CONTROL OF VOLUNTEER CORN AS A FUNCTION OF LIGHT RESTRICTION PERIODS AFTER DIQUAT APPLICATION
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Caatinga |
Texto Completo: | https://periodicos.ufersa.edu.br/caatinga/article/view/9623 |
Resumo: | The action of photosystem I (PSI) inhibiting herbicides depends on light to cause oxidative stress in plants. However, their translocation is inhibited due to their rapid action in the presence of light. The aim was to evaluate the efficacy of the herbicide diquat for control of corn plants subjected to different periods of absence of light after application. Two experiments (field and greenhouse) were conducted, applying the herbicide diquat (200 g a.i. ha-1) to maize plants at stage V4. The plants were subjected to different periods of absence of light after diquat application: 0; 1; 2; 3; 4; 5 and 6 hours. A treatment without herbicide application was used as a control. The control (%) and biomass of corn plants were evaluated in both experiments, and photosynthetic activity and hydrogen peroxide (H2O2) accumulation in leaves were evaluated in the greenhouse experiment. The results showed that diquat needs at least 5 hours of absence of light after application to fully control corn plants. The plants recovered when using shorter periods (4 hours or less) of darkness, and injuries were restricted to points where the herbicide had contact with the plant. The ability of plants to recover was related to the higher photosynthetic activity and oxidative stress induction due to early light exposure. Thus, the lower production of H2O2 in plants kept in the dark for longer periods after herbicide application allows the translocation of the herbicide to meristems, which prevents regrowth of corn plants. |
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CONTROL OF VOLUNTEER CORN AS A FUNCTION OF LIGHT RESTRICTION PERIODS AFTER DIQUAT APPLICATIONCONTROLE DE MILHO VOLUNTÁRIO EM FUNÇÃO DE PERÍODOS DE AUSÊNCIA LUMINOSA APÓS A APLICAÇÃO DE DIQUATBipiridilos. Fluorescência da clorofila. Estresse Oxidativo. Inibidores do fotossistema I. Zea mays L.Bipyridyliums. Chlorophyll fluorescence. Oxidative stress. Photosystem I inhibiting herbicides. Zea mays L.The action of photosystem I (PSI) inhibiting herbicides depends on light to cause oxidative stress in plants. However, their translocation is inhibited due to their rapid action in the presence of light. The aim was to evaluate the efficacy of the herbicide diquat for control of corn plants subjected to different periods of absence of light after application. Two experiments (field and greenhouse) were conducted, applying the herbicide diquat (200 g a.i. ha-1) to maize plants at stage V4. The plants were subjected to different periods of absence of light after diquat application: 0; 1; 2; 3; 4; 5 and 6 hours. A treatment without herbicide application was used as a control. The control (%) and biomass of corn plants were evaluated in both experiments, and photosynthetic activity and hydrogen peroxide (H2O2) accumulation in leaves were evaluated in the greenhouse experiment. The results showed that diquat needs at least 5 hours of absence of light after application to fully control corn plants. The plants recovered when using shorter periods (4 hours or less) of darkness, and injuries were restricted to points where the herbicide had contact with the plant. The ability of plants to recover was related to the higher photosynthetic activity and oxidative stress induction due to early light exposure. Thus, the lower production of H2O2 in plants kept in the dark for longer periods after herbicide application allows the translocation of the herbicide to meristems, which prevents regrowth of corn plants.A ação de herbicidas