International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
HRAC GROUP 1 (LEGACY A) RESISTANT STERILE OAT
(Avena sterilis)


Inhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)

Cyprus
INTRODUCTION STERILE OAT
Sterile Oat (Avena sterilis) is a monocot weed in the Poaceae family.  In Cyprus this weed first evolved resistance to Group 1 (Legacy A) herbicides in 2010 and infests Spring Barley.   Group 1 (Legacy A) herbicides are known as Inhibition of Acetyl CoA Carboxylase (Inhibition of Acetyl CoA Carboxylase ).  Research has shown that these particular biotypes are resistant to diclofop-methyl and they may be cross-resistant to other Group 1 (Legacy A) 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 Aug 07, 2012 )

Common NameSterile Oat
SpeciesAvena sterilis
GroupInhibition of Acetyl CoA Carboxylase HRAC Group 1 (Legacy A)
Herbicidesdiclofop-methyl
LocationCyprus
Year2010
Situation(s)Spring Barley
Contributors - (Alphabetically)Yildiz Nemli, Suleyman Turkseven, and Ahmet Uludag 
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ACADEMIC ASPECTS

Confirmation Tests

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 HRAC Group 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 1 (Legacy A) resistant Sterile Oat from Cyprus please update the database.
 
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CONTRIBUTING WEED SCIENTISTS

YILDIZ NEMLI
Professor
Ege University
Plant Protection Department
1108 Edgewood Blvd
Bornrva/izmir
Turkey
Email Yildiz Nemli
SULEYMAN TURKSEVEN
Research Asistant
Ege Universty
Faculty of Agriculture
Ege University
Faculty of Agriculture, Departmant of Plant Protection, Weed Science Labratuvary
Ýzmir, 35100
Turkey
Email Suleyman Turkseven
AHMET ULUDAG
Professor
Canakkale Onsekiz Mart University
Plant Protection
COMU, Ziraat Fakultesi
Bitki Koruma Bolumu, Terzioglu Yerleskesi
Canakkale, 17020, Canakkale
Turkey
Email Ahmet Uludag

ACKNOWLEDGEMENTS

The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in Cyprus have been instrumental in providing you this information. Particular thanks is given to Yildiz Nemli, Suleyman Turkseven, and Ahmet Uludag for providing detailed information.
Herbicide Resistant Sterile Oat Globally
(Avena sterilis)
Herbicide Resistant Sterile Oat Globally
(Avena sterilis)
Drag a column header and drop it here to group by that column
Herbicide Resistant Sterile Oat Globally
(Avena sterilis)
#CountryFirstYearSituationActive IngredientsSite of Action
1 Australia (South Australia) AustraliaSouth Australia1989 Canola, Chickpea, Clover, Faba beans, Lentils, Lupins, Peas, and Wheat diclofop-methyl, fluazifop-butyl, and sethoxydim 1 Inhibition of Acetyl CoA Carboxylase ( HRAC Group 1 (Legacy A)
29Avena sterilisSterile Oat21
2 Australia (New South Wales ) AustraliaNew South Wales 1989 Canola, Chickpea, and Wheat diclofop-methyl, fluazifop-butyl, and sethoxydim 1 Inhibition of Acetyl CoA Carboxylase ( HRAC Group 1 (Legacy A)
29Avena sterilisSterile Oat5029
3 CyprusCyprus 2010 Spring Barley diclofop-methyl 53 Inhibition of Acetyl CoA Carboxylase ( HRAC Group 1 (Legacy A)
29Avena sterilisSterile Oat5643
4 FranceFrance 2006 Wheat iodosulfuron-methyl-Na, mesosulfuron-methyl, metsulfuron-methyl, and pyroxsulam 17 Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
29Avena sterilisSterile Oat9937
5 GreeceGreece 2009 Wheat clodinafop-propargyl, diclofop-methyl, fenoxaprop-ethyl, pinoxaden, and tralkoxydim 19 Inhibition of Acetyl CoA Carboxylase ( HRAC Group 1 (Legacy A)
29Avena sterilisSterile Oat6740
6 IranIran 2008 Wheat pinoxaden 79 Inhibition of Acetyl CoA Carboxylase ( HRAC Group 1 (Legacy A)
29Avena sterilisSterile Oat5378
7 IranIran 2009 Wheat iodosulfuron-methyl-Na, and mesosulfuron-methyl 79 Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
29Avena sterilisSterile Oat5376
8 IsraelIsrael 2006 Wheat clodinafop-propargyl, cycloxydim, and fenoxaprop-ethyl 23 Inhibition of Acetyl CoA Carboxylase ( HRAC Group 1 (Legacy A)
29Avena sterilisSterile Oat5300
9 ItalyItaly 1992 Wheat clodinafop-propargyl, cycloxydim, diclofop-methyl, pinoxaden, sethoxydim, and tralkoxydim 24 Inhibition of Acetyl CoA Carboxylase ( HRAC Group 1 (Legacy A)
29Avena sterilisSterile Oat1128
10 ItalyItaly 2004 Durum wheat clodinafop-propargyl, cycloxydim, iodosulfuron-methyl-Na, mesosulfuron-methyl, and pinoxaden 24 Multiple Resistance: 2 Sites of Action
Inhibition of Acetyl CoA Carboxylase ( HRAC Group 1 (Legacy A)
Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
29Avena sterilisSterile Oat5632
11 ItalyItaly 2007 Durum wheat iodosulfuron-methyl-Na, and mesosulfuron-methyl 24 Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
29Avena sterilisSterile Oat8908
12 SpainSpain 2023 Wheat clodinafop-propargyl, and pinoxaden 38 Inhibition of Acetyl CoA Carboxylase ( HRAC Group 1 (Legacy A)
29Avena sterilisSterile Oat27282
13 TurkeyTurkey 1997 Wheat clodinafop-propargyl, diclofop-methyl, fenoxaprop-ethyl, and tralkoxydim 71 Inhibition of Acetyl CoA Carboxylase ( HRAC Group 1 (Legacy A)
29Avena sterilisSterile Oat5101
14 TurkeyTurkey 2008 clodinafop-propargyl, and pyroxsulam 71 Multiple Resistance: 2 Sites of Action
Inhibition of Acetyl CoA Carboxylase ( HRAC Group 1 (Legacy A)
Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
29Avena sterilisSterile Oat5402
15 United KingdomUnited Kingdom 1993 Cereals, and Wheat fenoxaprop-ethyl, flamprop-methyl, fluazifop-butyl, imazamethabenz-methyl, iodosulfuron-methyl-Na, mesosulfuron-methyl, and tralkoxydim 44 Multiple Resistance: 3 Sites of Action
Inhibition of Acetyl CoA Carboxylase ( HRAC Group 1 (Legacy A)
Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
Antimicrotubule mitotic disrupter ( HRAC Group 0 (Legacy Z)
29Avena sterilisSterile Oat354
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