Comparison of Sensitivity to Glyphosate of Euphorbia davidii Populations = Comparação da Sensibilidade ao Glyphosate de Populações de Euphorbia davidii
Euphorbia davidii (Euphorbiaceae) is a summer annual weed present in the Province of Buenos Aires, Argentina. The aim of this study was to compare the sensitivity to glyphosate of different populations of Euphorbia davidii. Two techniques were used: a seed bioassay and shikimate determination in gly...
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| Format: | info:ar-repo/semantics/artículo |
| Language: | Inglés |
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2018
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| Online Access: | http://www.scielo.br/pdf/pd/v36/0100-8358-PD-36-e018164086.pdf http://hdl.handle.net/20.500.12123/2352 http://dx.doi.org/10.1590/s0100-83582018360100005 |
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| author | Núñez Fré, F.R. Juan, V.F. Yanniccari, Marcos Ezequiel Saint André, H.M. Fernández, R.R. |
| author_browse | Fernández, R.R. Juan, V.F. Núñez Fré, F.R. Saint André, H.M. Yanniccari, Marcos Ezequiel |
| author_facet | Núñez Fré, F.R. Juan, V.F. Yanniccari, Marcos Ezequiel Saint André, H.M. Fernández, R.R. |
| author_sort | Núñez Fré, F.R. |
| collection | INTA Digital |
| description | Euphorbia davidii (Euphorbiaceae) is a summer annual weed present in the Province of Buenos Aires, Argentina. The aim of this study was to compare the sensitivity to glyphosate of different populations of Euphorbia davidii. Two techniques were used: a seed bioassay and shikimate determination in glyphosate-treated plants. Germination rates of seeds belonging to the populations from Espartillar, Barrow, Olavarria and Azul exposed to different concentrations of glyphosate were compared. Plants from the same locations treated with glyphosate were evaluated to determine shikimate levels. The most sensitive population was from Espartillar, with a CE50 (average effective concentration) of 4.00 g e.a. L-1. Based on this finding, the resistance index for each population was 1.76, 2.39 and 2.48 for Azul, Olavarria and Barrow respectively. Regarding glyphosate-treated plants in which shikimate levels were determined, a significant increase in the concentration of this metabolite was only observed in the population from Espartillar. Accumulation of shikimate was not detected in the other groups. These results show differential sensitivity to glyphosate of the evaluated populations. |
| format | info:ar-repo/semantics/artículo |
| id | INTA2352 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| record_format | dspace |
| spelling | INTA23522018-05-08T14:59:35Z Comparison of Sensitivity to Glyphosate of Euphorbia davidii Populations = Comparação da Sensibilidade ao Glyphosate de Populações de Euphorbia davidii Núñez Fré, F.R. Juan, V.F. Yanniccari, Marcos Ezequiel Saint André, H.M. Fernández, R.R. Euphorbia Malezas Malezas Anuales Herbicidas Glifosato Weeds Annual Weeds Herbicides Glyphosate Euphorbia davidii Euphorbia davidii (Euphorbiaceae) is a summer annual weed present in the Province of Buenos Aires, Argentina. The aim of this study was to compare the sensitivity to glyphosate of different populations of Euphorbia davidii. Two techniques were used: a seed bioassay and shikimate determination in glyphosate-treated plants. Germination rates of seeds belonging to the populations from Espartillar, Barrow, Olavarria and Azul exposed to different concentrations of glyphosate were compared. Plants from the same locations treated with glyphosate were evaluated to determine shikimate levels. The most sensitive population was from Espartillar, with a CE50 (average effective concentration) of 4.00 g e.a. L-1. Based on this finding, the resistance index for each population was 1.76, 2.39 and 2.48 for Azul, Olavarria and Barrow respectively. Regarding glyphosate-treated plants in which shikimate levels were determined, a significant increase in the concentration of this metabolite was only observed in the population from Espartillar. Accumulation of shikimate was not detected in the other groups. These results show