WATER DEFICIT ON GROWTH AND PHYSIOLOGICAL INDICATORS OF Bidens pilosa L. AND Bidens subalternans DC.

Detalhes bibliográficos
Autor(a) principal: Freitas, Marcio Alexandre Moreira de
Data de Publicação: 2021
Outros Autores: Lins, Hamurábi Anizio, Souza, Matheus de Freitas, Carneiro, Gabriella Daier Oliveira Pessoa, Mendonça, Vander, Silva, Daniel Valadão
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista Caatinga
Texto Completo: https://periodicos.ufersa.edu.br/caatinga/article/view/9715
Resumo: Stress caused by soil water deficit has been one of the main factors that inhibit plant growth. The knowledge of the factors related to the behavior of weed species under water stress conditions can contribute to the elaboration of effective control strategies. Two experiments were carried out to evaluate the effects of the degree and duration of water deficit on physiological and growth indicators of two weed species (Bidens pilosa L. and Bidens subalternans DC.). The stress degree was simulated by four soil moisture: 100, 75, 50, 25% of total soil capacity. The water deficit duration was evaluated by five intervals of water supply: 0, 1, 2, 3, 4, 5, and 6 days. The experiments were carried out in a randomized complete block design with six replicates. The evaluated variables were: the photosynthetic rate (A; μmol CO2 m-2), stomatal conductance (gs; μmol H2O m-2 s-1), transpiration (E; mmol H2O m-2 s-1), number of leaves per plant, and dry matter of the roots, stems, leaves, and total. The results showed that the species of B. pilosa and B. subalternans tolerate low water availability conditions. Low stomatal opening and loss of leaves are mechanisms that ensure the survival of Bidens plants to the water deficit. However, water stress close to 25% of field capacity caused the death of species. The B. subalternans had higher sensitivity to the water deficit, showing a lower dry matter of leaf, stem, and root than B. pilosa.  
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spelling WATER DEFICIT ON GROWTH AND PHYSIOLOGICAL INDICATORS OF Bidens pilosa L. AND Bidens subalternans DC.DÉFICIT HÍDRICO SOBRE INDICADORES DE CRESCIMENTO E FISIOLÓGICOS DE Bidens pilosa L. E Bidens subalternans DC.Planta daninha. Estresse abiótico. Picão preto.Weed. Abiotic stress. Beggarticks.Stress caused by soil water deficit has been one of the main factors that inhibit plant growth. The knowledge of the factors related to the behavior of weed species under water stress conditions can contribute to the elaboration of effective control strategies. Two experiments were carried out to evaluate the effects of the degree and duration of water deficit on physiological and growth indicators of two weed species (Bidens pilosa L. and Bidens subalternans DC.). The stress degree was simulated by four soil moisture: 100, 75, 50, 25% of total soil capacity. The water deficit duration was evaluated by five intervals of water supply: 0, 1, 2, 3, 4, 5, and 6 days. The experiments were carried out in a randomized complete block design with six replicates. The evaluated variables were: the photosynthetic rate (A; μmol CO2 m-2), stomatal conductance (gs; μmol H2O m-2 s-1), transpiration (E; mmol H2O m-2 s-1), number of leaves per plant, and dry matter of the roots, stems, leaves, and total. The results showed that the species of B. pilosa and B. subalternans tolerate low water availability conditions. Low stomatal opening and loss of leaves are mechanisms that ensure the survival of Bidens plants to the water deficit. However, water stress close to 25% of field capacity caused the death of species. The B. subalternans had higher sensitivity to the water deficit, showing a lower dry matter of leaf, stem, and root than B. pilosa.  O estresse provocado pelo déficit de água no solo tem sido um dos principais fatores que prejudicam o crescimento das plantas. O entendimento dos fatores relacionados ao comportamento das plantas daninhas em condições de estresse hídrico pode contribuir para a elaboração de estratégias eficientes de manejo. Dois experimentos foram realizados para avaliar os efeitos e duração do estresse hídrico sobre indicadores fisiológicos e de crescimento de Bidens pilosa L. e Bidens subalternans DC. O grau de estresse foi realizado avaliando-se quatro níveis de capacidade de vaso: 100, 75, 50 e 25%. A duração do estresse hídrico incluiu cinco tratamentos: 0, 1, 2, 3, 4, 5 e 6 dias de intervalo de irrigação. Os experimentos foram realizados em blocos casualizados, com seis repetições. Foram avaliadas a taxa fotossintética (A; μmol CO2 m-2), condutância estomática (gs; μmol H2O m-2 s-1), transpiração (E; mmol H2O m-2 s-1), número de folhas por plantas e matéria seca de raízes, caules, folhas e total. Os resultados demostraram que a B. pilosa e B. subalternans podem suportar condições de baixa disponibilidade hídrica no solo. Os mecanismos envolvidos para essa habilidade podem estar relacionados com a redução da abertura estomática e a perda de folhas pela planta. Porém, esses mecanismos poderão ocorrer apenas quando a disponibilidade hídrica no solo aproxima a valores de 25% da capacidade de campo. A B. subalternans teve maior sensibilidade a redução de água disponível do solo, demostrando uma maior redução na matéria seca de folha, caule e raiz comparado a B. pilosa.  Universidade Federal Rural do Semi-Árido2021-05-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufersa.edu.br/caatinga/article/view/971510.1590/1983-21252021v34n215rcREVISTA CAATINGA; Vol. 34 No. 2 (2021); 388-397Revista Caatinga; v. 34 n. 2 (2021); 388-3971983-21250100-316Xreponame:Revista Caatingainstname:Universidade Federal Rural do Semi-Árido (UFERSA)instacron:UFERSAenghttps://periodicos.ufersa.edu.br/caatinga/article/view/9715/10620Copyright (c) 2021 Revista Caatingainfo:eu-repo/semantics/openAccessFreitas, Marcio Alexandre Moreira deLins, Hamurábi AnizioSouza, Matheus de FreitasCarneiro, Gabriella Daier Oliveira PessoaMendonça, VanderSilva, Daniel Valadão2023-07-19T12:11:58Zoai:ojs.periodicos.ufersa.edu.br:article/9715Revistahttps://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:2024-04-29T09:46:52.231598Revista Caatinga - Universidade Federal Rural do Semi-Árido (UFERSA)true
dc.title.none.fl_str_mv WATER DEFICIT ON GROWTH AND PHYSIOLOGICAL INDICATORS OF Bidens pilosa L. AND Bidens subalternans DC.
