International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
GROUP B/2 RESISTANT WILD BISHOP
(Bifora radians)


ALS inhibitors (B/2)

Turkey, Middle Anatolia and Black Sea
INTRODUCTION WILD BISHOP
Wild Bishop (Bifora radians) is a dicot weed in the Apiaceae family.  In Turkey this weed first evolved resistance to Group B/2 herbicides in 2008 and infests Winter wheat.   Group B/2 herbicides are known as ALS inhibitors (Inhibition of acetolactate synthase ALS (acetohydroxyacid synthase AHAS)).  Research has shown that these particular biotypes are resistant to chlorsulfuron, iodosulfuron-methyl-sodium, mesosulfuron-methyl, thifensulfuron-methyl, triasulfuron, and tribenuron-methyl and they may be cross-resistant to other Group B/2 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 29, 2015 )

Common NameWild Bishop
SpeciesBifora radians
GroupALS inhibitors (B/2)
Herbicideschlorsulfuron, iodosulfuron-methyl-sodium, mesosulfuron-methyl, thifensulfuron-methyl, triasulfuron, and tribenuron-methyl
LocationTurkey, Middle Anatolia and Black Sea
Year2008
Situation(s)Winter wheat
Contributors - (Alphabetically)Emine Kaya Altop, and Hüsrev Mennan 
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NOTES ABOUT THIS BIOTYPE

GENERAL

Hüsrev Mennan

Tolerance of two Bifora radians Bieb populations to ALS inhibitors in winter wheat. 2011.  Husrev Mennan, Jens C Streibig, Mathieu Ngouajioc and Emine Kaya. Pest Manag Sci 2012; 68: 116–122.

Full Paper in PDF: http://www.weedscience.org/Documents/ShowDocuments.aspx?DocumentID=1352

 

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ACADEMIC ASPECTS

Confirmation Tests

Field trials comparing a known susceptible Wild Bishop biotype with this Wild Bishop 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 B/2 resistant Wild Bishop 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 B/2 resistant Wild Bishop from Turkey please update the database.
 
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CONTRIBUTING WEED SCIENTISTS

EMINE KAYA ALTOP
Weed Scientist
Ondokuz Mayis University
Department Of Plant Protection
Faculty of Agriculture
Samsun, 55139, Kurupelit/Samsun
Turkey
Email Emine Kaya Altop
HÜSREV MENNAN
Prof. Dr.
University Of Ondokuzmayýs
Department Of Plant Protection
Atakum
Samsun, 55319, Kurupelit/Samsun
Turkey
Email Hüsrev Mennan

ACKNOWLEDGEMENTS

The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in Turkey have been instrumental in providing you this information. Particular thanks is given to Emine Kaya Altop, and Hüsrev Mennan for providing detailed information.
Herbicide Resistant Wild Bishop Globally
(Bifora radians)
Herbicide Resistant Wild Bishop Globally
(Bifora radians)
Drag a column header and drop it here to group by that column
Herbicide Resistant Wild Bishop Globally
(Bifora radians)
#CountryFirstYearSituationActive IngredientsSite of Action
1 TurkeyTurkey 2008 Winter wheat chlorsulfuron, iodosulfuron-methyl-sodium, mesosulfuron-methyl, thifensulfuron-methyl, triasulfuron, and tribenuron-methyl 71 ALS inhibitors (B/2)
322Bifora radiansWild Bishop10962
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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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