Hydrocyanic acid content in cassava tissues as a function of evaluation time and nitrogen fertilization

Detalhes bibliográficos
Autor(a) principal: Oliveira, Natália Trajano de
Data de Publicação: 2012
Outros Autores: Uchôa, Sandra Cátia Pereira, Alves, José Maria Arcanjo, Sediyama, Tocio, Albuquerque, José de Anchieta Alves de, Souza, Everton Diel, Melville, Cirano Cruz
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/12803
Resumo: The objective of this work was to evaluate hydrocyanic acid contents in cassava plants, according to the evaluation time and nitrogen fertilization. A randomized complete block design was used in a split‑plot arrangement, with four replicates. Nitrogen topdressing doses (0, 30, 60, 150, and 330 kg ha-1) were allocated in the plots, and the evaluation times (90, 120, 150, 180, 240, 300, and 360 days after planting), in the subplots. Hydrocyanic acid content was evaluated on leaf tissue, stalk, pulp, and root skins of the Aciolina cultivar. The effects of N doses and harvest times were independent. Nitrogen levels between 219 and 241 kg ha-1 provide the highest hydrocyanic acid contents, varying from 332 to 401 mg kg-1 of fresh matter in the evaluated tissues. Prolonging the evaluation time linearly reduces the hydrocyanic acid content in the tissues. Root skins accumulate the highest level of hydrocyanic acid, and the root pulp the lowest. At harvest, 360 days after planting, this cultivar is classified as sweet cassava.
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spelling Hydrocyanic acid content in cassava tissues as a function of evaluation time and nitrogen fertilizationÁcido cianídrico em tecidos de mandioca em função da idade da planta e adubação nitrogenadaManihot esculenta; cyanogenic glycosides; linamarin; lotaustralinManihot esculenta; glicosídeos cianogênicos; linamarina; lotaustralinaThe objective of this work was to evaluate hydrocyanic acid contents in cassava plants, according to the evaluation time and nitrogen fertilization. A randomized complete block design was used in a split‑plot arrangement, with four replicates. Nitrogen topdressing doses (0, 30, 60, 150, and 330 kg ha-1) were allocated in the plots, and the evaluation times (90, 120, 150, 180, 240, 300, and 360 days after planting), in the subplots. Hydrocyanic acid content was evaluated on leaf tissue, stalk, pulp, and root skins of the Aciolina cultivar. The effects of N doses and harvest times were independent. Nitrogen levels between 219 and 241 kg ha-1 provide the highest hydrocyanic acid contents, varying from 332 to 401 mg kg-1 of fresh matter in the evaluated tissues. Prolonging the evaluation time linearly reduces the hydrocyanic acid content in the tissues. Root skins accumulate the highest level of hydrocyanic acid, and the root pulp the lowest. At harvest, 360 days after planting, this cultivar is classified as sweet cassava.O objetivo deste trabalho foi avaliar o teor de ácido cianídrico em tecidos de mandioca, em função da idade da planta e níveis de adubação nitrogenada. Utilizou-se o delineamento experimental de blocos ao acaso, em arranjo de parcelas subdivididas, com quatro repetições. As doses de nitrogênio em cobertura (0, 30, 60, 150 e 330 kg ha-1) foram alocadas nas parcelas, e as épocas de avaliação (90, 120, 150, 180, 240, 300 e 360 dias após o plantio), nas subparcelas. Os teores de ácido cianídrico foram avaliados em tecidos da folha, caule, polpa e córtex da raiz da cultivar Aciolina. Os efeitos das doses de N e das épocas de avaliação foram independentes. Doses entre 219 e 241 kg ha-1 de N em cobertura proporcionam os maiores teores de ácido cianídrico, que variaram de 332 a 401 mg kg-1 de matéria fresca nos tecidos avaliados. O teor de ácido cianídrico nos tecidos reduz-se linearmente com a idade da planta. O córtex da raiz acumula o maior teor de ácido cianídrico, e a polpa da raiz o menor. Por ocasião da colheita, aos 360 dias após o plantio, essa cultivaré classificada como mandioca mansa.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraCAPESOliveira, Natália Trajano deUchôa, Sandra Cátia PereiraAlves, José Maria ArcanjoSediyama, TocioAlbuquerque, José de Anchieta Alves deSouza, Everton DielMelville, Cirano Cruz2012-11-29info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/12803Pesquisa Agropecuaria Brasileira; v.47, n.10, out. 2012; 1436-1442Pesquisa Agropecuária Brasileira; v.47, n.10, out. 2012; 1436-14421678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/12803/8140https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/12803/8523info:eu-repo/semantics/openAccess2012-12-04T20:59:36Zoai:ojs.seer.sct.embrapa.br:article/12803Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2012-12-04T20:59:36Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Hydrocyanic acid content in cassava tissues as a function of evaluation time and nitrogen fertilization
