Photosynthetic capacity and water use efficiency in sugarcane genotypes subject to water deficit during early growth phase

Detalhes bibliográficos
Autor(a) principal: Silva, Marcelo de Almeida [UNESP]
Data de Publicação: 2013
Outros Autores: Jifon, John Lonfover, Santos, Claudiana Moura Dos [UNESP], Jadoski, Cleber Junior [UNESP], Silva, Jorge Alberto Gonçalves Da
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1590/S1516-89132013000500004
http://hdl.handle.net/11449/110148
Resumo: The objective of this study was to compare the gas exchange, photosynthetic capacity and water potential of sugarcane genotypes cultivated under water deficit conditions imposed during the initial growth phase. Experiments were performed in a greenhouse using two sugarcane genotypes namely: HoCP93-776 (drought susceptible) and TCP02-4587 (drought tolerant). Sixty days after planting, two different water treatments were applied (i.e., with or without water deficit). At 0,30 and 60 days after the treatment, gas exchange variables were evaluated for their relationship with water use, intrinsic instantaneous water use efficiency and instantaneous carboxylation efficiency. The SPAD index, photosynthetic pigments, water potential and relative water content in the leaves were also analyzed. The genotype HoCP93-776 was more sensitive to drought treatment as indicated by the significantly lower values of SPAD index, photosynthetic pigments, water potential (Ψw) and relative water content (RWC) variables. The genotype TCP02-4587 had higher water potential, stomatal control efficiency, water use efficiency (WUE), intrinsic instantaneous water use efficiency (WUEintr), instantaneous carboxylation efficiency and photosynthetic capacity. The highest air vapor pressure deficit during the drought conditions could be due to the stomatal closing in the HoCP93-776, which contributed to its lower photosynthetic capacity.
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spelling Photosynthetic capacity and water use efficiency in sugarcane genotypes subject to water deficit during early growth phaseSaccharum spp.photosynthesisstomatal conductancechlorophylldrought tolerancewater potentialThe objective of this study was to compare the gas exchange, photosynthetic capacity and water potential of sugarcane genotypes cultivated under water deficit conditions imposed during the initial growth phase. Experiments were performed in a greenhouse using two sugarcane genotypes namely: HoCP93-776 (drought susceptible) and TCP02-4587 (drought tolerant). Sixty days after planting, two different water treatments were applied (i.e., with or without water deficit). At 0,30 and 60 days after the treatment, gas exchange variables were evaluated for their relationship with water use, intrinsic instantaneous water use efficiency and instantaneous carboxylation efficiency. The SPAD index, photosynthetic pigments, water potential and relative water content in the leaves were also analyzed. The genotype HoCP93-776 was more sensitive to drought treatment as indicated by the significantly lower values of SPAD index, photosynthetic pigments, water potential (Ψw) and relative water content (RWC) variables. The genotype TCP02-4587 had higher water potential, stomatal control efficiency, water use efficiency (WUE), intrinsic instantaneous water use efficiency (WUEintr), instantaneous carboxylation efficiency and photosynthetic capacity. The highest air vapor pressure deficit during the drought conditions could be due to the stomatal closing in the HoCP93-776, which contributed to its lower photosynthetic capacity.Universidade Estadual Paulista Faculdade de Ciências Agronômicas Departamento de Produção e Melhoramento VegetalTexas A & M University System Texas A & M AgriLife Research CenterUniversidade Estadual Paulista Faculdade de Ciências Agronômicas Departamento de Produção e Melhoramento VegetalInstituto de Tecnologia do Paraná - TecparUniversidade Estadual Paulista (Unesp)Texas A & M University System Texas A & M AgriLife Research CenterSilva, Marcelo de Almeida [UNESP]Jifon, John LonfoverSantos, Claudiana Moura Dos [UNESP]Jadoski, Cleber Junior [UNESP]Silva, Jorge Alberto Gonçalves Da2014-10-01T13:08:52Z2014-10-01T13:08:52Z2013-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article735-748application/pdfhttp://dx.doi.org/10.1590/S1516-89132013000500004Brazilian Archives of Biology and Technology. Instituto de Tecnologia do Paraná - Tecpar, v. 56, n. 5, p. 735-748, 2013.1516-8913http://hdl.handle.net/11449/11014810.1590/S1516-89132013000500004S1516-89132013000500004WOS:000327507700004S1516-89132013000500004.pdf4203867944943427SciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBrazilian Archives of Biology and Technology0.6760,281info:eu-repo/semantics/openAccess2024-04-30T15:56:56Zoai:repositorio.unesp.br:11449/110148Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:59:34.256181Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Photosynthetic capacity and water use efficiency in sugarcane genotypes subject to water deficit during early growth phase
title Photosynthetic capacity and water use efficiency in sugarcane genotypes subject to water deficit during early growth phase
spellingShingle Photosynthetic capacity and water use efficiency in sugarcane genotypes subject to water deficit during early growth phase
Silva, Marcelo de Almeida [UNESP]
Saccharum spp.
