International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
GROUP C1/5 RESISTANT FIGLEAVED GOOSEFOOT
(Chenopodium ficifolium)


Photosystem II inhibitors (C1/5)

Germany
INTRODUCTION FIGLEAVED GOOSEFOOT
Figleaved Goosefoot (Chenopodium ficifolium) is a dicot weed in the Chenopodiaceae family.  In Germany this weed first evolved resistance to Group C1/5 herbicides in 1980 and infests Corn (maize).   Group C1/5 herbicides are known as Photosystem II inhibitors (Inhibition of photosynthesis at photosystem II).  Research has shown that these particular biotypes are resistant to atrazine and they may be cross-resistant to other Group C1/5 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 NameFigleaved Goosefoot
SpeciesChenopodium ficifolium
GroupPhotosystem II inhibitors (C1/5)
Herbicidesatrazine
LocationGermany
Year1980
Situation(s)Corn (maize)
Contributors - (Alphabetically) 
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NOTES ABOUT THIS BIOTYPE

GENERAL

Kees-H (1988). The development of triazine-resistant annual weeds in Bavaria and experience with their control. Die Entwicklung triazinresistenter Samenunkrauter in Bayern und Erfahrungen mit deren Bekampfung. Gesunde-Pflanzen. 1988, 40: 10, 407-412, 414.

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ACADEMIC ASPECTS

Confirmation Tests

Greenhouse trials comparing a known susceptible Figleaved Goosefoot biotype with this Figleaved Goosefoot 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 C1/5 resistant Figleaved Goosefoot 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

Triazine resistant weeds often exhibit a lower relative fitness when compared to susceptible biotypes.  The most common mutation conferring triazine resistance (Ser 264 to Gly mutation of the psbA gene) also causes a reduction in CO2 fixation, quantum yield, and seed and biomass production.  There is no record in this database referring specifically to fitness studies on Group C1/5 resistant Figleaved Goosefoot from Germany.
 
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CONTRIBUTING WEED SCIENTISTS


ACKNOWLEDGEMENTS

The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in Germany have been instrumental in providing you this information. 
Herbicide Resistant Figleaved Goosefoot Globally
(Chenopodium ficifolium)
Herbicide Resistant Figleaved Goosefoot Globally
(Chenopodium ficifolium)
Drag a column header and drop it here to group by that column
Herbicide Resistant Figleaved Goosefoot Globally
(Chenopodium ficifolium)
#CountryFirstYearSituationActive IngredientsSite of Action
1 GermanyGermany 1980 Corn (maize) atrazine 18 Photosystem II inhibitors (C1/5)
48Chenopodium ficifoliumFigleaved Goosefoot443
2 SwitzerlandSwitzerland 1986 Vegetables simazine 41 Photosystem II inhibitors (C1/5)
48Chenopodium ficifoliumFigleaved Goosefoot201
Literature about Similar Cases

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Cite this site as: Heap, I.  The International Survey of Herbicide Resistant Weeds.  Online.  Internet.  Thursday, September 19, 2019 .  Available  www.weedscience.org
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