Physiological quality of tomato seeds treated with polymers in combination with paclobutrazol
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/30255 |
Resumo: | In tomatoes production system, etiolation is the main cause of seedlings loss. Some inhibitors, such as paclobutrazol (PBZ), have been used to reduce this problem. This study aimed to evaluate the effect of different doses of paclobutrazol, with and without polymer association, at different degrees of permeability, on the physiological quality of seeds. Seeds of two tomato cultivars, Ozone and Paronset, were treated with four concentrations of paclobutrazol (0, 0.004, 0.008 and 0.016 g mL a.i.10 g seeds-1), and combined with three fixatives (water, P1 and P2). After the treatments, germination test, germination speed index test and cold test were carried out, and after five months of seed storage, the analyzes were repeated. The increase in PBZ dose reduces both germination percentage and germination speed index. After storage, the product acts differently on seed germination. The synthetic polymers, in the dose used in this study, are effective in PBZ fixation on the seeds coat, but do not reduce the harmful effect of PBZ on seed germination. |
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Physiological quality of tomato seeds treated with polymers in combination with paclobutrazolQualidade fisiológica de sementes de tomate tratadas com paclobutrazol em associação com polímerosTomateiro - EstiolamentoGerminação de sementesTomatoes - EtiolationSeed germinationIn tomatoes production system, etiolation is the main cause of seedlings loss. Some inhibitors, such as paclobutrazol (PBZ), have been used to reduce this problem. This study aimed to evaluate the effect of different doses of paclobutrazol, with and without polymer association, at different degrees of permeability, on the physiological quality of seeds. Seeds of two tomato cultivars, Ozone and Paronset, were treated with four concentrations of paclobutrazol (0, 0.004, 0.008 and 0.016 g mL a.i.10 g seeds-1), and combined with three fixatives (water, P1 and P2). After the treatments, germination test, germination speed index test and cold test were carried out, and after five months of seed storage, the analyzes were repeated. The increase in PBZ dose reduces both germination percentage and germination speed index. After storage, the product acts differently on seed germination. The synthetic polymers, in the dose used in this study, are effective in PBZ fixation on the seeds coat, but do not reduce the harmful effect of PBZ on seed germination.No sistema de produção de tomates, o estiolamento é a principal causa de perdas de mudas. Alguns inibidores, como o paclobutrazol (PBZ), têm sido utilizados para reduzir esse problema. No presente trabalho, objetivou-se avaliar o efeito de diferentes doses de paclobutrazol com e sem associação de polímeros com diferentes graus de permeabilidade, sobre a qualidade fisiológica das sementes. Foram utilizadas sementes de duas cultivares de tomate, Ozone e Paronset, tratadas com quatro doses de paclobutrazol (0; 0,004; 0,008 e 0,016 mL i.a. 10g sementes-1), combinadas com três fixadores (água; P1 e P2). Após o tratamento, foram efetuados os teste de germinação, índice de velocidade de germinação e teste frio, e após cinco meses de armazenamento das sementes as análises foram repetidas. O aumento na dose de PBZ reduz a porcentagem de germinação e o índice de velocidade de germinação. Após o armazenamento, o produto atua de forma diferente na porcentagem de germinação das sementes. Os polímeros sintéticos na dosagem utilizada são eficientes na fixação do PBZ no tegumento das sementes, mas não reduzem o efeito prejudicial do PBZ na germinação das sementes.Associação Brasileira de Tecnologia de Sementes2018-08-30T13:22:56Z2018-08-30T13:22:56Z2017-10info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfREZENDE, E. M. de et al. Physiological quality of tomato seeds treated with polymers in combination with paclobutrazol. Journal of Seed Science, Londrina, v. 39, n. 4, p. 338-343, Oct./Dec. 2017.http://repositorio.ufla.br/jspui/handle/1/30255Journal of Seed Sciencereponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessRezende, Édila Maria deOliveira, João AlmirCarvalho, Everson ReisClemente, Aline da Consolação SampaioOliveira, Gustavo Evangelistaeng2018-08-30T13:22:57Zoai:localhost:1/30255Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2018-08-30T13:22:57Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Physiological quality of tomato seeds treated with polymers in combination with paclobutrazol Qualidade fisiológica de sementes de tomate tratadas com paclobutrazol em associação com polímeros |
