Gas exchange and chlorophyll a fluorescence parameters of ornamental bromeliads

Bibliographic Details
Main Author: Silva,Karina Gonçalves da
Publication Date: 2017
Other Authors: Silva,Emerson Alves da, Ferreira,Mauricio Lamano, Kanashiro,Shoey, Camargo,Plínio Barbosa de, Tavares,Armando Reis
Format: Article
Language: eng
Source: Ornamental Horticulture
Download full: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2447-536X2017000400400
Summary: ABSTRACT Gas exchange and chlorophyll a fluorescence are widely used in physiological and ecological studies; however, few studies have used these techniques with ornamental plants. This study tested the potential contribution of gas exchange and chlorophyll a fluorescence to evaluate the water and nutrients uptake by the tank and root system of epiphyte bromeliad Guzmania lingulata. For this purpose, we conducted an experiment with different water regime and another with different concentrations of nitrogen. The experiments were: 1 - Watering: Control (application of water into Tank and Root), Tank (watering into Tank), Root (watering Root) and Drought (water suspension during the 90 days of experimentation) and 2 - Nitrogen: Plants fertilized with Hoagland and Arnon nutrient solution exclusively into Tank or Root with nitrogen concentrations of control and 2.62 or 5.34 mM N applied as urea. The Fv/Fm ratio allowed comparing the treatments between experiments, demonstrating that Root and Tank both have the capacity to maintain G. lingulata photosynthetic activity and growth, while Drought treatment (water suspension) was the limiting factor for energy conversion efficiency of PSII. However, gas exchange was more permissive as a parameter for comparing treatments in the nitrogen experiment, providing important information about the general aspects of the photosynthetic process in the watering experiment. Both gas exchange and chlorophyll a fluorescence can support the evaluation of G. lingulata physiological status and can be useful tools in ornamental horticultural studies.
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spelling Gas exchange and chlorophyll a fluorescence parameters of ornamental bromeliadsBromeliaceaenutritiondrought stressIRGAfluorometerABSTRACT Gas exchange and chlorophyll a fluorescence are widely used in physiological and ecological studies; however, few studies have used these techniques with ornamental plants. This study tested the potential contribution of gas exchange and chlorophyll a fluorescence to evaluate the water and nutrients uptake by the tank and root system of epiphyte bromeliad Guzmania lingulata. For this purpose, we conducted an experiment with different water regime and another with different concentrations of nitrogen. The experiments were: 1 - Watering: Control (application of water into Tank and Root), Tank (watering into Tank), Root (watering Root) and Drought (water suspension during the 90 days of experimentation) and 2 - Nitrogen: Plants fertilized with Hoagland and Arnon nutrient solution exclusively into Tank or Root with nitrogen concentrations of control and 2.62 or 5.34 mM N applied as urea. The Fv/Fm ratio allowed comparing the treatments between experiments, demonstrating that Root and Tank both have the capacity to maintain G. lingulata photosynthetic activity and growth, while Drought treatment (water suspension) was the limiting factor for energy conversion efficiency of PSII. However, gas exchange was more permissive as a parameter for comparing treatments in the nitrogen experiment, providing important information about the general aspects of the photosynthetic process in the watering experiment. Both gas exchange and chlorophyll a fluorescence can support the evaluation of G. lingulata physiological status and can be useful tools in ornamental horticultural studies.Sociedade Brasileira de Floricultura e Plantas Ornamentais2017-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S2447-536X2017000400400Ornamental Horticulture v.23 n.4 2017reponame:Ornamental Horticultureinstname:Sociedade Brasileira de Floricultura e Plantas Ornamentaisinstacron:SBFPO10.14295/oh.v23i4.1064info:eu-repo/semantics/openAccessSilva,Karina Gonçalves daSilva,Emerson Alves daFerreira,Mauricio LamanoKanashiro,ShoeyCamargo,Plínio Barbosa deTavares,Armando Reiseng2020-04-25T22:05:12Zhttp://www.scielo.br/oai/scielo-oai.php2447-536X2447-536Xopendoar:null2020-04-26 03:22:30.473Ornamental Horticulture - Sociedade Brasileira de Floricultura e Plantas Ornamentaistrue
dc.title.none.fl_str_mv Gas exchange and chlorophyll a fluorescence parameters of ornamental bromeliads
title Gas exchange and chlorophyll a fluorescence parameters of ornamental bromeliads
spellingShingle Gas exchange and chlorophyll a fluorescence parameters of ornamental bromeliads
Silva,Karina Gonçalves da
Bromeliaceae
nutrition
drought stress
IRGA
fluorometer
title_short Gas exchange and chlorophyll a fluorescence parameters of ornamental bromeliads
title_full Gas exchange and chlorophyll a fluorescence parameters of ornamental bromeliads
title_fullStr Gas exchange and chlorophyll a fluorescence parameters of ornamental bromeliads
