International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
MAYWEED CHAMOMILE (Anthemis cotula)

with GROUP B/2 resistance: (ALS INHIBITORS)
Inhibition of acetolactate synthase ALS (acetohydroxyacid synthase AHAS)
MUTATION: PROLINE 197 to THREONINE







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Chemical FamilyExample HerbicideResistance Level
ImidazolinonesImazethapyr Intermediate Resistance < 10 fold
PyrimidinylthiobenzoatesBispyribac-Na Not Determined
SulfonylureasChlorsulfuron Resistant > 10 fold
TriazolopyrimidinesChloransulam-methyl Intermediate Resistance < 10 fold
SulfonylaminocarbonyltriazolinoneFlucarbazone-Na Not Determined

NOTE
Different Pro197 substitutions were present within populations, and therefore specific cross resistance patterns conferred by specific substitutions are confounded.

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.  Monday, September 25, 2017 .  Available  www.weedscience.org
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