inibidores do fotossistema I (FSI) depende da luz para causar estresse oxidativo nas plantas. No entanto, sua translocação é autoinibida devido à sua rápida ação na presença de luz. Objetivou-se avaliar a eficácia do herbicida diquat no controle de plantas de milho submetidas a diferentes períodos de ausência de luz após a aplicação. Foram realizados dois experimentos (campo e casa de vegetação), aplicando diquat (200 g ia ha-1) em plantas de milho em V4. As plantas foram submetidas a 0; 1; 2; 3; 4; 5 e 6 horas de ausência luminosa após a aplicação. Um tratamento sem aplicação de herbicida foi usado como controle. O controle (%) e a biomassa das plantas foram avaliados em ambos os experimentos, e a atividade fotossintética e o acúmulo foliar de peróxido de hidrogênio (H2O2) foram avaliados no experimento em casa de vegetação. Os resultados demonstraram que o diquat necessita de pelo menos 5 horas de ausência de luz após a aplicação para controlar totalmente as plantas. As plantas se recuperaram em períodos mais curtos (4 horas ou menos) de escuro, e as injúrias ficaram restritas aos pontos onde o herbicida teve contato com a planta. A capacidade de recuperação das plantas relacionou-se à maior atividade fotossintética e indução de estresse oxidativo pela exposição precoce à luz. Portanto, a menor produção de H2O2 em plantas mantidas no escuro por maior período após a aplicação do herbicida permite a translocação do herbicida para os meristemas, o que previne a rebrota.Universidade Federal Rural do Semi-Árido2022-04-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufersa.edu.br/caatinga/article/view/962310.1590/1983-21252022v35n206rcREVISTA CAATINGA; Vol. 35 No. 2 (2022); 299-307Revista Caatinga; v. 35 n. 2 (2022); 299-3071983-21250100-316Xreponame:Revista Caatingainstname:Universidade Federal Rural do Semi-Árido (UFERSA)instacron:UFERSAenghttps://periodicos.ufersa.edu.br/caatinga/article/view/9623/10900Copyright (c) 2022 Revista Caatingainfo:eu-repo/semantics/openAccessOliveira, Guilherme Mendes Pio deOliveira, Halley Caixeta deSilva, Marcelo Augusto de Aguiar eDalazen, Giliardi2023-07-03T17:40:44Zoai:ojs.periodicos.ufersa.edu.br:article/9623Revistahttps://periodicos.ufersa.edu.br/index.php/caatinga/indexPUBhttps://periodicos.ufersa.edu.br/index.php/caatinga/oaipatricio@ufersa.edu.br|| caatinga@ufersa.edu.br1983-21250100-316Xopendoar:2024-04-29T09:46:51.479815Revista Caatinga - Universidade Federal Rural do Semi-Árido (UFERSA)true |
dc.title.none.fl_str_mv |
CONTROL OF VOLUNTEER CORN AS A FUNCTION OF LIGHT RESTRICTION PERIODS AFTER DIQUAT APPLICATION CONTROLE DE MILHO VOLUNTÁRIO EM FUNÇÃO DE PERÍODOS DE AUSÊNCIA LUMINOSA APÓS A APLICAÇÃO DE DIQUAT |
title |
CONTROL OF VOLUNTEER CORN AS A FUNCTION OF LIGHT RESTRICTION PERIODS AFTER DIQUAT APPLICATION |
spellingShingle |
CONTROL OF VOLUNTEER CORN AS A FUNCTION OF LIGHT RESTRICTION PERIODS AFTER DIQUAT APPLICATION Oliveira, Guilherme Mendes Pio de Bipiridilos. Fluorescência da clorofila. Estresse Oxidativo. Inibidores do fotossistema I. Zea mays L. Bipyridyliums. Chlorophyll fluorescence. Oxidative stress. Photosystem I inhibiting herbicides. Zea mays L. |
title_short |
CONTROL OF VOLUNTEER CORN AS A FUNCTION OF LIGHT RESTRICTION PERIODS AFTER DIQUAT APPLICATION |
title_full |
CONTROL OF VOLUNTEER CORN AS A FUNCTION OF LIGHT RESTRICTION PERIODS AFTER DIQUAT APPLICATION |
title_fullStr |
CONTROL OF VOLUNTEER CORN AS A FUNCTION OF LIGHT RESTRICTION PERIODS AFTER DIQUAT APPLICATION |
title_full_unstemmed |
CONTROL OF VOLUNTEER CORN AS A FUNCTION OF LIGHT RESTRICTION PERIODS AFTER DIQUAT APPLICATION |
title_sort |
CONTROL OF VOLUNTEER CORN AS A FUNCTION OF LIGHT RESTRICTION PERIODS AFTER DIQUAT APPLICATION |
author |
Oliveira, Guilherme Mendes Pio de |