DÉFICIT HÍDRICO SOBRE INDICADORES DE CRESCIMENTO E FISIOLÓGICOS DE Bidens pilosa L. E Bidens subalternans DC.
title WATER DEFICIT ON GROWTH AND PHYSIOLOGICAL INDICATORS OF Bidens pilosa L. AND Bidens subalternans DC.
spellingShingle WATER DEFICIT ON GROWTH AND PHYSIOLOGICAL INDICATORS OF Bidens pilosa L. AND Bidens subalternans DC.
Freitas, Marcio Alexandre Moreira de
Planta daninha. Estresse abiótico. Picão preto.
Weed. Abiotic stress. Beggarticks.
title_short WATER DEFICIT ON GROWTH AND PHYSIOLOGICAL INDICATORS OF Bidens pilosa L. AND Bidens subalternans DC.
title_full WATER DEFICIT ON GROWTH AND PHYSIOLOGICAL INDICATORS OF Bidens pilosa L. AND Bidens subalternans DC.
title_fullStr WATER DEFICIT ON GROWTH AND PHYSIOLOGICAL INDICATORS OF Bidens pilosa L. AND Bidens subalternans DC.
title_full_unstemmed WATER DEFICIT ON GROWTH AND PHYSIOLOGICAL INDICATORS OF Bidens pilosa L. AND Bidens subalternans DC.
title_sort WATER DEFICIT ON GROWTH AND PHYSIOLOGICAL INDICATORS OF Bidens pilosa L. AND Bidens subalternans DC.
author Freitas, Marcio Alexandre Moreira de
author_facet Freitas, Marcio Alexandre Moreira de
Lins, Hamurábi Anizio
Souza, Matheus de Freitas
Carneiro, Gabriella Daier Oliveira Pessoa
Mendonça, Vander
Silva, Daniel Valadão
author_role author
author2 Lins, Hamurábi Anizio
Souza, Matheus de Freitas
Carneiro, Gabriella Daier Oliveira Pessoa
Mendonça, Vander
Silva, Daniel Valadão
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Freitas, Marcio Alexandre Moreira de
Lins, Hamurábi Anizio
Souza, Matheus de Freitas
Carneiro, Gabriella Daier Oliveira Pessoa
Mendonça, Vander
Silva, Daniel Valadão
dc.subject.por.fl_str_mv Planta daninha. Estresse abiótico. Picão preto.
Weed. Abiotic stress. Beggarticks.
topic Planta daninha. Estresse abiótico. Picão preto.
Weed. Abiotic stress. Beggarticks.
description Stress caused by soil water deficit has been one of the main factors that inhibit plant growth. The knowledge of the factors related to the behavior of weed species under water stress conditions can contribute to the elaboration of effective control strategies. Two experiments were carried out to evaluate the effects of the degree and duration of water deficit on physiological and growth indicators of two weed species (Bidens pilosa L. and Bidens subalternans DC.). The stress degree was simulated by four soil moisture: 100, 75, 50, 25% of total soil capacity. The water deficit duration was evaluated by five intervals of water supply: 0, 1, 2, 3, 4, 5, and 6 days. The experiments were carried out in a randomized complete block design with six replicates. The evaluated variables were: the photosynthetic rate (A; μmol CO2 m-2), stomatal conductance (gs; μmol H2O m-2 s-1), transpiration (E; mmol H2O m-2 s-1), number of leaves per plant, and dry matter of the roots, stems, leaves, and total. The results showed that the species of B. pilosa and B. subalternans tolerate low water availability conditions. Low stomatal opening and loss of leaves are mechanisms that ensure the survival of Bidens plants to the water deficit. However, water stress close to 25% of field capacity caused the death of species. The B. subalternans had higher sensitivity to the water deficit, showing a lower dry matter of leaf, stem, and root than B. pilosa.  
publishDate 2021
dc.date.none.fl_str_mv 2021-05-10
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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format article
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dc.identifier.uri.fl_str_mv https://periodicos.ufersa.edu.br/caatinga/article/view/9715
10.1590/1983-21252021v34n215rc
url https://periodicos.ufersa.edu.br/caatinga/article/view/9715
identifier_str_mv 10.1590/1983-21252021v34n215rc
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://periodicos.ufersa.edu.br/caatinga/article/view/9715/10620
dc.rights.driver.fl_str_mv Copyright (c) 2021 Revista Caatinga
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2021 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. 34 No. 2 (2021); 388-397
Revista Caatinga; v. 34 n. 2 (2021); 388-397
1983-2125
0100-316X
reponame:Revista Caatinga
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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
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