GAS EXCHANGES, QUANTUM YIELD AND PHOTOSYNTHETIC PIGMENTS OF WEST INDIAN CHERRY UNDER SALT STRESS AND POTASSIUM FERTILIZATION

Detalhes bibliográficos
Autor(a) principal: Dias, Adaan Sudario
Data de Publicação: 2019
Outros Autores: Lima, Geovani Soares de, Pinheiro, Francisco Wesley Alves, Gheyi, Hans Raj, Soares, Lauriane Almeida dos Anjos
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista Caatinga
Texto Completo: https://periodicos.ufersa.edu.br/caatinga/article/view/7671
Resumo: Water resources in the semi-arid region of Northeast Brazil commonly contain high salt concentrations, compromising the quality of water for agriculture. Thus, adopting techniques that make the use of these resources feasible in agriculture is fundamental. The present study aimed to evaluate the gas exchanges, quantum yield and photosynthetic pigments of grafted West Indian cherry subjected to salt stress and potassium fertilization under greenhouse conditions in the municipality of Campina Grande, PB, Brazil. Treatments were distributed in randomized blocks, composed of two levels of electrical conductivity – ECw (0.8 and 3.8 dS m-1) of water and four doses of potassium (50, 75, 100 and 125% of the dose recommended for the crop), with three replicates. The dose relative to 100% corresponded to 19.8 g of K2O per plant. Gas exchanges, chlorophyll a fluorescence and photosynthetic pigments of West Indian cherry are negatively affected by irrigation using water with electrical conductivity of 3.8 dS m-1, which compromises the photosynthetic apparatus of the plant, a situation evidenced by the reduction in photosystem II quantum efficiency. Increasing potassium doses led to increments in transpiration, chlorophyll a maximum fluorescence and chlorophyll b content in West Indian cherry grown under salt stress, but do not attenuate the negative effects of irrigation with 3.8 dS m-1 water on its potential photochemical efficiency.
id UFERSA-1_3d62d71c2bd52fcdcd423ba46707bdf7
oai_identifier_str oai:ojs.periodicos.ufersa.edu.br:article/7671
network_acronym_str UFERSA-1
network_name_str Revista Caatinga
repository_id_str
spelling GAS EXCHANGES, QUANTUM YIELD AND PHOTOSYNTHETIC PIGMENTS OF WEST INDIAN CHERRY UNDER SALT STRESS AND POTASSIUM FERTILIZATIONTROCAS GASOSAS, RENDIMENTO QUÂNTICO E PIGMENTOS FOTOSSINTÉTICOS DA ACEROLEIRA SOB ESTRESSE SALINO E ADUBAÇÃO POTÁSSICAMalpighia emarginata. Physiology. Potassium. Salinity.Malphigia emarginata. Fisiologia. Potássio. Salinidade.Water resources in the semi-arid region of Northeast Brazil commonly contain high salt concentrations, compromising the quality of water for agriculture. Thus, adopting techniques that make the use of these resources feasible in agriculture is fundamental. The present study aimed to evaluate the gas exchanges, quantum yield and photosynthetic pigments of grafted West Indian cherry subjected to salt stress and potassium fertilization under greenhouse conditions in the municipality of Campina Grande, PB, Brazil. Treatments were distributed in randomized blocks, composed of two levels of electrical conductivity – ECw (0.8 and 3.8 dS m-1) of water and four doses of potassium (50, 75, 100 and 125% of the dose recommended for the crop), with three replicates. The dose relative to 100% corresponded to 19.8 g of K2O per plant. Gas exchanges, chlorophyll a fluorescence and photosynthetic pigments of West Indian cherry are negatively affected by