Methods for overcoming dormancy in teak diaspores
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Pesquisa Agropecuária Tropical (Online) |
Texto Completo: | https://revistas.ufg.br/pat/article/view/49762 |
Resumo: | Teak has one of the most valuable woods in the world. However, one of the main limitations to produce seedlings of this species is related to its slow and irregular germination. This study aimed to evaluate methods for overcoming dormancy in teak diaspores, as well as their influence on seedling quality. The experimental design was completely randomized, with six treatments and four replications, totaling 24 experimental units. The evaluated treatments were: control; immersion in water for 12 h and sun exposure for 12 h, a process that was repeated three times; mechanical scarification for 5 seconds, using an electric emery; oven treatment at 80 ºC, for 6 h; impact test on diaspores at the heights of 10 cm and 20 cm. The following parameters were evaluated: emergence percentage at 29 days after sowing; percentage of normal seedlings; emergence speed index; emergence relative frequency; seedling fresh and dry weight and seedling length. The use of oven heating at 80 ºC, for 6 h, is the most efficient method to overcome dormancy in teak diaspores. The methods used did not affect the seedlings quality. |
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Methods for overcoming dormancy in teak diasporesMétodos de superação de dormência em diásporos de tecaTectona grandis L. f.mechanical scarificationseedsseedlings.Tectona grandis L. f.escarificação mecânicasementesplântulas.Teak has one of the most valuable woods in the world. However, one of the main limitations to produce seedlings of this species is related to its slow and irregular germination. This study aimed to evaluate methods for overcoming dormancy in teak diaspores, as well as their influence on seedling quality. The experimental design was completely randomized, with six treatments and four replications, totaling 24 experimental units. The evaluated treatments were: control; immersion in water for 12 h and sun exposure for 12 h, a process that was repeated three times; mechanical scarification for 5 seconds, using an electric emery; oven treatment at 80 ºC, for 6 h; impact test on diaspores at the heights of 10 cm and 20 cm. The following parameters were evaluated: emergence percentage at 29 days after sowing; percentage of normal seedlings; emergence speed index; emergence relative frequency; seedling fresh and dry weight and seedling length. The use of oven heating at 80 ºC, for 6 h, is the most efficient method to overcome dormancy in teak diaspores. The methods used did not affect the seedlings quality.Apesar de a teca possuir uma das madeiras mais valiosas do mundo, uma das principais limitações para a produção de mudas desta espécie é a germinação lenta e irregular. Objetivou-se avaliar métodos de superação da dormência em diásporos de teca e sua influência na qualidade das plântulas. O delineamento experimental adotado foi o inteiramente casualizado, com seis tratamentos e quatro repetições, totalizando 24 unidades experimentais. Os tratamentos avaliados foram os seguintes: testemunha; imersão em água por 12 h e exposição ao sol por 12 h, processo repetido três vezes; escarificação mecânica por 5 segundos com esmeril elétrico; estufa a 80 ºC por 6 h; teste de impacto sobre o diásporo à altura de 10 cm e 20 cm. Foram avaliados os parâmetros percentagem de emergência aos 29 dias após a semeadura; percentual de plântulas normais; índice de velocidade de emergência; frequência relativa de emergência; massa fresca e seca da plântula e comprimento da plântula. O aquecimento em estufa a 80 ºC, por 6 h, é o método mais eficiente para a superação de dormência em diásporos de teca. Os métodos utilizados não influenciaram na qualidade das plântulas.Escola de Agronomia - Universidade Federal de Goiás2017-12-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionAvaliado por paresapplication/pdfhttps://revistas.ufg.br/pat/article/view/49762Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 47, n. 4, Oct./Dec. 2017; 384-389Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 47, n. 4, out./dez. 2017; 384-389Pesquisa Agropecuária Tropical; v. 47, n. 4, out./dez. 2017; 384-3891983-4063reponame:Pesquisa Agropecuária Tropical (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGenghttps://revistas.ufg.br/pat/article/view/49762/24702Copyright (c) 2017 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics)info:eu-repo/semantics/openAccessde Sousa Soares, Guilherme OctávioCosta Leite, Rubson daDias da Silva Júnior, GersonSilva Reis, Amanda dade Sousa Soares, José LucasPereira Leite, Marcio Rogério2020-07-13T18:50:19Zoai:ojs.revistas.ufg.br:article/49762Revistahttps://revistas.ufg.br/patPUBhttps://revistas.ufg.br/pat/oaiaseleguini.pat@gmail.com||mgoes@agro.ufg.br1983-40631517-6398opendoar:2024-05-21T19:56:18.649975Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)true |