title_full_unstemmed Gas exchange and chlorophyll a fluorescence parameters of ornamental bromeliads
title_sort Gas exchange and chlorophyll a fluorescence parameters of ornamental bromeliads
author Silva,Karina Gonçalves da
author_facet Silva,Karina Gonçalves da
Silva,Emerson Alves da
Ferreira,Mauricio Lamano
Kanashiro,Shoey
Camargo,Plínio Barbosa de
Tavares,Armando Reis
author_role author
author2 Silva,Emerson Alves da
Ferreira,Mauricio Lamano
Kanashiro,Shoey
Camargo,Plínio Barbosa de
Tavares,Armando Reis
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Silva,Karina Gonçalves da
Silva,Emerson Alves da
Ferreira,Mauricio Lamano
Kanashiro,Shoey
Camargo,Plínio Barbosa de
Tavares,Armando Reis
dc.subject.por.fl_str_mv Bromeliaceae
nutrition
drought stress
IRGA
fluorometer
topic Bromeliaceae
nutrition
drought stress
IRGA
fluorometer
dc.description.none.fl_txt_mv ABSTRACT Gas exchange and chlorophyll a fluorescence are widely used in physiological and ecological studies; however, few studies have used these techniques with ornamental plants. This study tested the potential contribution of gas exchange and chlorophyll a fluorescence to evaluate the water and nutrients uptake by the tank and root system of epiphyte bromeliad Guzmania lingulata. For this purpose, we conducted an experiment with different water regime and another with different concentrations of nitrogen. The experiments were: 1 - Watering: Control (application of water into Tank and Root), Tank (watering into Tank), Root (watering Root) and Drought (water suspension during the 90 days of experimentation) and 2 - Nitrogen: Plants fertilized with Hoagland and Arnon nutrient solution exclusively into Tank or Root with nitrogen concentrations of control and 2.62 or 5.34 mM N applied as urea. The Fv/Fm ratio allowed comparing the treatments between experiments, demonstrating that Root and Tank both have the capacity to maintain G. lingulata photosynthetic activity and growth, while Drought treatment (water suspension) was the limiting factor for energy conversion efficiency of PSII. However, gas exchange was more permissive as a parameter for comparing treatments in the nitrogen experiment, providing important information about the general aspects of the photosynthetic process in the watering experiment. Both gas exchange and chlorophyll a fluorescence can support the evaluation of G. lingulata physiological status and can be useful tools in ornamental horticultural studies.
description ABSTRACT Gas exchange and chlorophyll a fluorescence are widely used in physiological and ecological studies; however, few studies have used these techniques with ornamental plants. This study tested the potential contribution of gas exchange and chlorophyll a fluorescence to evaluate the water and nutrients uptake by the tank and root system of epiphyte bromeliad Guzmania lingulata. For this purpose, we conducted an experiment with different water regime and another with different concentrations of nitrogen. The experiments were: 1 - Watering: Control (application of water into Tank and Root), Tank (watering into Tank), Root (watering Root) and Drought (water suspension during the 90 days of experimentation) and 2 - Nitrogen: Plants fertilized with Hoagland and Arnon nutrient solution exclusively into Tank or Root with nitrogen concentrations of control and 2.62 or 5.34 mM N applied as urea. The Fv/Fm ratio allowed comparing the treatments between experiments, demonstrating that Root and Tank both have the capacity to maintain G. lingulata photosynthetic activity and growth, while Drought treatment (water suspension) was the limiting factor for energy conversion efficiency of PSII. However, gas exchange was more permissive as a parameter for comparing treatments in the nitrogen experiment, providing important information about the general aspects of the photosynthetic process in the watering experiment. Both gas exchange and chlorophyll a fluorescence can support the evaluation of G. lingulata physiological status and can be useful tools in ornamental horticultural studies.
publishDate 2017
dc.date.none.fl_str_mv 2017-12-01
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://www.scielo.br/scielo.php?script=sci_arttext&pid=S2447-536X2017000400400
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2447-536X2017000400400
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.14295/oh.v23i4.1064
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 Sociedade Brasileira de Floricultura e Plantas Ornamentais
publisher.none.fl_str_mv Sociedade Brasileira de Floricultura e Plantas Ornamentais
dc.source.none.fl_str_mv Ornamental Horticulture v.23 n.4 2017
reponame:Ornamental Horticulture
instname:Sociedade Brasileira de Floricultura e Plantas Ornamentais
instacron:SBFPO
reponame_str Ornamental Horticulture
collection Ornamental Horticulture
instname_str Sociedade Brasileira de Floricultura e Plantas Ornamentais
instacron_str SBFPO
institution SBFPO
repository.name.fl_str_mv Ornamental Horticulture - Sociedade Brasileira de Floricultura e Plantas Ornamentais
repository.mail.fl_str_mv
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