photosynthesis
stomatal conductance
chlorophyll
drought tolerance
water potential
title_short Photosynthetic capacity and water use efficiency in sugarcane genotypes subject to water deficit during early growth phase
title_full Photosynthetic capacity and water use efficiency in sugarcane genotypes subject to water deficit during early growth phase
title_fullStr Photosynthetic capacity and water use efficiency in sugarcane genotypes subject to water deficit during early growth phase
title_full_unstemmed Photosynthetic capacity and water use efficiency in sugarcane genotypes subject to water deficit during early growth phase
title_sort Photosynthetic capacity and water use efficiency in sugarcane genotypes subject to water deficit during early growth phase
author Silva, Marcelo de Almeida [UNESP]
author_facet Silva, Marcelo de Almeida [UNESP]
Jifon, John Lonfover
Santos, Claudiana Moura Dos [UNESP]
Jadoski, Cleber Junior [UNESP]
Silva, Jorge Alberto Gonçalves Da
author_role author
author2 Jifon, John Lonfover
Santos, Claudiana Moura Dos [UNESP]
Jadoski, Cleber Junior [UNESP]
Silva, Jorge Alberto Gonçalves Da
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Texas A & M University System Texas A & M AgriLife Research Center
dc.contributor.author.fl_str_mv Silva, Marcelo de Almeida [UNESP]
Jifon, John Lonfover
Santos, Claudiana Moura Dos [UNESP]
Jadoski, Cleber Junior [UNESP]
Silva, Jorge Alberto Gonçalves Da
dc.subject.por.fl_str_mv Saccharum spp.
photosynthesis
stomatal conductance
chlorophyll
drought tolerance
water potential
topic Saccharum spp.
photosynthesis
stomatal conductance
chlorophyll
drought tolerance
water potential
description The objective of this study was to compare the gas exchange, photosynthetic capacity and water potential of sugarcane genotypes cultivated under water deficit conditions imposed during the initial growth phase. Experiments were performed in a greenhouse using two sugarcane genotypes namely: HoCP93-776 (drought susceptible) and TCP02-4587 (drought tolerant). Sixty days after planting, two different water treatments were applied (i.e., with or without water deficit). At 0,30 and 60 days after the treatment, gas exchange variables were evaluated for their relationship with water use, intrinsic instantaneous water use efficiency and instantaneous carboxylation efficiency. The SPAD index, photosynthetic pigments, water potential and relative water content in the leaves were also analyzed. The genotype HoCP93-776 was more sensitive to drought treatment as indicated by the significantly lower values of SPAD index, photosynthetic pigments, water potential (Ψw) and relative water content (RWC) variables. The genotype TCP02-4587 had higher water potential, stomatal control efficiency, water use efficiency (WUE), intrinsic instantaneous water use efficiency (WUEintr), instantaneous carboxylation efficiency and photosynthetic capacity. The highest air vapor pressure deficit during the drought conditions could be due to the stomatal closing in the HoCP93-776, which contributed to its lower photosynthetic capacity.
publishDate 2013
dc.date.none.fl_str_mv 2013-10-01
2014-10-01T13:08:52Z
2014-10-01T13:08:52Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1590/S1516-89132013000500004
Brazilian Archives of Biology and Technology. Instituto de Tecnologia do Paraná - Tecpar, v. 56, n. 5, p. 735-748, 2013.
1516-8913
http://hdl.handle.net/11449/110148
10.1590/S1516-89132013000500004
S1516-89132013000500004
WOS:000327507700004
S1516-89132013000500004.pdf
4203867944943427
url http://dx.doi.org/10.1590/S1516-89132013000500004
http://hdl.handle.net/11449/110148
identifier_str_mv Brazilian Archives of Biology and Technology. Instituto de Tecnologia do Paraná - Tecpar, v. 56, n. 5, p. 735-748, 2013.
1516-8913
10.1590/S1516-89132013000500004
S1516-89132013000500004
WOS:000327507700004
S1516-89132013000500004.pdf
4203867944943427
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Brazilian Archives of Biology and Technology
0.676
0,281
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 735-748
application/pdf
dc.publisher.none.fl_str_mv Instituto de Tecnologia do Paraná - Tecpar
publisher.none.fl_str_mv Instituto de Tecnologia do Paraná - Tecpar
dc.source.none.fl_str_mv SciELO
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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