Photochemical efficiency in pineapple plants under saline water irrigation
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Publication Date: | 2020 |
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Format: | Article |
Language: | eng |
Source: | Revista Ambiente & Água |
Download full: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1980-993X2020000500304 |
Summary: | Abstract Studies determining physiological characteristics of field-grown pineapples irrigated with low-quality water are lacking. This work evaluated the photochemical efficiency of ‘Pérola’ pineapple irrigated with saline water in the semiarid region of Bahia, Brazil. The experiment was carried out in randomized blocks with five treatments consisting of the following irrigation depths: 100% of ETc using water with electrical conductivity (ECw) of 0.75 dS m-1; and 50, 75, 100 and 125% of ETc using water with ECw of 3.6 dS m-1. Chlorophyll a fluorescence measurements were made over the course of 13 months using a pulse-modulated fluorometer, in all treatments. Quantum efficiency (Fv/Fm) fluctuated throughout the cycle of the pineapple with values below the ideal, especially at the end of the crop cycle. Quantum yield of photosystem II (Yield), photochemical quenching (qP), non-photochemical quenching (NPQ) and chlorophyll fluorescence decrease ratio (RFd) were not influenced by irrigation depths. Therefore, energy used for photosynthetic processes in pineapple plants is not affected by irrigation using saline water with electrical conductivity of 3.6 dS m-1. |
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Photochemical efficiency in pineapple plants under saline water irrigationAnanas comosusCAM plantschlorophyll fluorescencesalinityAbstract Studies determining physiological characteristics of field-grown pineapples irrigated with low-quality water are lacking. This work evaluated the photochemical efficiency of ‘Pérola’ pineapple irrigated with saline water in the semiarid region of Bahia, Brazil. The experiment was carried out in randomized blocks with five treatments consisting of the following irrigation depths: 100% of ETc using water with electrical conductivity (ECw) of 0.75 dS m-1; and 50, 75, 100 and 125% of ETc using water with ECw of 3.6 dS m-1. Chlorophyll a fluorescence measurements were made over the course of 13 months using a pulse-modulated fluorometer, in all treatments. Quantum efficiency (Fv/Fm) fluctuated throughout the cycle of the pineapple with values below the ideal, especially at the end of the crop cycle. Quantum yield of photosystem II (Yield), photochemical quenching (qP), non-photochemical quenching (NPQ) and chlorophyll fluorescence decrease ratio (RFd) were not influenced by irrigation depths. Therefore, energy used for photosynthetic processes in pineapple plants is not affected by irrigation using saline water with electrical conductivity of 3.6 dS m-1.Instituto de Pesquisas Ambientais em Bacias Hidrográficas2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1980-993X2020000500304Revista Ambiente & Água v.15 n.5 2020reponame:Revista Ambiente & Águainstname:Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHI)instacron:IPABHI10.4136/ambi-agua.2564info:eu-repo/semantics/openAccessBrito,Cleiton Fernando BarbosaFonseca,Varley AndradeSantos,Marcelo Rocha dosDonato,Sérgio Luiz RodriguesArantes,Alessandro de MagalhãesSantos,Aloísio José doseng2020-09-11T00:00:00Zoai:scielo:S1980-993X2020000500304Revistahttp://www.ambi-agua.net/PUBhttps://old.scielo.br/oai/scielo-oai.php||ambi.agua@gmail.com1980-993X1980-993Xopendoar:2020-09-11T00:00Revista Ambiente & Água - Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHI)false |
dc.title.none.fl_str_mv |
Photochemical efficiency in pineapple plants under saline water irrigation |
title |
Photochemical efficiency in pineapple plants under saline water irrigation |
spellingShingle |
Photochemical efficiency in pineapple plants under saline water irrigation Brito,Cleiton Fernando Barbosa Ananas comosus CAM plants chlorophyll fluorescence salinity |
title_short |
Photochemical efficiency in pineapple plants under saline water irrigation |
title_full |
Photochemical efficiency in pineapple plants under saline water irrigation |
title_fullStr |
Photochemical efficiency in pineapple plants under saline water irrigation |
title_full_unstemmed |
Photochemical efficiency in pineapple plants under saline water irrigation |
title_sort |
Photochemical efficiency in pineapple plants under saline water irrigation |
author |
Brito,Cleiton Fernando Barbosa |
author_facet |
Brito,Cleiton Fernando Barbosa Fonseca,Varley Andrade Santos,Marcelo Rocha dos Donato,Sérgio Luiz Rodrigues Arantes,Alessandro de Magalhães Santos,Aloísio José dos |
author_role |
author |
author2 |
Fonseca,Varley Andrade Santos,Marcelo Rocha dos Donato,Sérgio Luiz Rodrigues Arantes,Alessandro de Magalhães Santos,Aloísio José dos |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Brito,Cleiton Fernando Barbosa Fonseca,Varley Andrade Santos,Marcelo Rocha dos Donato,Sérgio Luiz Rodrigues Arantes,Alessandro de Magalhães Santos,Aloísio José dos |
dc.subject.por.fl_str_mv |
Ananas comosus CAM plants chlorophyll fluorescence salinity |
topic |
Ananas comosus CAM plants chlorophyll fluorescence salinity |
description |
Abstract Studies determining physiological characteristics of field-grown pineapples irrigated with low-quality water are lacking. This work evaluated the photochemical efficiency of ‘Pérola’ pineapple irrigated with saline water in the semiarid region of Bahia, Brazil. The experiment was carried out in randomized blocks with five treatments consisting of the following irrigation depths: 100% of ETc using water with electrical conductivity (ECw) of 0.75 dS m-1; and 50, 75, 100 and 125% of ETc using water with ECw of 3.6 dS m-1. Chlorophyll a fluorescence measurements were made over the course of 13 months using a pulse-modulated fluorometer, in all treatments. Quantum efficiency (Fv/Fm) fluctuated throughout the cycle of the pineapple with values below the ideal, especially at the end of the crop cycle. Quantum yield of photosystem II (Yield), photochemical quenching (qP), non-photochemical quenching (NPQ) and chlorophyll fluorescence decrease ratio (RFd) were not influenced by irrigation depths. Therefore, energy used for photosynthetic processes in pineapple plants is not affected by irrigation using saline water with electrical conductivity of 3.6 dS m-1. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1980-993X2020000500304 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1980-993X2020000500304 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.4136/ambi-agua.2564 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Instituto de Pesquisas Ambientais em Bacias Hidrográficas |
publisher.none.fl_str_mv |
Instituto de Pesquisas Ambientais em Bacias Hidrográficas |
dc.source.none.fl_str_mv |
Revista Ambiente & Água v.15 n.5 2020 reponame:Revista Ambiente & Água instname:Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHI) instacron:IPABHI |
instname_str |
Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHI) |
instacron_str |
IPABHI |
institution |
IPABHI |
reponame_str |
Revista Ambiente & Água |
collection |
Revista Ambiente & Água |
repository.name.fl_str_mv |
Revista Ambiente & Água - Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHI) |
repository.mail.fl_str_mv |
||ambi.agua@gmail.com |
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1752129751289430016 |