Recurrent Selection with Low Herbicide Rates and Salt Stress Decrease Sensitivity of <i>Echinochloa colona</i> to Imidazolinone
Weeds represent an increasing challenge for crop systems since they have evolved adaptability to adverse environmental conditions, such as salinity stress. Herbicide effectiveness can be altered by the quality of water in which the weed is growing. This research aimed to study the combined effect of...
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MDPI AG
2021-02-01
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| Series: | Agriculture |
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| Online Access: | https://www.mdpi.com/2077-0472/11/3/187 |
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| author | Lariza Benedetti Vívian Ebeling Viana Pâmela Carvalho-Moore Vinicios Rafael Gehrke Gustavo Maia Souza Edinalvo Rabaioli Camargo Luis Antonio de Avila Nilda Roma-Burgos |
| author_facet | Lariza Benedetti Vívian Ebeling Viana Pâmela Carvalho-Moore Vinicios Rafael Gehrke Gustavo Maia Souza Edinalvo Rabaioli Camargo Luis Antonio de Avila Nilda Roma-Burgos |
| author_sort | Lariza Benedetti |
| collection | DOAJ |
| description | Weeds represent an increasing challenge for crop systems since they have evolved adaptability to adverse environmental conditions, such as salinity stress. Herbicide effectiveness can be altered by the quality of water in which the weed is growing. This research aimed to study the combined effect of salt stress and recurrent selection with a sublethal dose of imidazolinone herbicides in the shifting of the sensitivity of <i>Echinochloa colona</i> (L.) Link (junglerice) to imidazolinone herbicides. This study was divided into two experiments; in experiment I, three recurrent selection cycles were conducted in Pelotas/RS/Brazil with imazapic + imazapyr at 0.125× the field rate; and in experiment II, three recurrent selection cycles were conducted in Fayetteville/AR/USA with imazethapyr, at 0.125× the recommended dose. Salt stress was implemented by irrigation with 120 mM sodium chloride (NaCl) solution. The effective dose for 50% control of the population (ED<sub>50</sub>) values increased from the field population to the second generation (G2) after recurrent selection with a sublethal dose of imidazolinone combined with salt stress, supporting the hypothesis of reduced susceptibility by the combination of these abiotic factors. Recurrent exposure to a sublethal dose of imazapic + imazapyr or imazethapyr, combined with salt stress, reduced susceptibility of <i>Echinochloa colona</i> (L.) plants to imidazolinone herbicides. |
| first_indexed | 2024-03-09T00:34:52Z |
| format | Article |
| id | doaj.art-b901a4e4c3b344bc98a2f1522e153629 |
| institution | Directory Open Access Journal |
| issn | 2077-0472 |
| language | English |
| last_indexed | 2024-03-09T00:34:52Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agriculture |
| spelling | doaj.art-b901a4e4c3b344bc98a2f1522e1536292023-12-11T18:17:15ZengMDPI AGAgriculture2077-04722021-02-0111318710.3390/agriculture11030187Recurrent Selection with Low Herbicide Rates and Salt Stress Decrease Sensitivity of <i>Echinochloa colona</i> to ImidazolinoneLariza Benedetti0Vívian Ebeling Viana1Pâmela Carvalho-Moore2Vinicios Rafael Gehrke3Gustavo Maia Souza4Edinalvo Rabaioli Camargo5Luis Antonio de Avila6Nilda Roma-Burgos7Department of Crop Protection, Federal University of Pelotas, Pelotas 96160-000, RS, BrazilDepartment of Crop Protection, Federal University of Pelotas, Pelotas 96160-000, RS, BrazilDepartment of Crop, Soil and Environmental Sciences, University of Arkansas, Fayetteville, AR 72704, USADepartment of Crop Protection, Federal University of Pelotas, Pelotas 96160-000, RS, BrazilDepartment of Botany, Federal University of Pelotas, Pelotas 96160-000, RS, BrazilDepartment of Crop Protection, Federal University of Pelotas, Pelotas 96160-000, RS, BrazilDepartment of Crop Protection, Federal University of Pelotas, Pelotas 96160-000, RS, BrazilDepartment of Crop, Soil and Environmental Sciences, University of Arkansas, Fayetteville, AR 72704, USAWeeds represent an increasing challenge for crop systems since they have evolved adaptability to adverse environmental conditions, such as salinity stress. Herbicide effectiveness can be altered by the quality of water in which the weed is growing. This research aimed to study the combined effect of salt stress and recurrent selection with a sublethal dose of imidazolinone herbicides in the shifting of the sensitivity of <i>Echinochloa colona</i> (L.) Link (junglerice) to imidazolinone herbicides. This study was divided into two experiments; in experiment I, three recurrent selection cycles were conducted in Pelotas/RS/Brazil with imazapic + imazapyr at 0.125× the field rate; and in experiment II, three recurrent selection cycles were conducted in Fayetteville/AR/USA with imazethapyr, at 0.125× the recommended dose. Salt stress was implemented by irrigation with 120 mM sodium chloride (NaCl) solution. The effective dose for 50% control of the population (ED<sub>50</sub>) values increased from the field population to the second generation (G2) after recurrent selection with a sublethal dose of imidazolinone combined with salt stress, supporting the hypothesis of reduced susceptibility by the combination of these abiotic factors. Recurrent exposure to a sublethal dose of imazapic + imazapyr or imazethapyr, combined with salt stress, reduced susceptibility of <i>Echinochloa colona</i> (L.) plants to imidazolinone herbicides.https://www.mdpi.com/2077-0472/11/3/187adaptationjunglericelow herbicide dose selectionreduced susceptibilitysalinity |
| spellingShingle | Lariza Benedetti Vívian Ebeling Viana Pâmela Carvalho-Moore Vinicios Rafael Gehrke Gustavo Maia Souza Edinalvo Rabaioli Camargo Luis Antonio de Avila Nilda Roma-Burgos Recurrent Selection with Low Herbicide Rates and Salt Stress Decrease Sensitivity of <i>Echinochloa colona</i> to Imidazolinone Agriculture adaptation junglerice low herbicide dose selection reduced susceptibility salinity |
| title | Recurrent Selection with Low Herbicide Rates and Salt Stress Decrease Sensitivity of <i>Echinochloa colona</i> to Imidazolinone |
| title_full | Recurrent Selection with Low Herbicide Rates and Salt Stress Decrease Sensitivity of <i>Echinochloa colona</i> to Imidazolinone |
| title_fullStr | Recurrent Selection with Low Herbicide Rates and Salt Stress Decrease Sensitivity of <i>Echinochloa colona</i> to Imidazolinone |
| title_full_unstemmed | Recurrent Selection with Low Herbicide Rates and Salt Stress Decrease Sensitivity of <i>Echinochloa colona</i> to Imidazolinone |
| title_short | Recurrent Selection with Low Herbicide Rates and Salt Stress Decrease Sensitivity of <i>Echinochloa colona</i> to Imidazolinone |
| title_sort | recurrent selection with low herbicide rates and salt stress decrease sensitivity of i echinochloa colona i to imidazolinone |
| topic | adaptation junglerice low herbicide dose selection reduced susceptibility salinity |
| url | https://www.mdpi.com/2077-0472/11/3/187 |
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