Atividade da redutase do nitrato, teores de nitrogênio e de carboidratos em cafeeiro influenciados pelo sombreamento e estádio fenológico
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | LOCUS Repositório Institucional da UFV |
Texto Completo: | http://locus.ufv.br/handle/123456789/4456 |
Resumo: | The objective was to evaluate the activity of the enzyme reductase of nitrate, contents of nitrogen and carbohydrates in leaves of Arabian coffee plant under different levels of shading and position over the plant, during the phases of development of the fruit. The experiment was lead in fortuitous block-type in the project of subdivided parts, with three repetitions. The parts were constituted by the levels of shading (0%, 16%, 32% and 48%), the subparts for three positions of sampling over the plant and the subpart for six phases of development of the fruit. Samples of 3rd and 4th pair of situated branch leaves in three different positions (apex, 3rd medium and base) of the coffee plant were collected. In each position, leaves were collected in the cardinal points (N, S, W, E) of each plant. To the 12 (post- flowering), 69 (fast expansion), 98 (fast expansion), 137 (seed-filling), 169 (seed-filling) and 199 (maturation) days after anthesis, were determined: activity of nitrate reductase (NR); nitrate contents (NO3-), organic nitrogen (ON), total nitrogen (TN); starch contents (SC), reducing sugars (RS), non-reducing (NRS) and total soluble sugar (TSS). In general, the apex of the coffee plant presented lesser contents of NO3- in the seed-filling and maturation phase of the fruit. The contents of NO3- in coffee leaves were higher in the plants with 48% of shading, during the fruit maturation stage. During the fruit development, independently of the studied shading, the activity of the RN was lesser in the fruit maturation stage. The contents ON and TN, in leaves of the apex, were higher in the stage of fast expansion of the fruit. The carbohydrate contents in coffee plant leaves had increased with the development of the fruit, which SC content was higher in the plants under the full sun, and NRS and TSS contents were higher in the plants under 48% of shading. The results suggest that the shading not only influences the photosynthesis, but also the metabolism of nitrogen. Nevertheless, one expects different answers to the shading in different nitrogen availabilities. |
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Khouri, Camila Rodrigueshttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4702025J3Santos, Ricardo Henrique Silvahttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4723069A2Leite, Roberto de Aquinohttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4785893P8Pereira, Paulo Roberto Gomeshttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783793Y8Finger, Fernando Luizhttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783681Y0Lima, Paulo César dehttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783693J72015-03-26T13:39:19Z2008-02-292015-03-26T13:39:19Z2007-05-03KHOURI, Camila Rodrigues. Nitrate reductase activity, contents of nitrogen and carbohydrates in coffee plant influenced by the shading and phenology phase. 2007. 63 f. Dissertação (Mestrado em Plantas daninhas, Alelopatia, Herbicidas e Resíduos; Fisiologia de culturas; Manejo pós-colheita de) - Universidade Federal de Viçosa, Viçosa, 2007.http://locus.ufv.br/handle/123456789/4456The objective was to evaluate the activity of the enzyme reductase of nitrate, contents of nitrogen and carbohydrates in leaves of Arabian coffee plant under different levels of shading and position over the plant, during the phases of development of the fruit. The experiment was lead in fortuitous block-type in the project of subdivided parts, with three repetitions. The parts were constituted by the levels of shading (0%, 16%, 32% and 48%), the subparts for three positions of sampling over the plant and the subpart for six phases of development of the fruit. Samples of 3rd and 4th pair of situated branch leaves in three different positions (apex, 3rd medium and base) of the coffee plant were collected. In each position, leaves were collected in the cardinal points (N, S, W, E) of each plant. To the 12 (post- flowering), 69 (fast expansion), 98 (fast expansion), 137 (seed-filling), 169 (seed-filling) and 199 (maturation) days after anthesis, were determined: activity of nitrate reductase (NR); nitrate contents (NO3-), organic nitrogen (ON), total nitrogen (TN); starch contents (SC), reducing sugars (RS), non-reducing (NRS) and total soluble sugar (TSS). In general, the apex of the coffee plant presented lesser contents of NO3- in the seed-filling and maturation phase of the fruit. The contents of NO3- in coffee leaves were higher in the plants with 48% of shading, during the fruit maturation stage. During the fruit development, independently of the studied shading, the activity of the RN was lesser in the fruit maturation stage. The contents ON and TN, in leaves of the apex, were higher in the stage of fast expansion of the fruit. The carbohydrate contents in coffee plant leaves had increased with the development of the fruit, which SC content was higher in the plants under the full sun, and NRS and TSS contents were higher in the plants under 48% of