International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
GROUP A/1 RESISTANT STERILE OAT
(Avena sterilis ssp. ludoviciana)


ACCase inhibitors (A/1)

France
INTRODUCTION STERILE OAT
Sterile oat (Avena sterilis ssp. ludoviciana) is a monocot weed in the Poaceae family.  In France this weed first evolved resistance to Group A/1 herbicides in 1996 and infests Wheat.   Group A/1 herbicides are known as ACCase inhibitors (Inhibition of acetyl CoA carboxylase (ACCase)).  Research has shown that these particular biotypes are resistant to fenoxaprop-P-ethyl and they may be cross-resistant to other Group A/1 herbicides.

The 'Group' letters/numbers that you see throughout this web site refer to the classification of herbicides by their site of action. To see a full list of herbicides and HRAC herbicide classifications click here.

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QUIK STATS (last updated Sep 15, 2000 )

Common NameSterile oat
SpeciesAvena sterilis ssp. ludoviciana
GroupACCase inhibitors (A/1)
Herbicidesfenoxaprop-P-ethyl
LocationFrance
Year1996
Situation(s)Wheat
Contributors - (Alphabetically)Jacques Gasquez 
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NOTES ABOUT THIS BIOTYPE

AREAS FOUND

Jacques Gasquez
South west of France

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GENERAL

Jacques Gasquez
We have no idea of the resistance mechanisms involved. The resistant populations are generally a mixture of Avena fatua and Avena Sterilis ludoviciana

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ACADEMIC ASPECTS

Confirmation Tests

Field, Greenhouse, and Laboratory trials comparing a known susceptible Sterile oat biotype with this Sterile oat biotype have been used to confirm resistance. For further information on the tests conducted please contact the local weed scientists that provided this information.
 
Genetics

Genetic studies on Group A/1 resistant Sterile oat have not been reported to the site.  There may be a note below or an article discussing the genetics of this biotype in the Fact Sheets and Other Literature
 
Mechanism of Resistance

The mechanism of resistance for this biotype is either unknown or has not been entered in the database.  If you know anything about the mechanism of resistance for this biotype then please update the database.
 
Relative Fitness

There is no record of differences in fitness or competitiveness of these resistant biotypes when compared to that of normal susceptible biotypes.  If you have any information pertaining to the fitness of Group A/1 resistant Sterile oat from France please update the database.
 
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CONTRIBUTING WEED SCIENTISTS

JACQUES GASQUEZ
Inra
Laboratoire De Malherbologie
702 Hickory Ct
Dijon, 21034, Cedex
France
Email Jacques Gasquez

ACKNOWLEDGEMENTS

The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in France have been instrumental in providing you this information. Particular thanks is given to Jacques Gasquez for providing detailed information.
Herbicide Resistant Sterile oat Globally
(Avena sterilis ssp. ludoviciana)
Herbicide Resistant Sterile oat Globally
(Avena sterilis ssp. ludoviciana)
Drag a column header and drop it here to group by that column
Herbicide Resistant Sterile oat Globally
(Avena sterilis ssp. ludoviciana)
#CountryFirstYearSituationActive IngredientsSite of Action
1 Australia (New South Wales ) AustraliaNew South Wales 2002 Wheat flamprop-methyl 1 Antimicrotubule mitotic disrupter (Z/25)
30Avena sterilis ssp. ludovicianaSterile oat5198
2 Australia (South Australia) AustraliaSouth Australia2005 Wheat iodosulfuron-methyl-sodium 1 ALS inhibitors (B/2)
30Avena sterilis ssp. ludovicianaSterile oat5252
3 Australia (Queensland) AustraliaQueensland2006 Chickpea, Spring Barley, and Wheat clodinafop-propargyl, and diclofop-methyl 1 ACCase inhibitors (A/1)
30Avena sterilis ssp. ludovicianaSterile oat10967
4 FranceFrance 1996 Wheat fenoxaprop-P-ethyl 17 ACCase inhibitors (A/1)
30Avena sterilis ssp. ludovicianaSterile oat547
5 IranIran 2006 Canola, and Winter wheat clodinafop-propargyl, diclofop-methyl, fenoxaprop-P-ethyl, haloxyfop-methyl, pinoxaden, sethoxydim, and tralkoxydim 79 ACCase inhibitors (A/1)
30Avena sterilis ssp. ludovicianaSterile oat5339
6 IranIran 2009 Wheat iodosulfuron-methyl-sodium, and mesosulfuron-methyl 79 ALS inhibitors (B/2)
30Avena sterilis ssp. ludovicianaSterile oat10985
7 IranIran 2010 Winter wheat clodinafop-propargyl, iodosulfuron-methyl-sodium, and mesosulfuron-methyl 79 Multiple Resistance: 2 Sites of Action
ACCase inhibitors (A/1)
ALS inhibitors (B/2)
30Avena sterilis ssp. ludovicianaSterile oat5541
Literature about Similar Cases

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Cite this site as: Heap, I.  The International Survey of Herbicide Resistant Weeds.  Online.  Internet.  Monday, August 21, 2017 .  Available  www.weedscience.org
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