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

Autor: Stephen B. Powles, Michael J. Walsh, Sally A. Porter, Ben T. Parkin, Brett R. Beard
Rok vydání: 2004
Předmět:
Zdroj: Weed Science. 52:8-13
ISSN: 1550-2759
0043-1745
DOI: 10.1614/ws-03-016r
Popis: 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.
Databáze: OpenAIRE