International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
CATCHWEED BEDSTRAW (Galium aparine)

with GROUP B/2 resistance: (ALS INHIBITORS)
Inhibition of acetolactate synthase ALS (acetohydroxyacid synthase AHAS)
MUTATION: TRYPTOPHAN 574 to LEUCINE







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Chemical FamilyExample HerbicideResistance Level
ImidazolinonesImazethapyr Intermediate Resistance < 10 fold
PyrimidinylthiobenzoatesBispyribac-Na Intermediate Resistance < 10 fold
SulfonylureasChlorsulfuron Intermediate Resistance < 10 fold
TriazolopyrimidinesChloransulam-methyl Intermediate Resistance < 10 fold
SulfonylaminocarbonyltriazolinoneFlucarbazone-Na Intermediate Resistance < 10 fold

NOTE

Paper includes citation to prior report (in Chinese) of this mutation. 

R/S ratios not quantified, but plants with this mutation survived 4x dose of one herbicide from each class. 


REFERENCES

This case was entered by Patrick Tranel Email: tranel@illinois.edu
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Cite this site as: Heap, I.  The International Survey of Herbicide Resistant Weeds.  Online.  Internet.  Tuesday, June 25, 2019 .  Available  www.weedscience.org
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