International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
HRAC GROUP 2 (LEGACY B) RESISTANT LOW FALSE-PIMPERNEL
(Lindernia dubia (=Lindernia dubia var. major))


Inhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)

South Korea
INTRODUCTION LOW FALSE-PIMPERNEL
Low False-pimpernel (Lindernia dubia (=Lindernia dubia var. major)) is a dicot weed in the Scrophulariaceae family.  In South Korea this weed first evolved resistance to Group 2 (Legacy B) herbicides in 2000 and infests Rice.   Group 2 (Legacy B) herbicides are known as Inhibition of Acetolactate Synthase (Inhibition of Acetolactate Synthase ).  Research has shown that these particular biotypes are resistant to azimsulfuron, bensulfuron-methyl, cinosulfuron, cyclosulfamuron, ethoxysulfuron, halosulfuron-methyl, imazosulfuron, and pyrazosulfuron-ethyl and they may be cross-resistant to other Group 2 (Legacy B) 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 Dec 21, 2002 )

Common NameLow False-pimpernel
SpeciesLindernia dubia (=Lindernia dubia var. major)
GroupInhibition of Acetolactate Synthase HRAC Group 2 (Legacy B)
Herbicidesazimsulfuron, bensulfuron-methyl, cinosulfuron, cyclosulfamuron, ethoxysulfuron, halosulfuron-methyl, imazosulfuron, and pyrazosulfuron-ethyl
LocationSouth Korea
Year2000
Situation(s)Rice
Contributors - (Alphabetically)Il-Bin Im 
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NOTES ABOUT THIS BIOTYPE

AREAS FOUND

Il-Bin Im
Naju, Kwandsan and Kimje of South Korea

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ACADEMIC ASPECTS

Confirmation Tests

Greenhouse trials comparing a known susceptible Low False-pimpernel biotype with this Low False-pimpernel 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 2 resistant Low False-pimpernel 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 2 (Legacy B) resistant Low False-pimpernel from South Korea please update the database.
 
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CONTRIBUTING WEED SCIENTISTS

IL-BIN IM
CRO
Bio-Plant Environment Research Center
Weed Control
5306-1. BI Center. Honam University
Kwangsan, 506-714, Kwangju
South Korea
Email Il-Bin Im
Web   : Web Site Link

ACKNOWLEDGEMENTS

The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in South Korea have been instrumental in providing you this information. Particular thanks is given to Il-Bin Im for providing detailed information.
Herbicide Resistant Low False-pimpernel Globally
(Lindernia dubia (=Lindernia dubia var. major))
Herbicide Resistant Low False-pimpernel Globally
(Lindernia dubia (=Lindernia dubia var. major))
Drag a column header and drop it here to group by that column
Herbicide Resistant Low False-pimpernel Globally
(Lindernia dubia (=Lindernia dubia var. major))
#CountryFirstYearSituationActive IngredientsSite of Action
1 JapanJapan 1995 Rice bensulfuron-methyl, and imazosulfuron 25 Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
106Lindernia dubia (=Lindernia dubia var. major)Low False-pimpernel539
2 South KoreaSouth Korea 2000 Rice azimsulfuron, bensulfuron-methyl, cinosulfuron, cyclosulfamuron, ethoxysulfuron, halosulfuron-methyl, imazosulfuron, and pyrazosulfuron-ethyl 27 Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
106Lindernia dubia (=Lindernia dubia var. major)Low False-pimpernel5132
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