irrigation using water with electrical conductivity of 3.8 dS m-1, which compromises the photosynthetic apparatus of the plant, a situation evidenced by the reduction in photosystem II quantum efficiency. Increasing potassium doses led to increments in transpiration, chlorophyll a maximum fluorescence and chlorophyll b content in West Indian cherry grown under salt stress, but do not attenuate the negative effects of irrigation with 3.8 dS m-1 water on its potential photochemical efficiency.Os recursos hídricos da região semiárida do Nordeste Brasileiro comumente possuem elevadas concentrações de sais, comprometendo a qualidade da água para agricultura. Desta forma, a adoção de práticas de manejo que viabilizem o uso de tais recursos na agricultura é fundamental. Neste trabalho, objetivou-se avaliar as trocas gasosas, o rendimento quântico e os pigmentos fotossintéticos da acerola enxertada submetida ao estresse salino e adubação potássica em condição de casa de vegetação no município de Campina Grande-PB. Os tratamentos foram distribuídos em blocos casualizados, sendo constituídos de dois níveis de condutividade elétrica da água - CEa (0,8 e 3,8 dS m-1) e quatro doses de potássio (50, 75; 100 e 125% da dose recomendada para a cultura), com três repetições. A dose de 100% correspondeu a 19,8 g de K2O por planta. As trocas gasosas a fluorescência da clorofila a e os pigmentos fotossintéticos da aceroleira são afetados negativamente pela irrigação com água de condutividade elétrica de 3,8 dS m-1 que compromete o aparato fotossintético da planta, situação observada através da redução da eficiência quântica do fotossistema II. As doses de potássio crescentes promovem incremento na taxa de transpiração, fluorescência máxima da clorofila a e no teor de clorofila b da aceroleira cultivada sob estresse salino, porém não atenuam os efeitos negativos da irrigação com água de 3,8 dS m-1 sobre a eficiência quântica potencial da acerola.Universidade Federal Rural do Semi-Árido2019-05-21info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufersa.edu.br/caatinga/article/view/767110.1590/1983-21252019v32n216rcREVISTA CAATINGA; Vol. 32 No. 2 (2019); 429-439Revista Caatinga; v. 32 n. 2 (2019); 429-4391983-21250100-316Xreponame:Revista Caatingainstname:Universidade Federal Rural do Semi-Árido (UFERSA)instacron:UFERSAenghttps://periodicos.ufersa.edu.br/caatinga/article/view/7671/9959Copyright (c) 2019 Revista Caatingainfo:eu-repo/semantics/openAccessDias, Adaan SudarioLima, Geovani Soares dePinheiro, Francisco Wesley AlvesGheyi, Hans RajSoares, Lauriane Almeida dos Anjos2023-07-20T17:16:06Zoai:ojs.periodicos.ufersa.edu.br:article/7671Revistahttps://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:2024-04-29T09:46:36.308589Revista Caatinga - Universidade Federal Rural do Semi-Árido (UFERSA)true
dc.title.none.fl_str_mv GAS EXCHANGES, QUANTUM YIELD AND PHOTOSYNTHETIC PIGMENTS OF WEST INDIAN CHERRY UNDER SALT STRESS AND POTASSIUM FERTILIZATION
TROCAS GASOSAS, RENDIMENTO QUÂNTICO E PIGMENTOS FOTOSSINTÉTICOS DA ACEROLEIRA SOB ESTRESSE SALINO E ADUBAÇÃO POTÁSSICA
title GAS EXCHANGES, QUANTUM YIELD AND PHOTOSYNTHETIC PIGMENTS OF WEST INDIAN CHERRY UNDER SALT STRESS AND POTASSIUM FERTILIZATION
spellingShingle GAS EXCHANGES, QUANTUM YIELD AND PHOTOSYNTHETIC PIGMENTS OF WEST INDIAN CHERRY UNDER SALT STRESS AND POTASSIUM FERTILIZATION
Dias, Adaan Sudario
Malpighia emarginata. Physiology. Potassium. Salinity.
