Teores de pigmentos fotossintéticos e estrutura de cloroplastos de Alfavaca-cravo cultivadas sob malhas coloridas
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/11866 |
Resumo: | The Alfavaca-cravo is a medicinal specie which produces an essential oil effective in the combat of several organisms. Therefore, the understanding of the physiologic behavior and physiological responses of this behavior to environmental conditions becomes necessary to improve methods of cultivation. In this context, the aim of this study was to evaluate the effect of the intensity and quality of the light on concentration of chlorophyll and carotenoids and on chloroplasts structure of Alfavaca-cravo (Ocimum gratissimum L.). The plants with 5.0-6.0cm were submitted to the following treatments: full sunlight and 50% of shade under blue, red and black nets during 120 days. The chlorophyll and carotenoids concentration were analyzed through spectrophotometer and the structure of chloroplast was analyzed by transmission microscopy. Plants maintained under full sunlight had the lowest chlorophyll a and b concentration and the highest carotenoids concentration. However, plants cultivated under black net had the highest production of chlorophyll a and b. The lowest chloroplasts density was found in plants under black net. In the treatments with 50% of shade was verified more elongated chloroplasts. Alfavaca-cravo plants grown under full sunlight and blue net had chloroplasts with larger areas and starch grains with larger perimeters. The changes on the pigments concentration and structure of chloroplasts showed a chromatic adaptation of Alfavaca-cravo to the variation of the intensity and quality of the light. This can improve photosynthetic performance under different luminosity conditions. |
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Teores de pigmentos fotossintéticos e estrutura de cloroplastos de Alfavaca-cravo cultivadas sob malhas coloridasPigments content and Alfavaca-cravo chloroplast structure cultivate under colored netsAlfavaca – FisiologiaPlantas medicinais – Efeito da luzClorofilaCarotenóidesCloroplastosÓleo essencialSweet basil – PhysiologyMedicinal plants – Effect of lightChlorophyllCarotenoidsChloroplastsEssential oilOcimum gratissimumThe Alfavaca-cravo is a medicinal specie which produces an essential oil effective in the combat of several organisms. Therefore, the understanding of the physiologic behavior and physiological responses of this behavior to environmental conditions becomes necessary to improve methods of cultivation. In this context, the aim of this study was to evaluate the effect of the intensity and quality of the light on concentration of chlorophyll and carotenoids and on chloroplasts structure of Alfavaca-cravo (Ocimum gratissimum L.). The plants with 5.0-6.0cm were submitted to the following treatments: full sunlight and 50% of shade under blue, red and black nets during 120 days. The chlorophyll and carotenoids concentration were analyzed through spectrophotometer and the structure of chloroplast was analyzed by transmission microscopy. Plants maintained under full sunlight had the lowest chlorophyll a and b concentration and the highest carotenoids concentration. However, plants cultivated under black net had the highest production of chlorophyll a and b. The lowest chloroplasts density was found in plants under black net. In the treatments with 50% of shade was verified more elongated chloroplasts. Alfavaca-cravo plants grown under full sunlight and blue net had chloroplasts with larger areas and starch grains with larger perimeters. The changes on the pigments concentration and structure of chloroplasts showed a chromatic adaptation of Alfavaca-cravo to the variation of the intensity and quality of the light. This can improve photosynthetic performance under different luminosity conditions.A Alfavaca-cravo é uma espécie medicinal produtora de óleo essencial de elevada eficácia no combate de diversos organismos patogênicos. Por isso, o entendimento do comportamento fisiológico dessa espécie e as respostas desse comportamento às condições do ambiente tornam-se necessários ao aperfeiçoamento dos métodos de cultivo. Nesse contexto, este estudo objetivou avaliar o efeito da intensidade e qualidade da luz nos teores de clorofila e carotenoides e na estrutura de cloroplastos de Alfavaca-cravo, Ocimum gratissimum L. As plantas com 5,0-6,0cm foram submetidas aos seguintes tratamentos: pleno sol, sombreamento 50% sob malha azul, malha vermelha e malha preta durante 120 dias. As concentrações de clorofilas e carotenoides foram avaliadas por espectrofotometria, e as estruturas dos cloroplastos foram analisadas pela microscopia de transmissão. As plantas mantidas a pleno sol tiveram os menores teores de clorofila a e b e o maior teor de carotenoides, enquanto aquelas cultivadas sob malha preta tiveram a maior concentração de clorofila a e b. A menor densidade de cloroplastos foi encontrada nas plantas sob malha preta. Nos tratamentos com 50% de sombreamento, foram verificados cloroplastos mais alongados. As plantas de alfavaca-cravo crescidas a pleno sol e sob malha azul tiveram cloroplastos com maiores áreas e grãos de amido com maiores perímetros. As mudanças nas concentrações dos pigmentos e na estrutura dos cloroplastos evidenciaram uma adaptação da Alfavaca-cravo à variação de intensidade e qualidade da luz. Isso pode auxiliar no desempenho fotossintético sob diferentes condições luminosas.Universidade Federal de Santa Maria2016-10-05T16:29:47Z2016-10-05T16:29:47Z2009-09-03info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfMARTINS, J. R. et al. Teores de pigmentos fotossintéticos e estrutura de cloroplastos de Alfavaca-cravo cultivadas sob malhas coloridas. Ciência Rural, Santa Maria, v. 40, n.1, jan./fev. 2010. Não paginado. Registro DOI: http://dx.doi.org/10.1590/S0103-84782010000100011.http://repositorio.ufla.br/jspui/handle/1/11866Ciência Ruralreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAMartins, Joeferson ReisAlvarenga, Amauri Alves deCastro, Evaristo Mauro deSilva, Ana Paula Oliveira daAlves, Eduardoinfo:eu-repo/semantics/openAccesspor2023-05-26T19:53:02Zoai:localhost:1/11866Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2023-05-26T19:53:02Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Teores de pigmentos fotossintéticos e estrutura de cloroplastos de Alfavaca-cravo cultivadas sob malhas coloridas Pigments content and Alfavaca-cravo chloroplast structure cultivate under colored nets |
