Multiple-herbicide resistance across four modes of action in wild radish (Raphanus raphanistrum)

Populations of wild radish were collected from two fields in the northern Western Australian wheatbelt, where typical herbicide-use patterns had been practiced for the previous 17 seasons within an intensive crop production program. The herbicide resistance status of these populations clearly establ...

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Bibliographic Details
Published in:Weed science 2004-01, Vol.52 (1), p.8-13
Main Authors: Walsh, Michael J., Powles, Stephen B., Beard, Brett R., Parkin, Ben T., Porter, Sally A.
Format: Article
Language:English
Subjects:
2,4-D amine resistance
Amines
At risk population
Auxins
diflufenican resistance
Dose response relationship
Herbicide resistance
Herbicides
metribuzin resistance
Mode of action
Multiple resistance
PHYSIOLOGY, CHEMISTRY, AND BIOCHEMISTRY
Plants
Radishes
Wheat
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Summary:Populations of wild radish were collected from two fields in the northern Western Australian wheatbelt, where typical herbicide-use patterns had been practiced for the previous 17 seasons within an intensive crop production program. The herbicide resistance status of these populations clearly established that there was multiple-herbicide resistance across many herbicides from at least four modes of action. One population exhibited multiple-herbicide resistance to the phytoene desaturase (PDS)-inhibiting herbicide diflufenican (3.0-fold), the auxin analog herbicide 2,4-D (2.2-fold), and the photosystem II-inhibiting herbicides metribuzin and atrazine. Another population was found to be multiply resistant to the acetolactate synthase-inhibiting herbicides, the PDS-inhibiting herbicide diflufenican (2.5-fold), and the auxin analog herbicide 2,4-D amine (2.4-fold). Therefore, each population has developed multiple-herbicide resistance across several modes of action. The multiple resistance status of these wild radish populations developed from conventional herbicide usage in intensive cropping rotations, indicating a dramatic challenge for the future control of wild radish.
ISSN:0043-1745
1550-2759
DOI:10.1614/WS-03-016R