Malphigia emarginata. Fisiologia. Potássio. Salinidade.
title_short GAS EXCHANGES, QUANTUM YIELD AND PHOTOSYNTHETIC PIGMENTS OF WEST INDIAN CHERRY UNDER SALT STRESS AND POTASSIUM FERTILIZATION
title_full GAS EXCHANGES, QUANTUM YIELD AND PHOTOSYNTHETIC PIGMENTS OF WEST INDIAN CHERRY UNDER SALT STRESS AND POTASSIUM FERTILIZATION
title_fullStr GAS EXCHANGES, QUANTUM YIELD AND PHOTOSYNTHETIC PIGMENTS OF WEST INDIAN CHERRY UNDER SALT STRESS AND POTASSIUM FERTILIZATION
title_full_unstemmed GAS EXCHANGES, QUANTUM YIELD AND PHOTOSYNTHETIC PIGMENTS OF WEST INDIAN CHERRY UNDER SALT STRESS AND POTASSIUM FERTILIZATION
title_sort GAS EXCHANGES, QUANTUM YIELD AND PHOTOSYNTHETIC PIGMENTS OF WEST INDIAN CHERRY UNDER SALT STRESS AND POTASSIUM FERTILIZATION
author Dias, Adaan Sudario
author_facet Dias, Adaan Sudario
Lima, Geovani Soares de
Pinheiro, Francisco Wesley Alves
Gheyi, Hans Raj
Soares, Lauriane Almeida dos Anjos
author_role author
author2 Lima, Geovani Soares de
Pinheiro, Francisco Wesley Alves
Gheyi, Hans Raj
Soares, Lauriane Almeida dos Anjos
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Dias, Adaan Sudario
Lima, Geovani Soares de
Pinheiro, Francisco Wesley Alves
Gheyi, Hans Raj
Soares, Lauriane Almeida dos Anjos
dc.subject.por.fl_str_mv Malpighia emarginata. Physiology. Potassium. Salinity.
Malphigia emarginata. Fisiologia. Potássio. Salinidade.
topic Malpighia emarginata. Physiology. Potassium. Salinity.
Malphigia emarginata. Fisiologia. Potássio. Salinidade.
description Water resources in the semi-arid region of Northeast Brazil commonly contain high salt concentrations, compromising the quality of water for agriculture. Thus, adopting techniques that make the use of these resources feasible in agriculture is fundamental. The present study aimed to evaluate the gas exchanges, quantum yield and photosynthetic pigments of grafted West Indian cherry subjected to salt stress and potassium fertilization under greenhouse conditions in the municipality of Campina Grande, PB, Brazil. Treatments were distributed in randomized blocks, composed of two levels of electrical conductivity – ECw (0.8 and 3.8 dS m-1) of water and four doses of potassium (50, 75, 100 and 125% of the dose recommended for the crop), with three replicates. The dose relative to 100% corresponded to 19.8 g of K2O per plant. Gas exchanges, chlorophyll a fluorescence and photosynthetic pigments of West Indian cherry are negatively affected by irrigation using water with electrical conductivity of 3.8 dS m-1, which compromises the photosynthetic apparatus of the plant, a situation evidenced by the reduction in photosystem II quantum efficiency. Increasing potassium doses led to increments in transpiration, chlorophyll a maximum fluorescence and chlorophyll b content in West Indian cherry grown under salt stress, but do not attenuate the negative effects of irrigation with 3.8 dS m-1 water on its potential photochemical efficiency.
publishDate 2019
dc.date.none.fl_str_mv 2019-05-21
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/7671
10.1590/1983-21252019v32n216rc
url https://periodicos.ufersa.edu.br/caatinga/article/view/7671
identifier_str_mv 10.1590/1983-21252019v32n216rc
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://periodicos.ufersa.edu.br/caatinga/article/view/7671/9959
dc.rights.driver.fl_str_mv Copyright (c) 2019 Revista Caatinga
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2019 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. 32 No. 2 (2019); 429-439
Revista Caatinga; v. 32 n. 2 (2019); 429-439
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_ 1797674027259527168

Registros relacionados