Leaf application of chitosan and physiological evaluation of maize hybrids contrasting for drought tolerance under water restriction.
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1113902 |
Resumo: | It is a fact that the regions that cultivate the most maize crop do not have fully adequate technologies to measure productivity losses caused by irregularities in water availability. The objective of this study was to evaluate the physiological characteristics of maize hybrids tolerant (DKB 390) and sensitive (BRS 1030) to drought, at V5 growth stage and under water restriction, in order to understand the mechanisms involved in the induction of tolerance to drought by chitosan in contrasting maize genotypes. Plants were cultivated in pots at a greenhouse, and chitosan 100 ppm was applied by leaf spraying. The water restriction was imposed for 10 days and then leaf gaseous exchange and chlorophyll fluorescence were evaluated. The tolerant hybrid (DKB 390) showed higher photosynthesis, stomatal conductance, carboxylation efficiency, electron transport rate, and non-photochemical quenching when chitosan was used. Plants from tolerant genotype treated with chitosan were more tolerant to water stress because there were more responsive to the biopolymer. |
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Leaf application of chitosan and physiological evaluation of maize hybrids contrasting for drought tolerance under water restriction.Estresse hídricoTroca gasosaTêmperaFluorescência da clorofilaZea MaysIt is a fact that the regions that cultivate the most maize crop do not have fully adequate technologies to measure productivity losses caused by irregularities in water availability. The objective of this study was to evaluate the physiological characteristics of maize hybrids tolerant (DKB 390) and sensitive (BRS 1030) to drought, at V5 growth stage and under water restriction, in order to understand the mechanisms involved in the induction of tolerance to drought by chitosan in contrasting maize genotypes. Plants were cultivated in pots at a greenhouse, and chitosan 100 ppm was applied by leaf spraying. The water restriction was imposed for 10 days and then leaf gaseous exchange and chlorophyll fluorescence were evaluated. The tolerant hybrid (DKB 390) showed higher photosynthesis, stomatal conductance, carboxylation efficiency, electron transport rate, and non-photochemical quenching when chitosan was used. Plants from tolerant genotype treated with chitosan were more tolerant to water stress because there were more responsive to the biopolymer.Publicado online em 2019.Universidade Federal de Alfenas; Universidade Federal de Alfenas; Universidade Federal de Alfenas; Universidade Federal de Alfenas; Universidade Federal de Alfenas; PAULO CESAR MAGALHAES, CNPMS; Universidade Federal de Alfenas; Universidade Federal de Viçosa; Universidade Federal de Alfenas.VERONEZE JÚNIOR, V.MARTINS, M.MC LEOD, L.SOUZA, K. R. D.SANTOS FILHO, P. R.MAGALHAES, P. C.CARVALHO, D. T.SANTOS, M. H.SOUZA, T. C.2020-08-14T11:10:11Z2020-08-14T11:10:11Z2019-11-052020info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleBrazilian Journal of Biology, v. 80, n. 3 p. 631-640, 2020.http://www.alice.cnptia.embrapa.br/alice/handle/doc/111390210.1590/1519-6984.218391enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2020-08-14T11:10:24Zoai:www.alice.cnptia.embrapa.br:doc/1113902Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542020-08-14T11:10:24falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542020-08-14T11:10:24Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Leaf application of chitosan and physiological evaluation of maize hybrids contrasting for drought tolerance under water restriction. |
title |
Leaf application of chitosan and physiological evaluation of maize hybrids contrasting for drought tolerance under water restriction. |
spellingShingle |
Leaf application of chitosan and physiological evaluation of maize hybrids contrasting for drought tolerance under water restriction. VERONEZE JÚNIOR, V. Estresse hídrico Troca gasosa Têmpera Fluorescência da clorofila Zea Mays |
title_short |
Leaf application of chitosan and physiological evaluation of maize hybrids contrasting for drought tolerance under water restriction. |
title_full |
Leaf application of chitosan and physiological evaluation of maize hybrids contrasting for drought tolerance under water restriction. |
title_fullStr |
Leaf application of chitosan and physiological evaluation of maize hybrids contrasting for drought tolerance under water restriction. |
title_full_unstemmed |
Leaf application of chitosan and physiological evaluation of maize hybrids contrasting for drought tolerance under water restriction. |
title_sort |
Leaf application of chitosan and physiological evaluation of maize hybrids contrasting for drought tolerance under water restriction. |
author |
VERONEZE JÚNIOR, V. |
author_facet |
VERONEZE JÚNIOR, V. MARTINS, M. MC LEOD, L. SOUZA, K. R. D. SANTOS FILHO, P. R. MAGALHAES, P. C. CARVALHO, D. T. SANTOS, M. H. SOUZA, T. C. |
author_role |
author |
author2 |
MARTINS, M. MC LEOD, L. SOUZA, K. R. D. SANTOS FILHO, P. R. MAGALHAES, P. C. CARVALHO, D. T. SANTOS, M. H. SOUZA, T. C. |
author2_role |
author author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal de Alfenas; Universidade Federal de Alfenas; Universidade Federal de Alfenas; Universidade Federal de Alfenas; Universidade Federal de Alfenas; PAULO CESAR MAGALHAES, CNPMS; Universidade Federal de Alfenas; Universidade Federal de Viçosa; Universidade Federal de Alfenas. |
dc.contributor.author.fl_str_mv |
VERONEZE JÚNIOR, V. MARTINS, M. MC LEOD, L. SOUZA, K. R. D. SANTOS FILHO, P. R. MAGALHAES, P. C. CARVALHO, D. T. SANTOS, M. H. SOUZA, T. C. |
dc.subject.por.fl_str_mv |
Estresse hídrico Troca gasosa Têmpera Fluorescência da clorofila Zea Mays |
topic |
Estresse hídrico Troca gasosa Têmpera Fluorescência da clorofila Zea Mays |
description |
It is a fact that the regions that cultivate the most maize crop do not have fully adequate technologies to measure productivity losses caused by irregularities in water availability. The objective of this study was to evaluate the physiological characteristics of maize hybrids tolerant (DKB 390) and sensitive (BRS 1030) to drought, at V5 growth stage and under water restriction, in order to understand the mechanisms involved in the induction of tolerance to drought by chitosan in contrasting maize genotypes. Plants were cultivated in pots at a greenhouse, and chitosan 100 ppm was applied by leaf spraying. The water restriction was imposed for 10 days and then leaf gaseous exchange and chlorophyll fluorescence were evaluated. The tolerant hybrid (DKB 390) showed higher photosynthesis, stomatal conductance, carboxylation efficiency, electron transport rate, and non-photochemical quenching when chitosan was used. Plants from tolerant genotype treated with chitosan were more tolerant to water stress because there were more responsive to the biopolymer. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-11-05 2020-08-14T11:10:11Z 2020-08-14T11:10:11Z 2020 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Brazilian Journal of Biology, v. 80, n. 3 p. 631-640, 2020. http://www.alice.cnptia.embrapa.br/alice/handle/doc/1113902 10.1590/1519-6984.218391 |
identifier_str_mv |
Brazilian Journal of Biology, v. 80, n. 3 p. 631-640, 2020. 10.1590/1519-6984.218391 |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1113902 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
_version_ |
1794503494754893824 |