author_facet |
Oliveira, Guilherme Mendes Pio de Oliveira, Halley Caixeta de Silva, Marcelo Augusto de Aguiar e Dalazen, Giliardi |
author_role |
author |
author2 |
Oliveira, Halley Caixeta de Silva, Marcelo Augusto de Aguiar e Dalazen, Giliardi |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Oliveira, Guilherme Mendes Pio de Oliveira, Halley Caixeta de Silva, Marcelo Augusto de Aguiar e Dalazen, Giliardi |
dc.subject.por.fl_str_mv |
Bipiridilos. Fluorescência da clorofila. Estresse Oxidativo. Inibidores do fotossistema I. Zea mays L. Bipyridyliums. Chlorophyll fluorescence. Oxidative stress. Photosystem I inhibiting herbicides. Zea mays L. |
topic |
Bipiridilos. Fluorescência da clorofila. Estresse Oxidativo. Inibidores do fotossistema I. Zea mays L. Bipyridyliums. Chlorophyll fluorescence. Oxidative stress. Photosystem I inhibiting herbicides. Zea mays L. |
description |
The action of photosystem I (PSI) inhibiting herbicides depends on light to cause oxidative stress in plants. However, their translocation is inhibited due to their rapid action in the presence of light. The aim was to evaluate the efficacy of the herbicide diquat for control of corn plants subjected to different periods of absence of light after application. Two experiments (field and greenhouse) were conducted, applying the herbicide diquat (200 g a.i. ha-1) to maize plants at stage V4. The plants were subjected to different periods of absence of light after diquat application: 0; 1; 2; 3; 4; 5 and 6 hours. A treatment without herbicide application was used as a control. The control (%) and biomass of corn plants were evaluated in both experiments, and photosynthetic activity and hydrogen peroxide (H2O2) accumulation in leaves were evaluated in the greenhouse experiment. The results showed that diquat needs at least 5 hours of absence of light after application to fully control corn plants. The plants recovered when using shorter periods (4 hours or less) of darkness, and injuries were restricted to points where the herbicide had contact with the plant. The ability of plants to recover was related to the higher photosynthetic activity and oxidative stress induction due to early light exposure. Thus, the lower production of H2O2 in plants kept in the dark for longer periods after herbicide application allows the translocation of the herbicide to meristems, which prevents regrowth of corn plants. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-04-04 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.ufersa.edu.br/caatinga/article/view/9623 10.1590/1983-21252022v35n206rc |
url |
https://periodicos.ufersa.edu.br/caatinga/article/view/9623 |
identifier_str_mv |
10.1590/1983-21252022v35n206rc |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://periodicos.ufersa.edu.br/caatinga/article/view/9623/10900 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2022 Revista Caatinga info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2022 Revista Caatinga |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal Rural do Semi-Árido |
publisher.none.fl_str_mv |
Universidade Federal Rural do Semi-Árido |
dc.source.none.fl_str_mv |
REVISTA CAATINGA; Vol. 35 No. 2 (2022); 299-307 Revista Caatinga; v. 35 n. 2 (2022); 299-307 1983-2125 0100-316X reponame:Revista Caatinga instname:Universidade Federal Rural do Semi-Árido (UFERSA) instacron:UFERSA |
instname_str |
Universidade Federal Rural do Semi-Árido (UFERSA) |
instacron_str |
UFERSA |
institution |
UFERSA |
reponame_str |
Revista Caatinga |
collection |
Revista Caatinga |
repository.name.fl_str_mv |
Revista Caatinga - Universidade Federal Rural do Semi-Árido (UFERSA) |
repository.mail.fl_str_mv |
patricio@ufersa.edu.br|| caatinga@ufersa.edu.br |
_version_ |
1797674028951928832 |