differential sensitivity to glyphosate of the evaluated populations. Euphorbia davidii (Euphorbiaceae) é uma planta infestante de ciclo anual primaveril-estival presente na Província de Buenos Aires, Argentina. O objetivo deste estudo foi comparar a sensibilidade ao glyphosate de diferentes populações de Euphorbia davidii. Para isso, foram usadas duas técnicas: bioensaio com sementes e determinação dos níveis de chiquimato nas plantas tratadas com glyphosate. Fez-se uma comparação da germinação de sementes de populações provenientes de Espartillar, Barrow, Olavarria e Azul, expostas a diferentes concentrações de glyphosate. Procedeu-se à determinação dos níveis de chiquimato em plantas provenientes das mesmas localidades e tratadas com o herbicida. A população mais sensível foi a de Espartillar, com uma CE50 (concentração efetiva média) de 4,00 g a.e. L-1. Com base neste valor, o índice de resistência de cada local de origem foi de 1,76 , 2,39 e 2,48 para Azul, Olavarría e Barrow, respectivamente. Entre as plantas tratadas, em que os valores de chiquimato foram determinados, observou-se apenas aumento significativo na concentração desse metabólito na população de Espartillar. Nas outras populações não foi identificada qualquer acumulação de chiquimato. Os resultados mostram a sensibilidade diferencial ao glyphosate das populações avaliadas. EEA Barrow Fil: Núñez Fré, F.R. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Agronomía. Cátedra de Terapéutica Vegetal; Argentina. Buenos Aires (provincia). Comisión de Investigaciones Científicas; Argentina Fil: Juan, V.F. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Agronomía. Cátedra de Terapéutica Vegetal; Argentina Fil: Yanniccari, Marcos Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Chacra Experimental Integrada Barrow; Argentina Fil: Saint André, H.M. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Agronomía. Cátedra de Terapéutica Vegetal; Argentina Fil: Fernández, R.R. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Agronomía. Cátedra de Terapéutica Vegetal; Argentina 2018-05-08T14:56:44Z 2018-05-08T14:56:44Z 2018 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://www.scielo.br/pdf/pd/v36/0100-8358-PD-36-e018164086.pdf http://hdl.handle.net/20.500.12123/2352 0100-8358 1806-9681 http://dx.doi.org/10.1590/s0100-83582018360100005 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Planta daninha 36 : 1-9 (2018) |
| spellingShingle | Euphorbia Malezas Malezas Anuales Herbicidas Glifosato Weeds Annual Weeds Herbicides Glyphosate Euphorbia davidii Núñez Fré, F.R. Juan, V.F. Yanniccari, Marcos Ezequiel Saint André, H.M. Fernández, R.R. Comparison of Sensitivity to Glyphosate of Euphorbia davidii Populations = Comparação da Sensibilidade ao Glyphosate de Populações de Euphorbia davidii |
| title | Comparison of Sensitivity to Glyphosate of Euphorbia davidii Populations = Comparação da Sensibilidade ao Glyphosate de Populações de Euphorbia davidii |
| title_full | Comparison of Sensitivity to Glyphosate of Euphorbia davidii Populations = Comparação da Sensibilidade ao Glyphosate de Populações de Euphorbia davidii |
| title_fullStr | Comparison of Sensitivity to Glyphosate of Euphorbia davidii Populations = Comparação da Sensibilidade ao Glyphosate de Populações de Euphorbia davidii |
| title_full_unstemmed | Comparison of Sensitivity to Glyphosate of Euphorbia davidii Populations = Comparação da Sensibilidade ao Glyphosate de Populações de Euphorbia davidii |
| title_short | Comparison of Sensitivity to Glyphosate of Euphorbia davidii Populations = Comparação da Sensibilidade ao Glyphosate de Populações de Euphorbia davidii |
| title_sort | comparison of sensitivity to glyphosate of euphorbia davidii populations comparacao da sensibilidade ao glyphosate de populacoes de euphorbia davidii |
| topic | Euphorbia Malezas Malezas Anuales Herbicidas Glifosato Weeds Annual Weeds Herbicides Glyphosate Euphorbia davidii |
| url | http://www.scielo.br/pdf/pd/v36/0100-8358-PD-36-e018164086.pdf http://hdl.handle.net/20.500.12123/2352 http://dx.doi.org/10.1590/s0100-83582018360100005 |
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