title |
Teores de pigmentos fotossintéticos e estrutura de cloroplastos de Alfavaca-cravo cultivadas sob malhas coloridas |
spellingShingle |
Teores de pigmentos fotossintéticos e estrutura de cloroplastos de Alfavaca-cravo cultivadas sob malhas coloridas Martins, Joeferson Reis Alfavaca – Fisiologia Plantas medicinais – Efeito da luz Clorofila Carotenóides Cloroplastos Óleo essencial Sweet basil – Physiology Medicinal plants – Effect of light Chlorophyll Carotenoids Chloroplasts Essential oil Ocimum gratissimum |
title_short |
Teores de pigmentos fotossintéticos e estrutura de cloroplastos de Alfavaca-cravo cultivadas sob malhas coloridas |
title_full |
Teores de pigmentos fotossintéticos e estrutura de cloroplastos de Alfavaca-cravo cultivadas sob malhas coloridas |
title_fullStr |
Teores de pigmentos fotossintéticos e estrutura de cloroplastos de Alfavaca-cravo cultivadas sob malhas coloridas |
title_full_unstemmed |
Teores de pigmentos fotossintéticos e estrutura de cloroplastos de Alfavaca-cravo cultivadas sob malhas coloridas |
title_sort |
Teores de pigmentos fotossintéticos e estrutura de cloroplastos de Alfavaca-cravo cultivadas sob malhas coloridas |
author |
Martins, Joeferson Reis |
author_facet |
Martins, Joeferson Reis Alvarenga, Amauri Alves de Castro, Evaristo Mauro de Silva, Ana Paula Oliveira da Alves, Eduardo |
author_role |
author |
author2 |
Alvarenga, Amauri Alves de Castro, Evaristo Mauro de Silva, Ana Paula Oliveira da Alves, Eduardo |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Martins, Joeferson Reis Alvarenga, Amauri Alves de Castro, Evaristo Mauro de Silva, Ana Paula Oliveira da Alves, Eduardo |
dc.subject.por.fl_str_mv |
Alfavaca – Fisiologia Plantas medicinais – Efeito da luz Clorofila Carotenóides Cloroplastos Óleo essencial Sweet basil – Physiology Medicinal plants – Effect of light Chlorophyll Carotenoids Chloroplasts Essential oil Ocimum gratissimum |
topic |
Alfavaca – Fisiologia Plantas medicinais – Efeito da luz Clorofila Carotenóides Cloroplastos Óleo essencial Sweet basil – Physiology Medicinal plants – Effect of light Chlorophyll Carotenoids Chloroplasts Essential oil Ocimum gratissimum |
description |
The Alfavaca-cravo is a medicinal specie which produces an essential oil effective in the combat of several organisms. Therefore, the understanding of the physiologic behavior and physiological responses of this behavior to environmental conditions becomes necessary to improve methods of cultivation. In this context, the aim of this study was to evaluate the effect of the intensity and quality of the light on concentration of chlorophyll and carotenoids and on chloroplasts structure of Alfavaca-cravo (Ocimum gratissimum L.). The plants with 5.0-6.0cm were submitted to the following treatments: full sunlight and 50% of shade under blue, red and black nets during 120 days. The chlorophyll and carotenoids concentration were analyzed through spectrophotometer and the structure of chloroplast was analyzed by transmission microscopy. Plants maintained under full sunlight had the lowest chlorophyll a and b concentration and the highest carotenoids concentration. However, plants cultivated under black net had the highest production of chlorophyll a and b. The lowest chloroplasts density was found in plants under black net. In the treatments with 50% of shade was verified more elongated chloroplasts. Alfavaca-cravo plants grown under full sunlight and blue net had chloroplasts with larger areas and starch grains with larger perimeters. The changes on the pigments concentration and structure of chloroplasts showed a chromatic adaptation of Alfavaca-cravo to the variation of the intensity and quality of the light. This can improve photosynthetic performance under different luminosity conditions. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-09-03 2016-10-05T16:29:47Z 2016-10-05T16:29:47Z |
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 |
MARTINS, J. R. et al. Teores de pigmentos fotossintéticos e estrutura de cloroplastos de Alfavaca-cravo cultivadas sob malhas coloridas. Ciência Rural, Santa Maria, v. 40, n.1, jan./fev. 2010. Não paginado. Registro DOI: http://dx.doi.org/10.1590/S0103-84782010000100011. http://repositorio.ufla.br/jspui/handle/1/11866 |
identifier_str_mv |
MARTINS, J. R. et al. Teores de pigmentos fotossintéticos e estrutura de cloroplastos de Alfavaca-cravo cultivadas sob malhas coloridas. Ciência Rural, Santa Maria, v. 40, n.1, jan./fev. 2010. Não paginado. Registro DOI: http://dx.doi.org/10.1590/S0103-84782010000100011. |
url |
http://repositorio.ufla.br/jspui/handle/1/11866 |
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por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
dc.source.none.fl_str_mv |
Ciência Rural reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Repositório Institucional da UFLA |
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Repositório Institucional da UFLA |
repository.name.fl_str_mv |
Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
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1807835164485615616 |