International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
GROUP A/1 RESISTANT JAPANESE FOXTAIL
(Alopecurus japonicus)


ACCase inhibitors (A/1)

China, Anhui, Jiangsu
INTRODUCTION JAPANESE FOXTAIL
Japanese Foxtail (Alopecurus japonicus) is a monocot weed in the Poaceae family.  In China this weed first evolved resistance to Group A/1 herbicides in 2007 and infests Canola, and Winter 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 clodinafop-propargyl, fenoxaprop-P-ethyl, haloxyfop-methyl, and pinoxaden 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 Jan 08, 2014 )

Common NameJapanese Foxtail
SpeciesAlopecurus japonicus
GroupACCase inhibitors (A/1)
Herbicidesclodinafop-propargyl, fenoxaprop-P-ethyl, haloxyfop-methyl, and pinoxaden
LocationChina, Anhui, Jiangsu
Year2007
Situation(s)Canola, and Winter wheat
Contributors - (Alphabetically)Liyao Dong, Li Jun, and Jinxin Wang 
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ACADEMIC ASPECTS

Confirmation Tests

Field, Greenhouse, and Laboratory trials comparing a known susceptible Japanese Foxtail biotype with this Japanese Foxtail 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 Japanese Foxtail indicate that the inheritance is determined by a one gene, dominant trait.  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

Studies on the mechanism of resistance of Group A/1 resistant Japanese Foxtail from China indicate that resistance is due to an altered target site.  There may be a note below or an article discussing the mechanism of resistance in the Fact Sheets and Other Literature
 
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 Japanese Foxtail from China please update the database.
 
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CONTRIBUTING WEED SCIENTISTS

LIYAO DONG
Weed Scientist
Nanjing Agricultural University
Laboratory of Integrated Pest Management on Crops in East China
College of Plant Protection
Nanjing, 210095, Jiangsu
China
Email Liyao Dong
LI JUN
Weed Scientist
Nanjing Agricultural University
Laboratory of Integrated Pest Management on Crops in East China
College of Plant Protection
Nanjing, 210095, Jiangsu
China
Email Li Jun
JINXIN WANG
Professor
Shandong Agricultural University
College Of Plant Protection
Daizong Road 61#
Tai'an, 271018, Shandong
China
Email Jinxin Wang

ACKNOWLEDGEMENTS

The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in China have been instrumental in providing you this information. Particular thanks is given to Liyao Dong, Li Jun, and Jinxin Wang for providing detailed information.
Herbicide Resistant Japanese Foxtail Globally
(Alopecurus japonicus)
Herbicide Resistant Japanese Foxtail Globally
(Alopecurus japonicus)
Drag a column header and drop it here to group by that column
Herbicide Resistant Japanese Foxtail Globally
(Alopecurus japonicus)
#CountryFirstYearSituationActive IngredientsSite of Action
1 ChinaChina 1990 Cereals, and Wheat chlorotoluron 9 PSII inhibitor (Ureas and amides) (C2/7)
5Alopecurus japonicusJapanese Foxtail68
2 ChinaChina 2007 Canola, and Winter wheat clodinafop-propargyl, fenoxaprop-P-ethyl, haloxyfop-methyl, and pinoxaden 9 ACCase inhibitors (A/1)
5Alopecurus japonicusJapanese Foxtail5608
3 ChinaChina 2010 Unspecified paraquat 9 PSI Electron Diverter (D/22)
5Alopecurus japonicusJapanese Foxtail5649
4 ChinaChina 2014 Wheat fenoxaprop-P-ethyl, mesosulfuron-methyl, nicosulfuron, pyribenzoxim, pyroxsulam, and sulfosulfuron 9 Multiple Resistance: 2 Sites of Action
ACCase inhibitors (A/1)
ALS inhibitors (B/2)
5Alopecurus japonicusJapanese Foxtail10955
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Cite this site as: Heap, I.  The International Survey of Herbicide Resistant Weeds.  Online.  Internet.  Saturday, August 19, 2017 .  Available  www.weedscience.org
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