shading. The results suggest that the shading not only influences the photosynthesis, but also the metabolism of nitrogen. Nevertheless, one expects different answers to the shading in different nitrogen availabilities.Objetivou-se, avaliar a atividade da enzima redutase do nitrato, os teores de nitrogênio e de carboidratos em folhas de cafeeiro arábico sob diferentes níveis de sombreamento e posição na planta, durante as fases de desenvolvimento do fruto. O experimento foi conduzido em blocos casualizados no esquema de parcelas sub-subdivididas, com três repetições. As parcelas foram constituídas pelos níveis de sombreamento (0%, 16%, 32% e 48%), as subparcelas por três posições de amostragem na planta e a sub-subparcela por seis estádios de desenvolvimento do fruto. Foram coletadas amostras do 3º e 4º par de folhas de ramos situados em três diferentes posições (ápice, terço médio e base) do cafeeiro. Em cada posição foram coletadas folhas nos pontos cardeais (N, S, L, E) de cada planta. Aos 12 (chumbinho), 69 (expansão rápida), 98 (expansão rápida), 137 (granação), 169 (granação) e 199 (maturação) dias após antese, foram determinados: atividade da redutase do nitrato (RN); teores de nitrato (NO3-), nitrogênio orgânico (NORG), nitrogênio total (NT); teores de amido (AM), açúcares redutores (AR), não redutores (ANR) e solúvel total (AST). Em geral, o ápice do cafeeiro apresentou os menores teores de NO3- na fase de granação e maturação do fruto. Os teores de NO3- em folhas de café foram maiores nas plantas a 48% de sombreamento, no estádio de maturação do fruto. Ao longo do desenvolvimento do fruto, independentemente do sombreamento estudado, a atividade da RN foi menor no estádio de maturação do fruto. Os teores NORG e NT, nas folhas do ápice, foram maiores no estádio de expansão rápida do fruto. Os teores de carboidratos em folhas de cafeeiro aumentaram com o desenvolvimento do fruto, cujo teor de AM foi maior nas plantas a pleno sol, e os teores de ANR e AST foram maiores nas plantas a 48% de sombreamento. Os resultados sugerem que o sombreamento influencia não só a fotossíntese, mas também o metabolismo do nitrogênio. Assim sendo, espera-se diferentes respostas ao sombreamento em diferentes disponibilidades de nitrogênio.Conselho Nacional de Desenvolvimento Científico e Tecnológicoapplication/pdfporUniversidade Federal de ViçosaMestrado em FitotecniaUFVBRPlantas daninhas, Alelopatia, Herbicidas e Resíduos; Fisiologia de culturas; Manejo pós-colheita deCoffea arabicaNitratoNutriçãoCoffea arabicaNitrateNutritionCNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOTECNIAAtividade da redutase do nitrato, teores de nitrogênio e de carboidratos em cafeeiro influenciados pelo sombreamento e estádio fenológicoNitrate reductase activity, contents of nitrogen and carbohydrates in coffee plant influenced by the shading and phenology phaseinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/openAccessreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFVORIGINALtexto completo.pdfapplication/pdf762698https://locus.ufv.br//bitstream/123456789/4456/1/texto%20completo.pdfc8b0c541d15f07eca0e81097636821bcMD51TEXTtexto completo.pdf.txttexto completo.pdf.txtExtracted texttext/plain95958https://locus.ufv.br//bitstream/123456789/4456/2/texto%20completo.pdf.txt16b541afb5779ad134bd06bc5b6f22c1MD52THUMBNAILtexto completo.pdf.jpgtexto completo.pdf.jpgIM Thumbnailimage/jpeg3676https://locus.ufv.br//bitstream/123456789/4456/3/texto%20completo.pdf.jpgc45c0a6223ea9a4c00acea012740e878MD53123456789/44562016-04-07 23:04:35.625oai:locus.ufv.br:123456789/4456Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452016-04-08T02:04:35LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false |
dc.title.por.fl_str_mv |
Atividade da redutase do nitrato, teores de nitrogênio e de carboidratos em cafeeiro influenciados pelo sombreamento e estádio fenológico |
dc.title.alternative.eng.fl_str_mv |
Nitrate reductase activity, contents of nitrogen and carbohydrates in coffee plant influenced by the shading and phenology phase |
title |
Atividade da redutase do nitrato, teores de nitrogênio e de carboidratos em cafeeiro influenciados pelo sombreamento e estádio fenológico |
spellingShingle |
Atividade da redutase do nitrato, teores de nitrogênio e de carboidratos em cafeeiro influenciados pelo sombreamento e estádio fenológico Khouri, Camila Rodrigues Coffea arabica Nitrato Nutrição Coffea arabica Nitrate Nutrition CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOTECNIA |
title_short |
Atividade da redutase do nitrato, teores de nitrogênio e de carboidratos em cafeeiro influenciados pelo sombreamento e estádio fenológico |
title_full |
Atividade da redutase do nitrato, teores de nitrogênio e de carboidratos em cafeeiro influenciados pelo sombreamento e estádio fenológico |
title_fullStr |
Atividade da redutase do nitrato, teores de nitrogênio e de carboidratos em cafeeiro influenciados pelo sombreamento e estádio fenológico |
title_full_unstemmed |
Atividade da redutase do nitrato, teores de nitrogênio e de carboidratos em cafeeiro influenciados pelo sombreamento e estádio fenológico |
title_sort |
Atividade da redutase do nitrato, teores de nitrogênio e de carboidratos em cafeeiro influenciados pelo sombreamento e estádio fenológico |
author |
