Relation between nitrogen source and plant growth regulators on tomato growth and nutrient uptake

Detalhes bibliográficos
Autor(a) principal: Magalhães, José R.
Data de Publicação: 2014
Outros Autores: Wilcox, Gerald E.
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/14393
Resumo: Tomato plants (Lycopersicon esculentum L.) were grown in sand culture with NH4+ or NO3- sources of N and four plant growth regulators (Cytokinine (CK), Trycotanol (TCOT), ABA (Abscisic acid) and Cycocel (CCC)). In general, the plant growth regulators had no significant effect on tomato growth except CCC which reduced dry weight in plants supplied with NO3-. Ammonium reduced plant growth as compared to NO3-, for all treatments but CCC. The cations K, Ca and Mg content in tissue decreased with NH4+ treatment as compared to NO3-. However Trycotanol tended to reduce this effect by increasing Ca in plants. CCC enhanced nitrate content in plant shoot supplied with NO3-, but had no effect on plants supplied with NH4+. Every plant growth regulator increased free NH4+ in plant shoots supplied with that N source.
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spelling Relation between nitrogen source and plant growth regulators on tomato growth and nutrient uptakeInteração entre formas de nitrogênio e reguladores de crescimento na absorção de nutrientes e produção de matéria seca pelo tomateirotomato; Lycopersicon esculentum; NH4; NO3tomate; Lycopersicon esculenyum; NH4 ; NO3Tomato plants (Lycopersicon esculentum L.) were grown in sand culture with NH4+ or NO3- sources of N and four plant growth regulators (Cytokinine (CK), Trycotanol (TCOT), ABA (Abscisic acid) and Cycocel (CCC)). In general, the plant growth regulators had no significant effect on tomato growth except CCC which reduced dry weight in plants supplied with NO3-. Ammonium reduced plant growth as compared to NO3-, for all treatments but CCC. The cations K, Ca and Mg content in tissue decreased with NH4+ treatment as compared to NO3-. However Trycotanol tended to reduce this effect by increasing Ca in plants. CCC enhanced nitrate content in plant shoot supplied with NO3-, but had no effect on plants supplied with NH4+. Every plant growth regulator increased free NH4+ in plant shoots supplied with that N source.Plantas de tomate (Lycopersicon esculentum L.) foram cultivadas em areia com solução nutritiva, contendo nitrogênio na forma de NH4+ ou NO3- em combinação com quatro reguladores de crescimento (citocinina (CK), tricotanol (TCOT), AAb (Ácido absíssico) e cicocel (CCC)). De um modo geral, os reguladores utilizados não tiveram efeitos significativos no crescimento das plantas, com exceção do CCC que reduziu o peso seco das plantas supridas com NO3-. O N na forma amoniacal reduziu drasticamente o crescimento em todos os tratamentos, exceto com o CCC. O N na forma amoniacal reduziu o teor dos cátions K, Ca e Mg na planta. O regulador de crescimento tricotanol apresentou uma tendência em aumentar a absorção de Ca pelas plantas. O uso de CCC aumentou significativamente o nível de nitrato na parte aérea das plantas supridas com essa forma de N, não tendo efeito para a forma amoniacal. Todos os reguladores de crescimento utilizados aumentaram a concentração de amônio livre na parte aérea das plantas supridas com NH4+.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraMagalhães, José R.Wilcox, Gerald E.2014-04-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/14393Pesquisa Agropecuaria Brasileira; v.22, n.6, jun. 1987; 579-585Pesquisa Agropecuária Brasileira; v.22, n.6, jun. 1987; 579-5851678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/14393/8289info:eu-repo/semantics/openAccess2014-10-06T19:05:55Zoai:ojs.seer.sct.embrapa.br:article/14393Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-10-06T19:05:55Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Relation between nitrogen source and plant growth regulators on tomato growth and nutrient uptake
Interação entre formas de nitrogênio e reguladores de crescimento na absorção de nutrientes e produção de matéria seca pelo tomateiro
title Relation between nitrogen source and plant growth regulators on tomato growth and nutrient uptake
spellingShingle Relation between nitrogen source and plant growth regulators on tomato growth and nutrient uptake
Magalhães, José R.
tomato; Lycopersicon esculentum; NH4; NO3
tomate; Lycopersicon esculenyum; NH4 ; NO3
title_short Relation between nitrogen source and plant growth regulators on tomato growth and nutrient uptake
title_full Relation between nitrogen source and plant growth regulators on tomato growth and nutrient uptake
title_fullStr Relation between nitrogen source and plant growth regulators on tomato growth and nutrient uptake
title_full_unstemmed Relation between nitrogen source and plant growth regulators on tomato growth and nutrient uptake
title_sort Relation between nitrogen source and plant growth regulators on tomato growth and nutrient uptake
author Magalhães, José R.
author_facet Magalhães, José R.
Wilcox, Gerald E.
author_role author
author2 Wilcox, Gerald E.
author2_role author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Magalhães, José R.
Wilcox, Gerald E.
dc.subject.por.fl_str_mv tomato; Lycopersicon esculentum; NH4; NO3
tomate; Lycopersicon esculenyum; NH4 ; NO3
topic tomato; Lycopersicon esculentum; NH4; NO3
tomate; Lycopersicon esculenyum; NH4 ; NO3
description Tomato plants (Lycopersicon esculentum L.) were grown in sand culture with NH4+ or NO3- sources of N and four plant growth regulators (Cytokinine (CK), Trycotanol (TCOT), ABA (Abscisic acid) and Cycocel (CCC)). In general, the plant growth regulators had no significant effect on tomato growth except CCC which reduced dry weight in plants supplied with NO3-. Ammonium reduced plant growth as compared to NO3-, for all treatments but CCC. The cations K, Ca and Mg content in tissue decreased with NH4+ treatment as compared to NO3-. However Trycotanol tended to reduce this effect by increasing Ca in plants. CCC enhanced nitrate content in plant shoot supplied with NO3-, but had no effect on plants supplied with NH4+. Every plant growth regulator increased free NH4+ in plant shoots supplied with that N source.
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/14393
url https://seer.sct.embrapa.br/index.php/pab/article/view/14393
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/14393/8289
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.22, n.6, jun. 1987; 579-585
Pesquisa Agropecuária Brasileira; v.22, n.6, jun. 1987; 579-585
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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