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Appearance and Spread of Triazine Resistance in Common Lambsquarters (Chenopodium album)

Published online by Cambridge University Press:  12 June 2017

Henri Darmency  and
Jacques Gasquez
Henri Darmency
Affiliation:
Inst. Natl. Res. Agric. Lab., Malherbologie, BV 1540, 21034 Dijon, France
Jacques Gasquez
Affiliation:
Inst. Natl. Res. Agric. Lab., Malherbologie, BV 1540, 21034 Dijon, France
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Abstract

The first step in appearance of herbicide-resistant weed populations is the appearance of resistant plants or mutants. While efforts are underway to study and predict the spread of resistant plants within weed populations, knowledge of the conditions prevailing at the time of appearance of the first resistant plants is misunderstood. We try to shed some light on this phenomenon using the example of atrazine-resistant common lambsquarters. The population structure and variability, the presence of unusual genotypes that have a high mutation rate, the occurrence of a low-dose resistant phenotype that is the precursor of a high-dose resistant phenotype, and the potential for multiplication and spread are shown to be of major importance in the behavior of herbicide resistance.

Keywords

Atrazine 6-chloro-N-ethyl-N′-(1-methylethyl)-l,3,5-triazine-2,4-diaminecommon lambsquarters, Chenopodium album L. ♯3 CHEALHerbicide resistancemutantspopulationsCHEAL
Type
Symposium
Information
Weed Technology , Volume 4 , Issue 1 , March 1990 , pp. 173 - 177
Copyright
Copyright © 1990 Weed Science Society of America 

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References

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