Ácido cianídrico em tecidos de mandioca em função da idade da planta e adubação nitrogenada
title Hydrocyanic acid content in cassava tissues as a function of evaluation time and nitrogen fertilization
spellingShingle Hydrocyanic acid content in cassava tissues as a function of evaluation time and nitrogen fertilization
Oliveira, Natália Trajano de
Manihot esculenta; cyanogenic glycosides; linamarin; lotaustralin
Manihot esculenta; glicosídeos cianogênicos; linamarina; lotaustralina
title_short Hydrocyanic acid content in cassava tissues as a function of evaluation time and nitrogen fertilization
title_full Hydrocyanic acid content in cassava tissues as a function of evaluation time and nitrogen fertilization
title_fullStr Hydrocyanic acid content in cassava tissues as a function of evaluation time and nitrogen fertilization
title_full_unstemmed Hydrocyanic acid content in cassava tissues as a function of evaluation time and nitrogen fertilization
title_sort Hydrocyanic acid content in cassava tissues as a function of evaluation time and nitrogen fertilization
author Oliveira, Natália Trajano de
author_facet Oliveira, Natália Trajano de
Uchôa, Sandra Cátia Pereira
Alves, José Maria Arcanjo
Sediyama, Tocio
Albuquerque, José de Anchieta Alves de
Souza, Everton Diel
Melville, Cirano Cruz
author_role author
author2 Uchôa, Sandra Cátia Pereira
Alves, José Maria Arcanjo
Sediyama, Tocio
Albuquerque, José de Anchieta Alves de
Souza, Everton Diel
Melville, Cirano Cruz
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv
CAPES
dc.contributor.author.fl_str_mv Oliveira, Natália Trajano de
Uchôa, Sandra Cátia Pereira
Alves, José Maria Arcanjo
Sediyama, Tocio
Albuquerque, José de Anchieta Alves de
Souza, Everton Diel
Melville, Cirano Cruz
dc.subject.por.fl_str_mv Manihot esculenta; cyanogenic glycosides; linamarin; lotaustralin
Manihot esculenta; glicosídeos cianogênicos; linamarina; lotaustralina
topic Manihot esculenta; cyanogenic glycosides; linamarin; lotaustralin
Manihot esculenta; glicosídeos cianogênicos; linamarina; lotaustralina
description The objective of this work was to evaluate hydrocyanic acid contents in cassava plants, according to the evaluation time and nitrogen fertilization. A randomized complete block design was used in a split‑plot arrangement, with four replicates. Nitrogen topdressing doses (0, 30, 60, 150, and 330 kg ha-1) were allocated in the plots, and the evaluation times (90, 120, 150, 180, 240, 300, and 360 days after planting), in the subplots. Hydrocyanic acid content was evaluated on leaf tissue, stalk, pulp, and root skins of the Aciolina cultivar. The effects of N doses and harvest times were independent. Nitrogen levels between 219 and 241 kg ha-1 provide the highest hydrocyanic acid contents, varying from 332 to 401 mg kg-1 of fresh matter in the evaluated tissues. Prolonging the evaluation time linearly reduces the hydrocyanic acid content in the tissues. Root skins accumulate the highest level of hydrocyanic acid, and the root pulp the lowest. At harvest, 360 days after planting, this cultivar is classified as sweet cassava.
publishDate 2012
dc.date.none.fl_str_mv 2012-11-29
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/12803
url https://seer.sct.embrapa.br/index.php/pab/article/view/12803
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/12803/8140
https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/12803/8523
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.47, n.10, out. 2012; 1436-1442
Pesquisa Agropecuária Brasileira; v.47, n.10, out. 2012; 1436-1442
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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