dc.title.none.fl_str_mv |
Methods for overcoming dormancy in teak diaspores Métodos de superação de dormência em diásporos de teca |
title |
Methods for overcoming dormancy in teak diaspores |
spellingShingle |
Methods for overcoming dormancy in teak diaspores de Sousa Soares, Guilherme Octávio Tectona grandis L. f. mechanical scarification seeds seedlings. Tectona grandis L. f. escarificação mecânica sementes plântulas. |
title_short |
Methods for overcoming dormancy in teak diaspores |
title_full |
Methods for overcoming dormancy in teak diaspores |
title_fullStr |
Methods for overcoming dormancy in teak diaspores |
title_full_unstemmed |
Methods for overcoming dormancy in teak diaspores |
title_sort |
Methods for overcoming dormancy in teak diaspores |
author |
de Sousa Soares, Guilherme Octávio |
author_facet |
de Sousa Soares, Guilherme Octávio Costa Leite, Rubson da Dias da Silva Júnior, Gerson Silva Reis, Amanda da de Sousa Soares, José Lucas Pereira Leite, Marcio Rogério |
author_role |
author |
author2 |
Costa Leite, Rubson da Dias da Silva Júnior, Gerson Silva Reis, Amanda da de Sousa Soares, José Lucas Pereira Leite, Marcio Rogério |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
de Sousa Soares, Guilherme Octávio Costa Leite, Rubson da Dias da Silva Júnior, Gerson Silva Reis, Amanda da de Sousa Soares, José Lucas Pereira Leite, Marcio Rogério |
dc.subject.por.fl_str_mv |
Tectona grandis L. f. mechanical scarification seeds seedlings. Tectona grandis L. f. escarificação mecânica sementes plântulas. |
topic |
Tectona grandis L. f. mechanical scarification seeds seedlings. Tectona grandis L. f. escarificação mecânica sementes plântulas. |
description |
Teak has one of the most valuable woods in the world. However, one of the main limitations to produce seedlings of this species is related to its slow and irregular germination. This study aimed to evaluate methods for overcoming dormancy in teak diaspores, as well as their influence on seedling quality. The experimental design was completely randomized, with six treatments and four replications, totaling 24 experimental units. The evaluated treatments were: control; immersion in water for 12 h and sun exposure for 12 h, a process that was repeated three times; mechanical scarification for 5 seconds, using an electric emery; oven treatment at 80 ºC, for 6 h; impact test on diaspores at the heights of 10 cm and 20 cm. The following parameters were evaluated: emergence percentage at 29 days after sowing; percentage of normal seedlings; emergence speed index; emergence relative frequency; seedling fresh and dry weight and seedling length. The use of oven heating at 80 ºC, for 6 h, is the most efficient method to overcome dormancy in teak diaspores. The methods used did not affect the seedlings quality. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-12-06 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Avaliado por pares |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://revistas.ufg.br/pat/article/view/49762 |
url |
https://revistas.ufg.br/pat/article/view/49762 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://revistas.ufg.br/pat/article/view/49762/24702 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2017 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics) info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2017 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics) |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Escola de Agronomia - Universidade Federal de Goiás |
publisher.none.fl_str_mv |
Escola de Agronomia - Universidade Federal de Goiás |
dc.source.none.fl_str_mv |
Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 47, n. 4, Oct./Dec. 2017; 384-389 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 47, n. 4, out./dez. 2017; 384-389 Pesquisa Agropecuária Tropical; v. 47, n. 4, out./dez. 2017; 384-389 1983-4063 reponame:Pesquisa Agropecuária Tropical (Online) instname:Universidade Federal de Goiás (UFG) instacron:UFG |
instname_str |
Universidade Federal de Goiás (UFG) |
instacron_str |
UFG |
institution |
UFG |
reponame_str |
Pesquisa Agropecuária Tropical (Online) |
collection |
Pesquisa Agropecuária Tropical (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG) |
repository.mail.fl_str_mv |
aseleguini.pat@gmail.com||mgoes@agro.ufg.br |
_version_ |
1799874819873832960 |