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Inheritance of glyphosate resistance in rigid ryegrass (Lolium rigidum) from California

  • Marulak Simarmata (a1), Suleiman Bughrara (a1) and Donald Penner
Abstract

Glyphosate resistance was found in a rigid ryegrass population in northern California. A sample of the resistant plants were collected and grown under greenhouse conditions. The objective of this study was to evaluate glyphosate resistance in the progeny of the collected plants by recurrent selection, obtain the homozygous resistant and sensitive lines to establish dose-response curves, and to determine the inheritance of glyphosate resistance in rigid ryegrass. Diverse levels of resistance were observed in the first generation with survival of 89, 59, 45, and 9% from glyphosate at 1x, 2x, 4x, and 8x respectively, where x = 1.12 kg ha−1 isopropylamine salt of glyphosate. Clones of plants that died from 1x were allowed to produce seed and were further subjected to recurrent selection to generate the most sensitive plants (S lines), which died from 0.125x glyphosate. The most resistant plants (R lines) were generated from the survivors receiving 8x glyphosate. The ratio between I50 rates for the glyphosate resistant and the glyphosate sensitive plants was > 100-fold. The R and S lines were crossed reciprocally and F1 progeny of both (R × S) and (S × R) showed intermediate resistance. These survived up to 2x glyphosate. The F2 progeny were generated by intercrossing of F1 plants. The ratio of sensitive, intermediate, and resistant plants in the F2 population before the treatment of glyphosate at 0.125x followed by 8x was 1 : 16, 14 : 16, and 1 : 16 respectively, which corresponded to the Mendelian segregation ratio of two genes. The results indicated that the inheritance of glyphosate resistance in rigid ryegrass from California appeared to be nuclear, incompletely dominant, multigenic, and pollen-transmitted with no indication of maternal inheritance.

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Corresponding author
Corresponding author. Department of Crop and Soil Sciences, Michigan State University, East Lansing, MI 48824; pennerd@msu.edu
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B. Chauvel and J. Gasquez 1994. Relationship between genetic polymorphism and herbicide resistance within Alopercurus myosuroides Huds. Heredity 72:336344.

J. Gasquez 1997. Genetics of herbicide resistance within weeds: factor of evolution, inheritance, and fitness. Pages 181189 in J. J. R. De Prado and L. Garcia-Torres eds. Weeds and Crop Resistance to Herbicides. Dordrecht, The Netherlands: Kluwer.

L. J. Lee and J. Ngim 2000. A first report of glyphosate-resistant goosegrass (Eleusine indica) in Malaysia. Pest. Manage. Sci 56:336339.

D. F. Lorraine-Colwill , S. B. Powles , T. R. Hawkes , and C. Preston 2001. Inheritance of evolved glyphosate resistance in Lolium rigidum Gaud. Theor. Appl. Genet 102:545550.

C. Ng , W. Ratnam , S. Surif , and B. S. Ismail 2004. Inheritance of glyphosate resistance in goosegrass (Eleusine indica). Weed Sci 52:564570.

A. Perez and M. Kogan 2003. Glyphosate-resistant Lolium multiflorum in Chilean orchards. Weed Res 43:1219.

M. J. VanGessel 2001. Glyphosate-resistant horseweed from Delaware. Weed Sci 49:703705.

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Weed Science
  • ISSN: 0043-1745
  • EISSN: 1550-2759
  • URL: /core/journals/weed-science
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