| |
| Web URL(s): | http://onlinelibrary.wiley.com/doi/10.1046/j.0043-1737.2003.00358.x/full/
Last checked: 01/17/2014
Access conditions: Item is within a limited-access web site
http://onlinelibrary.wiley.com/doi/10.1046/j.0043-1737.2003.00358.x/pdf
Last checked: 01/17/2014
Requires: PDF Reader
Access conditions: Item is within a limited-access web site |
|---|
| Publication Type:
| Refereed |
|---|
| Author(s): | Neve, P.;
Diggle, A. J.;
Smith, F. P.;
Powles, S. B. |
|---|
| Author Affiliation: | Neve and Powles: Western Australian Herbicide Resistance Initiative, School of Plant Biology, University of Western Australia, Crawley, Western Australia, Australia; Diggle: Western Australian Department of Agriculture, South Perth, Western Australia, Australia; Smith: CSIRO Sustainable Ecosystems, Wembley, Western Australia, Australia |
|---|
| Title: | Simulating evolution of glyphosate resistance in Lolium rigidum I: Population biology of a rare resistance trait |
|---|
| Section: | Research papers
Other records with the "Research papers" Section
|
|---|
| Source: | Weed Research. Vol. 43, No. 6, December 2003, p. 404-417. |
|---|
| Publishing Information: | Oxford: Blackwell Scientific Publications |
|---|
| # of Pages: | 14 |
|---|
| Keywords: | TIC Keywords: Evolution; Glyphosate; Herbicide resistance; Lolium rigidum; Postemergence herbicides; Models
|
|---|
| Abstract/Contents: | "Despite frequent use for the past 25 years, resistance to glyphosate has evolved in few weed biotypes. The propensity for evolution of resistance is not the same for all herbicides, and glyphosate has a relatively low resistance risk. The reasons for these differences are not entirely understood. A previously published two-herbicide resistance model has been modified to explore biological and management factors that account for observed rates of evolution of glyphosate resistance. Resistance to a post-emergence herbicide was predicted to evolve more rapidly than it did to glyphosate, even when both were applied every year and had the same control efficacy. Glyphosate is applied earlier in the growing season when fewer weeds have emerged and hence exerts less selection pressure on populations. The evolution of glyphosate resistance was predicted to arise more rapidly when glyphosate applications were later in the growing season. In simulations that assumed resistance to The post-emergence herbicide did not evolve, the evolution of glyphosate resistance was less rapid, because post-emergence herbicides were effectively controlling rare glyphosate-resistant individuals. On their own, these management-related factors could not entirely account for rates of evolution of resistance to glyphostate observed in the field. In subsequent analyses, population genetic parameter values (initial allele frequency, dominance and fitness) were selected on the basis of empirical data from a glyphosate-resistant Lolium rigidum population. Predicted rates of evolution of resistance were similar to those observed in the field. Together, the timing of glyphosate applications, the rarity of glyphosate-resistant mutants, the incomplete dominance of glyphosate-resistant alleles and pleiotropic fitness costs associated with glyphosate resistance, all contribute to its relatively slow evolution in the field" |
|---|
| Language: | English |
|---|
| References: | 40 |
|---|
| See Also: | See also part 2 "Simulating evolution of glyphosate resistance in Lolium rigidum II: past, present, and future glyphosate use in Australian cropping," Weed Research, 43(6), December 2003, p. 418-427, R=92570 R=92570 |
|---|
| Note: | Includes appendix; p. 416-417
Figures
Tables
Graphs |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Neve, P., A. J. Diggle, F. P. Smith, and S. B. Powles. 2003. Simulating evolution of glyphosate resistance in Lolium rigidum I: Population biology of a rare resistance trait. Weed Res. 43(6):p. 404-417. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=92561 |
| If there are problems with this record, send us feedback about record 92561. |
| Choices for finding the above item: |
|---|
| Web URL(s):
http://onlinelibrary.wiley.com/doi/10.1046/j.0043-1737.2003.00358.x/full/
Last checked: 01/17/2014
Access conditions: Item is within a limited-access web site
http://onlinelibrary.wiley.com/doi/10.1046/j.0043-1737.2003.00358.x/pdf
Last checked: 01/17/2014
Requires: PDF Reader
Access conditions: Item is within a limited-access web site |
| 
MSU catalog number: SB 599 .W4 |
| Find from within TIC:
Digitally in TIC by record number. |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
