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Response of paraquat-resistant and -susceptible horseweed (Conyza canadensis) to diquat, linuron, and oxyfluorfen

Published online by Cambridge University Press:  20 January 2017

Susan Weaver ,
Michael Downs  and
Brandi Neufeld
Michael Downs
Affiliation:
Greenhouse and Processing Crops Research Centre, Agriculture and Agri-Food Canada, Harrow, Ontario, Canada N0R 1G0
Brandi Neufeld
Affiliation:
Greenhouse and Processing Crops Research Centre, Agriculture and Agri-Food Canada, Harrow, Ontario, Canada N0R 1G0
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Abstract

Horseweed is a winter annual weed that has evolved resistance to multiple herbicide modes of action in 11 countries worldwide. A paraquat-resistant horseweed population in an Ontario orchard that was being managed by a rotation of herbicides began to show increased tolerance to the herbicide linuron. Experiments were conducted in the greenhouse to compare the response of this population and several paraquat-susceptible populations to linuron, diquat, and oxyfluorfen. Plants were sprayed with a range of doses of each herbicide when they were from 5 to 10 wk old, and the ED50, or dose at which shoot dry weight was reduced by 50%, was estimated. There was a sevenfold difference in the ED50 values of the paraquat-resistant and -susceptible populations in response to diquat and a threefold difference in response to linuron. The response to oxyfluorfen was age dependent. The ratio of resistance to susceptible ED50 values was estimated as 57 for 5-wk-old plants and 11 for 8-wk-old plants in response to oxyfluorfen. Ten-week-old plants from both populations showed no response to oxyfluorfen at rates up to 4.8 kg ai ha−1.

Keywords

Diquatlinuronoxyfluorfenparaquathorseweed, Conyza canadensis L. ERICAHerbicide resistancemultiple resistancecross-resistanceCanada fleabane
Type
Weed Biology and Ecology
Information
Weed Science , Volume 52 , Issue 4 , August 2004 , pp. 549 - 553
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

Alizadeh, H. M., Preston, C., and Powles, S. B. 1998. Paraquat-resistant biotypes of Hordeum glaucum from zero-tillage wheat. Weed Res 38:139–142.CrossRefGoogle Scholar
Amsellem, Z., Jansen, M. A. K., Driesenaar, A. R. J., and Gressel, J. 1993. Developmental variability of photooxidative stress tolerance in paraquat-resistant Conyza. Plant Physiol 103:1097–1106.CrossRefGoogle ScholarPubMed
Gadamski, G., Ciarka, D., Gressel, J., and Gawronski, S. W. 2000. Negative cross-resistance in triazine-resistant biotypes of Echinochloa crus-galli and Conyza canadensis . Weed Sci 48:176–180.CrossRefGoogle Scholar
Heap, I. M. 2003. International Survey of Herbicide-Resistant Weeds. www.weedscience.com.Google Scholar
Matsumoto, H., Kashimoto, Y., and Warabi, E. 1999. Basis for common chickweed (Stellaria media) tolerance to oxyfluorfen. Pestic. Biochem. Physiol 64:47–53.CrossRefGoogle Scholar
Monaco, T. J., Weller, S. C., and Ashton, F. M. 2002. Membrane disrupters. Pages 235–255 in Weed Science. 4th ed. New York: J. Wiley.Google Scholar
Pölös, E., Laskay, G., Szigeti, Z., Pataki, Sz, and Lehoczki, E. 1987. Photosynthetic properties and cross-resistance to some urea herbicides of triazine-resistant Conyza canadensis Cronq (L). Z. Naturforsch 24c:783–793.CrossRefGoogle Scholar
Pölös, E., Mikulas, J., Szigeti, Z., Matkovics, B., Hai, D. Q., Parducz, A., and Lehoczki, E. 1988. Paraquat and atrazine co-resistance in Conyza canadensis (L.) Cronq. Pestic. Biochem. Physiol 30:142–154.CrossRefGoogle Scholar
Preston, C. 1994. Resistance to photosystem I disrupting herbicides. Pages 61–82 in Powles, S. B. and Holtum, J.A.M. eds. Herbicide Resistance in Plants: Biology and Biochemistry. Boca Raton, FL: Lewis.Google Scholar
[SAS] Statistical Analysis Systems. 2000. SAS/STAT Software, Release 8.1. Cary, NC: Statistical Analysis Systems Institute Pp. 2371–2381.Google Scholar
Seefeldt, S. S., Jensen, J. E., and Fuerst, E. P. 1995. Log-logistic analysis of herbicide dose-response relationships. Weed Technol 9:218–227.CrossRefGoogle Scholar
Shaaltiel, Y., Glazer, A., Bocion, P. F., and Gressel, J. 1988. Cross tolerance to herbicidal and environmental oxidants of plant biotypes tolerant to paraquat, sulfur dioxide, and ozone. Pestic. Biochem. Physiol 31:13–23.CrossRefGoogle Scholar
Smisek, A., Doucet, C., Jones, M., and Weaver, S. 1998. Paraquat resistance in horseweed (Conyza canadensis) and Virginia pepperweed (Lepidium virginicum) from Essex County, Ontario. Weed Sci 46:200–204.CrossRefGoogle Scholar
VanGessel, M. J. 2001. Glyphosate-resistant horseweed from Delaware. Weed Sci 49:703–705.CrossRefGoogle Scholar
Vaughn, K. C., Vaughan, M. A., and Camilleri, P. 1989. Lack of cross-resistance of paraquat-resistant hairy fleabane (Conyza bonariensis) to other toxic oxygen generators indicates enzymatic protection is not the resistance mechanism. Weed Sci 37:5–11.CrossRefGoogle Scholar
Ye, B. and Gressel, J. 2000. Transient, oxidant-induced antioxidant transcript and enzyme levels correlate with greater oxidant-resistance in paraquat-resistant Conyza bonariensis . Planta 211:50–61.CrossRefGoogle ScholarPubMed