WATER DEFICIT ON GROWTH AND PHYSIOLOGICAL INDICATORS OF Bidens pilosa L. AND Bidens subalternans DC.
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , |
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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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 info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
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 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_ |
1797674028988628992 |