title |
Physiological quality of tomato seeds treated with polymers in combination with paclobutrazol |
spellingShingle |
Physiological quality of tomato seeds treated with polymers in combination with paclobutrazol Rezende, Édila Maria de Tomateiro - Estiolamento Germinação de sementes Tomatoes - Etiolation Seed germination |
title_short |
Physiological quality of tomato seeds treated with polymers in combination with paclobutrazol |
title_full |
Physiological quality of tomato seeds treated with polymers in combination with paclobutrazol |
title_fullStr |
Physiological quality of tomato seeds treated with polymers in combination with paclobutrazol |
title_full_unstemmed |
Physiological quality of tomato seeds treated with polymers in combination with paclobutrazol |
title_sort |
Physiological quality of tomato seeds treated with polymers in combination with paclobutrazol |
author |
Rezende, Édila Maria de |
author_facet |
Rezende, Édila Maria de Oliveira, João Almir Carvalho, Everson Reis Clemente, Aline da Consolação Sampaio Oliveira, Gustavo Evangelista |
author_role |
author |
author2 |
Oliveira, João Almir Carvalho, Everson Reis Clemente, Aline da Consolação Sampaio Oliveira, Gustavo Evangelista |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Rezende, Édila Maria de Oliveira, João Almir Carvalho, Everson Reis Clemente, Aline da Consolação Sampaio Oliveira, Gustavo Evangelista |
dc.subject.por.fl_str_mv |
Tomateiro - Estiolamento Germinação de sementes Tomatoes - Etiolation Seed germination |
topic |
Tomateiro - Estiolamento Germinação de sementes Tomatoes - Etiolation Seed germination |
description |
In tomatoes production system, etiolation is the main cause of seedlings loss. Some inhibitors, such as paclobutrazol (PBZ), have been used to reduce this problem. This study aimed to evaluate the effect of different doses of paclobutrazol, with and without polymer association, at different degrees of permeability, on the physiological quality of seeds. Seeds of two tomato cultivars, Ozone and Paronset, were treated with four concentrations of paclobutrazol (0, 0.004, 0.008 and 0.016 g mL a.i.10 g seeds-1), and combined with three fixatives (water, P1 and P2). After the treatments, germination test, germination speed index test and cold test were carried out, and after five months of seed storage, the analyzes were repeated. The increase in PBZ dose reduces both germination percentage and germination speed index. After storage, the product acts differently on seed germination. The synthetic polymers, in the dose used in this study, are effective in PBZ fixation on the seeds coat, but do not reduce the harmful effect of PBZ on seed germination. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-10 2018-08-30T13:22:56Z 2018-08-30T13:22:56Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
REZENDE, E. M. de et al. Physiological quality of tomato seeds treated with polymers in combination with paclobutrazol. Journal of Seed Science, Londrina, v. 39, n. 4, p. 338-343, Oct./Dec. 2017. http://repositorio.ufla.br/jspui/handle/1/30255 |
identifier_str_mv |
REZENDE, E. M. de et al. Physiological quality of tomato seeds treated with polymers in combination with paclobutrazol. Journal of Seed Science, Londrina, v. 39, n. 4, p. 338-343, Oct./Dec. 2017. |
url |
http://repositorio.ufla.br/jspui/handle/1/30255 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by/4.0/ |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Associação Brasileira de Tecnologia de Sementes |
publisher.none.fl_str_mv |
Associação Brasileira de Tecnologia de Sementes |
dc.source.none.fl_str_mv |
Journal of Seed Science reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Repositório Institucional da UFLA |
collection |
Repositório Institucional da UFLA |
repository.name.fl_str_mv |
Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
_version_ |
1807835093249556480 |