Resistance of Echinochloa crus-galli Populations to Acetolactate Synthase-Inhibiting Herbicides
Joint Authors
Norsworthy, Jason K.
Bond, Jason A.
Scott, Robert C.
Bararpour, Mohammad T.
Wilson, Michael J.
Riar, Dilpreet S.
Source
International Journal of Agronomy
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-11-01
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Three Echinochloa crus-galli (barnyardgrass) populations from rice fields in Arkansas (AR1 and AR2) and Mississippi (MS1), USA, were recently confirmed to be resistant to imazethapyr.
Experiments were conducted to characterize cross-resistance to acetolactate synthase- (ALS-) inhibiting herbicides and determine if malathion, a known cytochrome P450 monooxygenase (CYP) inhibitor, would overcome resistance.
The AR1 and MS1 populations were cross-resistant to bispyribac-sodium; however, AR2 was sensitive to bispyribac-sodium.
The AR1, AR2, and MS1 populations were >94, >94, and 3.3 times, respectively, more resistant to imazamox; >94, 30, and 9.4 times, respectively, more resistant to penoxsulam; and 15, 0.9, and 7.2 times, respectively, more resistant to bispyribac-sodium compared to a susceptible population.
Addition of malathion to penoxsulam reduced dry weight of all populations and increased mortality of AR2 and MS1 populations compared to penoxsulam alone.
Addition of malathion to imazethapyr and bispyribac-sodium increased the mortality of MS1 population in mixture with imazethapyr and AR1 population in mixture with bispyribac-sodium compared to treatments with imazethapyr and bispyribac-sodium applied alone.
Synergism of ALS-inhibiting herbicides with malathion indicates increased herbicide degradation by CYP as partial mechanism of resistance to penoxsulam in all resistant populations and probably to imazethapyr in MS1 and bispyribac-sodium in AR1 populations.
American Psychological Association (APA)
Riar, Dilpreet S.& Norsworthy, Jason K.& Bond, Jason A.& Bararpour, Mohammad T.& Wilson, Michael J.& Scott, Robert C.. 2012. Resistance of Echinochloa crus-galli Populations to Acetolactate Synthase-Inhibiting Herbicides. International Journal of Agronomy،Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-506066
Modern Language Association (MLA)
Riar, Dilpreet S.…[et al.]. Resistance of Echinochloa crus-galli Populations to Acetolactate Synthase-Inhibiting Herbicides. International Journal of Agronomy No. 2012 (2012), pp.1-8.
https://search.emarefa.net/detail/BIM-506066
American Medical Association (AMA)
Riar, Dilpreet S.& Norsworthy, Jason K.& Bond, Jason A.& Bararpour, Mohammad T.& Wilson, Michael J.& Scott, Robert C.. Resistance of Echinochloa crus-galli Populations to Acetolactate Synthase-Inhibiting Herbicides. International Journal of Agronomy. 2012. Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-506066
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-506066