Development and assimilate partition in Phaseolus vulgaris as a function of three light levels and three nitrogen doses
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/13976 |
Resumo: | Growth, morphology, assimilate partition and dry matter production were studied in Phaseolus vulgaris L. cv. Negrito 897, under field conditions, at three light levels (30%, 70% and 100% of sunlight) and three nitrogen doses (zero, 30 and 60 kg of N/ha). Light flux densities and nitrogen levels induced modifications on the pattern of assimilate distribution, changing the growth and morphology of the plant. Solar energy reduction associated to an increase in nitrogen levels increased stem elongation and leaf area. Shoot/root ratio increased with shading and/or increment of nitrogen levels, changing the normal assimilate partition among organs, and proportionally, less amount of assimilate was exported to roots. However, the preferential sink sequence was not changed by treatments. The rate of dry matter production of the whole plant and its parts decreased with decreasing nitrogen levels and/or shading. A significant interaction between light and nitrogen on one hand and number and dry weight of the seeds on the other was observed. Reduction in light levels decreased the shoot temperature and, probably, delayed the senescence of the plant parts as a consequence of shading. |
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Development and assimilate partition in Phaseolus vulgaris as a function of three light levels and three nitrogen dosesDesenvolvimento e partição de assimilados em Phaseolus vulgaris submetido a três doses de nitrogênio e três níveis de luzcommon bean; growth; morphology; biomass; yield and solar radiationfeijão; crescimento; morfologia; biomassa; produção e radiação solarGrowth, morphology, assimilate partition and dry matter production were studied in Phaseolus vulgaris L. cv. Negrito 897, under field conditions, at three light levels (30%, 70% and 100% of sunlight) and three nitrogen doses (zero, 30 and 60 kg of N/ha). Light flux densities and nitrogen levels induced modifications on the pattern of assimilate distribution, changing the growth and morphology of the plant. Solar energy reduction associated to an increase in nitrogen levels increased stem elongation and leaf area. Shoot/root ratio increased with shading and/or increment of nitrogen levels, changing the normal assimilate partition among organs, and proportionally, less amount of assimilate was exported to roots. However, the preferential sink sequence was not changed by treatments. The rate of dry matter production of the whole plant and its parts decreased with decreasing nitrogen levels and/or shading. A significant interaction between light and nitrogen on one hand and number and dry weight of the seeds on the other was observed. Reduction in light levels decreased the shoot temperature and, probably, delayed the senescence of the plant parts as a consequence of shading. O crescimento, a morfologia, a partição de assimilados e a produção de matéria seca foram estudados em Phaseolus vulgaris L. cv. Negrito 897, em condições de campo, sob três níveis de radiação solar (100%, 70% e 30%) e três doses de nitrogênio (zero, 30 e 60 kg de N/ha). A variação da densidade do fluxo radiante e das doses de nitrogênio induziu a planta a modificar a distribuição dos seus fotoassimilados, alterando, consequentemente, seu crescimento e morfologia. A redução da radiação solar e o incremento das doses de nitrogênio promoveram o aumento da altura e da área foliar das plantas. O aumento da razão parte aérea e sistema radicular promovida pelo sombreamento, associado com o incremento das doses de nitrogênio, alterou a partição de assimilados entre os órgãos, resultando em menor proporção de assimilados nas raízes. A ordem sequencial dos drenos metabólicos preferenciais, no entanto, não foi alterada pelos níveis de luz e doses de nitrogênio. A diminuição da radiação solar incidente e das doses de nitrogênio reduziu as taxas de acúmulo de matéria seca na planta toda e em suas partes. Observou-se uma interação significativa entre luz e nitrogênio, em relação ao número de sementes, sendo o maior número alcançado ao nível de 100% de radiação associado com 60 kg de N/ha. A redução da densidade do fluxo radiante promoveu uma diminuição na temperatura da copa das plantas, o que, possivelmente, retardou a senescência de órgãos das plantas sombreadas. Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraAlmeida, Alex A. F. deLopes, Nei F.Oliva, Marco A.Barros, Raimundo S.2014-04-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/13976Pesquisa Agropecuaria Brasileira; v.23, n.8, ago. 1988; 837-847Pesquisa Agropecuária Brasileira; v.23, n.8, ago. 1988; 837-8471678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/13976/7941info:eu-repo/semantics/openAccess2014-09-16T16:56:53Zoai:ojs.seer.sct.embrapa.br:article/13976Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-09-16T16:56:53Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Development and assimilate partition in Phaseolus vulgaris as a function of three light levels and three nitrogen doses Desenvolvimento e partição de assimilados em Phaseolus vulgaris submetido a três doses de nitrogênio e três níveis de luz |
title |
Development and assimilate partition in Phaseolus vulgaris as a function of three light levels and three nitrogen doses |
spellingShingle |
Development and assimilate partition in Phaseolus vulgaris as a function of three light levels and three nitrogen doses Almeida, Alex A. F. de common bean; growth; morphology; biomass; yield and solar radiation feijão; crescimento; morfologia; biomassa; produção e radiação solar |
title_short |
Development and assimilate partition in Phaseolus vulgaris as a function of three light levels and three nitrogen doses |
title_full |
Development and assimilate partition in Phaseolus vulgaris as a function of three light levels and three nitrogen doses |
title_fullStr |
Development and assimilate partition in Phaseolus vulgaris as a function of three light levels and three nitrogen doses |
title_full_unstemmed |
Development and assimilate partition in Phaseolus vulgaris as a function of three light levels and three nitrogen doses |
title_sort |
Development and assimilate partition in Phaseolus vulgaris as a function of three light levels and three nitrogen doses |
author |
Almeida, Alex A. F. de |
author_facet |
Almeida, Alex A. F. de Lopes, Nei F. Oliva, Marco A. Barros, Raimundo S. |
author_role |
author |
author2 |
Lopes, Nei F. Oliva, Marco A. Barros, Raimundo S. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Almeida, Alex A. F. de Lopes, Nei F. Oliva, Marco A. Barros, Raimundo S. |
dc.subject.por.fl_str_mv |
common bean; growth; morphology; biomass; yield and solar radiation feijão; crescimento; morfologia; biomassa; produção e radiação solar |
topic |
common bean; growth; morphology; biomass; yield and solar radiation feijão; crescimento; morfologia; biomassa; produção e radiação solar |
description |
Growth, morphology, assimilate partition and dry matter production were studied in Phaseolus vulgaris L. cv. Negrito 897, under field conditions, at three light levels (30%, 70% and 100% of sunlight) and three nitrogen doses (zero, 30 and 60 kg of N/ha). Light flux densities and nitrogen levels induced modifications on the pattern of assimilate distribution, changing the growth and morphology of the plant. Solar energy reduction associated to an increase in nitrogen levels increased stem elongation and leaf area. Shoot/root ratio increased with shading and/or increment of nitrogen levels, changing the normal assimilate partition among organs, and proportionally, less amount of assimilate was exported to roots. However, the preferential sink sequence was not changed by treatments. The rate of dry matter production of the whole plant and its parts decreased with decreasing nitrogen levels and/or shading. A significant interaction between light and nitrogen on one hand and number and dry weight of the seeds on the other was observed. Reduction in light levels decreased the shoot temperature and, probably, delayed the senescence of the plant parts as a consequence of shading. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04-17 |
dc.type.none.fl_str_mv |
|
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/13976 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/13976 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/13976/7941 |
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 |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.23, n.8, ago. 1988; 837-847 Pesquisa Agropecuária Brasileira; v.23, n.8, ago. 1988; 837-847 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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1793416716384993280 |