Claim · model-written summary
Self-pollinated horseweed accessions had 5.9- to 40.3-fold glyphosate resistance.
- Taxon
- horseweed
Erigeron canadensise0 - Outcome
- level of glyphosate resistancee1
- Direction
- rangede1
- Value
- 5.9- to 40.3-folde0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“5.9- to 40.3-fold in horseweed”
e1“the level of glyphosate resistance, on the basis of GR 50 values, ranged from 1.7- to 42.5-fold in hairy fleabane”
t0“Conyza sp.”
Title
Distribution of Conyza sp. in Orchards of California and Response to Glyphosate and Paraquat
Marcelo L. Moretti; Lynn M. Sosnoskie; Anil Shrestha; et al. Weed Science 2015. doi:10.1614/ws-d-15-00174.1
Other claims from this paper (9)
- Observation Conyza was commonly found throughout the Central Valley.
- Observation Glyphosate-resistant individuals were confirmed in every field collection of both Conyza species.
- Association Field collections had 5- to 21-fold glyphosate resistance relative to susceptible plants, except one region.
- Observation One region had glyphosate resistance similar to susceptible plants.
- Observation Self-pollinated hairy fleabane accessions had 1.7- to 42.5-fold glyphosate resistance.
- Observation Three hairy fleabane accessions from different genetic groups were paraquat resistant at 40.1- to 352.5-fold.
- Observation One glyphosate-resistant horseweed accession was also paraquat resistant at 322.8-fold, the first confirmed California case.
- Association All identified paraquat-resistant Conyza accessions were also glyphosate resistant.
- Observation The authors infer that multiple resistant Conyza developed independently several times in California.