Glyphosate and Saflufenacil: Elucidating their Combined Action on the Control of Glyphosate-Resistant Conyza bonariensis
| Autor: | Leandro Vargas, Ivan Ricardo Carvalho, Luis Antonio de Avila, Dirceu Agostinetto, Cristiano Piasecki |
|---|---|
| Přispěvatelé: | CRISTIANO PIASECKI, Department of Crop Protection, Federal University of Pelotas, Pelotas, RS 96160-000, Brazil, luis.avila@ufpel.edu.br (L.A.A.), dirceu_agostinetto@ufpel.edu.br (D.A.), IVAN R. CARVALHO, Department of Plant Breeding, Federal University of Pelotas (UFPel), Pelotas, RS 96010-610, Brazil, ivan.ricardo.carvalho@ufpel.edu.br, LUIS A. AVILA, Department of Crop Protection, Federal University of Pelotas, Pelotas, RS 96160-000, Brazil, DIRCEU AGOSTINETTO, Department of Crop Protection, Federal University of Pelotas, Pelotas, RS 96160-000, Brazil, LEANDRO VARGAS, CNPT. |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Herbicide synergism Plant Science SHikimic-acid medicine.disease_cause reactive oxygen species (ROS) 01 natural sciences Lipid peroxidation shikimic-acid chemistry.chemical_compound Animal science medicine oxidative stress lcsh:Agriculture (General) Lipidic peroxidation Saflufenacil Reactive oxygen species (ROS) 04 agricultural and veterinary sciences Shikimic acid lcsh:S1-972 herbicide resistance management herbicide synergism chemistry Oxidative stress Glyphosate lipidic peroxidation 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Herbicide resistance management Agronomy and Crop Science After treatment mixture of herbicides 010606 plant biology & botany Food Science Mixture of herbicides |
| Zdroj: | Agriculture, Vol 10, Iss 236, p 236 (2020) Agriculture Volume 10 Issue 6 Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice) Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
| ISSN: | 2077-0472 |
| Popis: | Synergic effects of glyphosate and saflufenacil have been reported to control Conyza spp. However, the mechanism of this synergic combination is unknown. The objectives of this study were to investigate the effects of the combination of glyphosate and saflufenacil on the control and resistance status of glyphosate-resistant (GR) C. bonariensis, as well as on oxidative stress and lipidic peroxidation. Glyphosate-resistant and glyphosate-sensitive (GS) biotypes were treated with different rates of saflufenacil, glyphosate, and glyphosate combined with saflufenacil. The combination of glyphosate (1480 g ae ha-1) and saflufenacil (&ge 15 g ha&minus 1) presented the best control of GR plants compared with their individual effects. It also reduced the resistance factor from 19.6 to 4.6 (4.3-fold) and represents a good alternative for resistance management. The combination of glyphosate and saflufenacil resulted in higher oxidative stress and lipidic peroxidation compared with the effects of either herbicide alone. The oxidative stress and lipid peroxidation promoted by the combination of the herbicides occurred earlier after treatment and remained at higher levels over a longer period (12&ndash 192 h) compared with their individual results. The combined oxidative stress and lipid peroxidation at high levels over a long time is likely to be one reason that the combination of glyphosate and saflufenacil effectively controls GR C. bonariensis. |
| Databáze: | OpenAIRE |
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