| |
| Web URL(s): | https://dl.sciencesocieties.org/publications/jeq/articles/33/4/1376
Last checked: 11/07/2016
Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/jeq/pdfs/33/4/1376
Last checked: 11/08/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
|---|
| Publication Type:
| Refereed |
|---|
| Author(s): | Martínez-Ghersa, M. Alejandra;
Vila Aiub, Martín M.;
Ghersa, Claudio M.;
Gundel, Pedro;
Satorre, Emilio H. |
|---|
| Author Affiliation: | Martínez-Ghersa, Vila Aiub, Ghersa, and Gundel: Departamento de Recursos Naturales y Ambiente; and Satorre: Departamento de Produccion Vegetal, Facultad de Agronomia, Universidad de Buenos Aires, Buenos Aires, Argentina |
|---|
| Title: | Herbicide selection of Italian ryegrass under different levels of UVB radiation |
|---|
| Section: | Plant and environment interactions
Other records with the "Plant and environment interactions" Section
|
|---|
| Source: | Journal of Environmental Quality. Vol. 33, No. 4, July/August 2004, p. 1376-1386. |
|---|
| Publishing Information: | Madison, Wisconsin: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America |
|---|
| # of Pages: | 11 |
|---|
| Keywords: | TIC Keywords: Lolium multiflorum; Herbicides; Ultraviolet radiation; Environmental stress; Herbicide resistance; Diclofop; Synergism
|
|---|
| Abstract/Contents: | "Ultraviolet-B radiation is an environmental stress for plants and this situation could become aggravated in the next decades. In this study we used Italian ryegrass (Lolium multiflorum Lam.) as a model system to test whether an environmental stress derived from global change, such as UVB, can influence the efficacy of control prodedures and evolution toward herbicide resistance. We grew three generations of Italian ryegrass plants with and without UVB light and subjected them to a series of diclofop-methyl {(±)-2-[4-(2,4-dichlorophenoxy) phenoxy] propanoic acid, methyl ester} doses. The effect of selection history was tested with herbicide dose response. The effect of herbicide application on plant survival and biomass varied significantly among herbicide doses and with absence or presence of UVB light. In the absence of herbicide, the decrease in individual fecundity with increasing plant density was similar under both no-UVB and UVB light treatments. Only plants growing without UVB light increased production of reproductive structures in response to the decrease in density caused by herbicide application. Our study shows that UVB light was a weak stress factor for the ryegrass plants. However, when herbicide selection pressure was high, UVB light reduced the evolution toward herbicide tolerance. When selection pressure on the parental plants was lower, the two stress factors had a synergistic effect, causing changes in herbicide efficacy that in turn had demographic and evolutionary consequences. In the field, these interactions between stress factors might be of significance for annual weeds in which seed output is a major determinant in fitness." |
|---|
| Language: | English |
|---|
| References: | 44 |
|---|
| Note: | Figures
Tables
Graphs |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Martínez-Ghersa, M. A., M. M. Vila Aiub, C. M. Ghersa, P. Gundel, and E. H. Satorre. 2004. Herbicide selection of Italian ryegrass under different levels of UVB radiation. J. Environ. Qual. 33(4):p. 1376-1386. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=97311 |
| If there are problems with this record, send us feedback about record 97311. |
| Choices for finding the above item: |
|---|
| Web URL(s):
https://dl.sciencesocieties.org/publications/jeq/articles/33/4/1376
Last checked: 11/07/2016
Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/jeq/pdfs/33/4/1376
Last checked: 11/08/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: S 900 .J6 |
| 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) |
