Treatment of carrot seeds with growth regulators

Detalhes bibliográficos
Autor(a) principal: Bevilaqua, Gilberto Antonio Peripolli
Data de Publicação: 1998
Outros Autores: Peske, Silmar Teichert, dos Santos Filho, Benedito Gomes, Santos, Dora Sueli Barbosa dos
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/4960
Resumo: The objectives of this study were to evaluate the treatment of carrot seeds (Daucus carota L.), cv. Brasília, with growth regulators on the seedling vigor and metabolic changes in the seeds. Three growth regulators were used: gibberellic acid (AG3), kinetin and ethrel. The conditioning was made at 25oC and the seeds were dried at environmental conditions at 12% seed moisture. Germination, first count of germination, seed chemical composition, alfa-amilase activity and chlorophyl a+b in the plants were evaluated in laboratory. Emergence and speed emergence index, dry matter weight and height of the seedlings were evaluated in greenhouse. The AG3 and ethrel accelerate the seed metabolism and increase the emergence and speed of emergence; the ethrel and kinetin cross out the increase of the seedlings height caused by AG3; the kinetin causes little effect on the vigor of the seeds, but affects highly the seed metabolism; and the growth regulators accelerate the seed metabolism in higher proportion that the vigor.
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spelling Treatment of carrot seeds with growth regulatorsEfeito do tratamento de sementes de cenoura com reguladores de crescimentoDaucus carota; gibberellic acid; ethrel; kinetin; vigor; metabolismDaucus carota; ácido giberélico; etrel; cinetina; vigor; metabolismoThe objectives of this study were to evaluate the treatment of carrot seeds (Daucus carota L.), cv. Brasília, with growth regulators on the seedling vigor and metabolic changes in the seeds. Three growth regulators were used: gibberellic acid (AG3), kinetin and ethrel. The conditioning was made at 25oC and the seeds were dried at environmental conditions at 12% seed moisture. Germination, first count of germination, seed chemical composition, alfa-amilase activity and chlorophyl a+b in the plants were evaluated in laboratory. Emergence and speed emergence index, dry matter weight and height of the seedlings were evaluated in greenhouse. The AG3 and ethrel accelerate the seed metabolism and increase the emergence and speed of emergence; the ethrel and kinetin cross out the increase of the seedlings height caused by AG3; the kinetin causes little effect on the vigor of the seeds, but affects highly the seed metabolism; and the growth regulators accelerate the seed metabolism in higher proportion that the vigor.Os objetivos do trabalho foram avaliar o efeito do tratamento de sementes de cenoura (Daucus carota L.), cv. Brasília, com reguladores de crescimento no vigor das plântulas e as alterações metabólicas decorrentes dos tratamentos. Os reguladores utilizados foram ácido giberélico (AG3), etrel e cinetina. O condicionamento foi realizado à temperatura de 25oC e a secagem das sementes em ar ambiente até 12% de umidade. Os parâmetros avaliados em laboratório foram percentagem e primeira contagem de germinação, composição química das sementes, atividade da enzima alfa-amilase e teores de clorofila a+b nas folhas. Em casa de vegetação foram avaliadas a percentagem e velocidade de emergência, peso da matéria seca de raiz e parte aérea, comprimento de raiz e parte aérea. O delineamento experimental foi o de blocos casualizados, com três repetições. O AG3 e o etrel afetam o metabolismo das sementes e aumentam a percentagem e velocidade de emergência das plântulas; o etrel e a cinetina anulam o efeito ocasionado pelo AG3 sobre o aumento do comprimento das plântulas; a cinetina afeta pouco o vigor das sementes, mas significativamente o metabolismo na germinação; e os reguladores de crescimento aceleram o metabolismo das sementes em maior proporção que o vigor.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraBevilaqua, Gilberto Antonio PeripolliPeske, Silmar Teichertdos Santos Filho, Benedito GomesSantos, Dora Sueli Barbosa dos1998-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/4960Pesquisa Agropecuaria Brasileira; v.33, n.8, ago. 1998; 1271-1280Pesquisa Agropecuária Brasileira; v.33, n.8, ago. 1998; 1271-12801678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/4960/7098info:eu-repo/semantics/openAccess2015-01-05T19:40:47Zoai:ojs.seer.sct.embrapa.br:article/4960Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2015-01-05T19:40:47Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Treatment of carrot seeds with growth regulators
Efeito do tratamento de sementes de cenoura com reguladores de crescimento
title Treatment of carrot seeds with growth regulators
spellingShingle Treatment of carrot seeds with growth regulators
Bevilaqua, Gilberto Antonio Peripolli
Daucus carota; gibberellic acid; ethrel; kinetin; vigor; metabolism
Daucus carota; ácido giberélico; etrel; cinetina; vigor; metabolismo
title_short Treatment of carrot seeds with growth regulators
title_full Treatment of carrot seeds with growth regulators
title_fullStr Treatment of carrot seeds with growth regulators
title_full_unstemmed Treatment of carrot seeds with growth regulators
title_sort Treatment of carrot seeds with growth regulators
author Bevilaqua, Gilberto Antonio Peripolli
author_facet Bevilaqua, Gilberto Antonio Peripolli
Peske, Silmar Teichert
dos Santos Filho, Benedito Gomes
Santos, Dora Sueli Barbosa dos
author_role author
author2 Peske, Silmar Teichert
dos Santos Filho, Benedito Gomes
Santos, Dora Sueli Barbosa dos
author2_role author
author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Bevilaqua, Gilberto Antonio Peripolli
Peske, Silmar Teichert
dos Santos Filho, Benedito Gomes
Santos, Dora Sueli Barbosa dos
dc.subject.por.fl_str_mv Daucus carota; gibberellic acid; ethrel; kinetin; vigor; metabolism
Daucus carota; ácido giberélico; etrel; cinetina; vigor; metabolismo
topic Daucus carota; gibberellic acid; ethrel; kinetin; vigor; metabolism
Daucus carota; ácido giberélico; etrel; cinetina; vigor; metabolismo
description The objectives of this study were to evaluate the treatment of carrot seeds (Daucus carota L.), cv. Brasília, with growth regulators on the seedling vigor and metabolic changes in the seeds. Three growth regulators were used: gibberellic acid (AG3), kinetin and ethrel. The conditioning was made at 25oC and the seeds were dried at environmental conditions at 12% seed moisture. Germination, first count of germination, seed chemical composition, alfa-amilase activity and chlorophyl a+b in the plants were evaluated in laboratory. Emergence and speed emergence index, dry matter weight and height of the seedlings were evaluated in greenhouse. The AG3 and ethrel accelerate the seed metabolism and increase the emergence and speed of emergence; the ethrel and kinetin cross out the increase of the seedlings height caused by AG3; the kinetin causes little effect on the vigor of the seeds, but affects highly the seed metabolism; and the growth regulators accelerate the seed metabolism in higher proportion that the vigor.
publishDate 1998
dc.date.none.fl_str_mv 1998-08-01
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/4960
url https://seer.sct.embrapa.br/index.php/pab/article/view/4960
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/4960/7098
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.33, n.8, ago. 1998; 1271-1280
Pesquisa Agropecuária Brasileira; v.33, n.8, ago. 1998; 1271-1280
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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