Photosynthetic capacity and water use efficiency in sugarcane genotypes subject to water deficit during early growth phase
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , |
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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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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1808129008999596032 |