
- Outcome
- R-allele frequencye0
- Direction
- increasee0
- Value
- from 35 to 80%e0
Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleComparatorSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“a rapid increase in R-allele frequency, from 35 to 80%, was measured immediately in airborne ascospore populations sampled in a wheat plot after the first QoI application at growth stage 32.”
Title
B. A. Fraaije; H. J. Cools; J. Fountaine; et al. Phytopathology 2005. doi:10.1094/phyto-95-0933
Other claims from this paper (7)
- Observation All resistant Mycosphaerella graminicola isolates carried G143A.
- Intervention effect QoI treatments rapidly selected resistant alleles in field pathogen populations.
- Method / resource The spore trapping PCR method quantified airborne ascospores and estimated resistant allele frequency.
- Observation Most ascospores were produced during wheat senescence.
- Intervention effect After a second QoI application, resistant allele frequency in leaves and aerosols exceeded 90%.
- Observation Resistant ascospores spread as far as 85 m through the crop.
- Observation Fewer ascospores were detected after harvest, with resistant allele frequencies influenced by nearby wheat fields.