Khouri, Camila Rodrigues |
author_facet |
Khouri, Camila Rodrigues |
author_role |
author |
dc.contributor.authorLattes.por.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4702025J3 |
dc.contributor.author.fl_str_mv |
Khouri, Camila Rodrigues |
dc.contributor.advisor-co1.fl_str_mv |
Santos, Ricardo Henrique Silva |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4723069A2 |
dc.contributor.advisor-co2.fl_str_mv |
Leite, Roberto de Aquino |
dc.contributor.advisor-co2Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4785893P8 |
dc.contributor.advisor1.fl_str_mv |
Pereira, Paulo Roberto Gomes |
dc.contributor.advisor1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783793Y8 |
dc.contributor.referee1.fl_str_mv |
Finger, Fernando Luiz |
dc.contributor.referee1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783681Y0 |
dc.contributor.referee2.fl_str_mv |
Lima, Paulo César de |
dc.contributor.referee2Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783693J7 |
contributor_str_mv |
Santos, Ricardo Henrique Silva Leite, Roberto de Aquino Pereira, Paulo Roberto Gomes Finger, Fernando Luiz Lima, Paulo César de |
dc.subject.por.fl_str_mv |
Coffea arabica Nitrato Nutrição |
topic |
Coffea arabica Nitrato Nutrição Coffea arabica Nitrate Nutrition CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOTECNIA |
dc.subject.eng.fl_str_mv |
Coffea arabica Nitrate Nutrition |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOTECNIA |
description |
The objective was to evaluate the activity of the enzyme reductase of nitrate, contents of nitrogen and carbohydrates in leaves of Arabian coffee plant under different levels of shading and position over the plant, during the phases of development of the fruit. The experiment was lead in fortuitous block-type in the project of subdivided parts, with three repetitions. The parts were constituted by the levels of shading (0%, 16%, 32% and 48%), the subparts for three positions of sampling over the plant and the subpart for six phases of development of the fruit. Samples of 3rd and 4th pair of situated branch leaves in three different positions (apex, 3rd medium and base) of the coffee plant were collected. In each position, leaves were collected in the cardinal points (N, S, W, E) of each plant. To the 12 (post- flowering), 69 (fast expansion), 98 (fast expansion), 137 (seed-filling), 169 (seed-filling) and 199 (maturation) days after anthesis, were determined: activity of nitrate reductase (NR); nitrate contents (NO3-), organic nitrogen (ON), total nitrogen (TN); starch contents (SC), reducing sugars (RS), non-reducing (NRS) and total soluble sugar (TSS). In general, the apex of the coffee plant presented lesser contents of NO3- in the seed-filling and maturation phase of the fruit. The contents of NO3- in coffee leaves were higher in the plants with 48% of shading, during the fruit maturation stage. During the fruit development, independently of the studied shading, the activity of the RN was lesser in the fruit maturation stage. The contents ON and TN, in leaves of the apex, were higher in the stage of fast expansion of the fruit. The carbohydrate contents in coffee plant leaves had increased with the development of the fruit, which SC content was higher in the plants under the full sun, and NRS and TSS contents were higher in the plants under 48% of shading. The results suggest that the shading not only influences the photosynthesis, but also the metabolism of nitrogen. Nevertheless, one expects different answers to the shading in different nitrogen availabilities. |
publishDate |
2007 |
dc.date.issued.fl_str_mv |
2007-05-03 |
dc.date.available.fl_str_mv |
2008-02-29 2015-03-26T13:39:19Z |
dc.date.accessioned.fl_str_mv |
2015-03-26T13:39:19Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
KHOURI, Camila Rodrigues. Nitrate reductase activity, contents of nitrogen and carbohydrates in coffee plant influenced by the shading and phenology phase. 2007. 63 f. Dissertação (Mestrado em Plantas daninhas, Alelopatia, Herbicidas e Resíduos; Fisiologia de culturas; Manejo pós-colheita de) - Universidade Federal de Viçosa, Viçosa, 2007. |
dc.identifier.uri.fl_str_mv |
http://locus.ufv.br/handle/123456789/4456 |
identifier_str_mv |
KHOURI, Camila Rodrigues. Nitrate reductase activity, contents of nitrogen and carbohydrates in coffee plant influenced by the shading and phenology phase. 2007. 63 f. Dissertação (Mestrado em Plantas daninhas, Alelopatia, Herbicidas e Resíduos; Fisiologia de culturas; Manejo pós-colheita de) - Universidade Federal de Viçosa, Viçosa, 2007. |
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http://locus.ufv.br/handle/123456789/4456 |
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por |
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Universidade Federal de Viçosa |
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Mestrado em Fitotecnia |
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UFV |
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BR |
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Plantas daninhas, Alelopatia, Herbicidas e Resíduos; Fisiologia de culturas; Manejo pós-colheita de |
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Universidade Federal de Viçosa |
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