Dormência tegumentar de sementes de baobá: Escarificação química
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Diversitas Journal |
Texto Completo: | https://diversitasjournal.com.br/diversitas_journal/article/view/1111 |
Resumo: | ABSTRACT: The baobab is a tree of multipurpose and biological properties; being its roots, tubers, twigs, fruits, seeds, leaves and edible flowers and used as common ingredients in traditional dishes in Africa. The objective of this study was to evaluate the chemical scarification with sulfuric acid and caustic soda to overcome the integumentary dormancy in baobab seeds. The design was completely randomized in a 2 x 4 + 1 factorial scheme (chemical scarification: sulfuric acid (H2SO4) and caustic soda (NaOH) x immersion times: 2; 4; 6 and 8 hours + untreated seeds (control)). The efficacy of the treatments was evaluated by the emergence, speed index and mean time of emergence, stem diameter, length and dry mass of shoot and root system of normal seedlings. The results showed that the chemical scarification with caustic soda and sulfuric acid for the periods of 2; 4; 6 and 8 hours caused the tegument rupture of the seeds, which contributed to increase the emergence of baobab seedlings, however, the emergence of seedlings of the seeds scarified with caustic soda for 2 hours did not differ from the values of the seedlings from the untreated seeds. Caustic soda and sulfuric acid were efficient in overcoming the integumentary dormancy of baobab seeds, however, caustic soda is more indicated because it is easy to acquire and low cost. KEYWORDS: Adansonia digitata, sulfuric acid, caustic soda, seedling development. |
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Dormência tegumentar de sementes de baobá: Escarificação química ABSTRACT: The baobab is a tree of multipurpose and biological properties; being its roots, tubers, twigs, fruits, seeds, leaves and edible flowers and used as common ingredients in traditional dishes in Africa. The objective of this study was to evaluate the chemical scarification with sulfuric acid and caustic soda to overcome the integumentary dormancy in baobab seeds. The design was completely randomized in a 2 x 4 + 1 factorial scheme (chemical scarification: sulfuric acid (H2SO4) and caustic soda (NaOH) x immersion times: 2; 4; 6 and 8 hours + untreated seeds (control)). The efficacy of the treatments was evaluated by the emergence, speed index and mean time of emergence, stem diameter, length and dry mass of shoot and root system of normal seedlings. The results showed that the chemical scarification with caustic soda and sulfuric acid for the periods of 2; 4; 6 and 8 hours caused the tegument rupture of the seeds, which contributed to increase the emergence of baobab seedlings, however, the emergence of seedlings of the seeds scarified with caustic soda for 2 hours did not differ from the values of the seedlings from the untreated seeds. Caustic soda and sulfuric acid were efficient in overcoming the integumentary dormancy of baobab seeds, however, caustic soda is more indicated because it is easy to acquire and low cost. KEYWORDS: Adansonia digitata, sulfuric acid, caustic soda, seedling development.RESUMO: O baobá é uma árvore de múltiplos propósitos e propriedades biológicas; sendo suas raízes, tubérculos, galhos, frutos, sementes, folhas e flores comestíveis e empregados como ingredientes comuns em pratos tradicionais na África. Objetivou-se avaliar a escarificação química com ácido sulfúrico e soda cáustica na superação da dormência tegumentar em sementes de baobá. O delineamento foi o inteiramente casualizado em esquema fatorial 2 x 4 + 1 (escarificação química: ácido sulfúrico (H2SO4) e soda cáustica (NaOH) x tempos de imersão: 2; 4; 6 e 8 horas + sementes não tratadas (controle)). A eficácia dos tratamentos foi avaliada por meio da emergência, índice de velocidade e tempo médio de emergência, diâmetro do coleto, comprimento e massa seca da parte aérea e do sistema radicular das plântulas normais. Os resultados mostraram que as escarificações químicas com soda cáustica e ácido sulfúrico pelos períodos de 2; 4; 6 e 8 horas causaram a ruptura do tegumento das sementes, o que contribuiu para aumentar a emergência de plântulas de baobá, contudo, a emergência das plântulas das sementes escarificadas com soda cáustica por 2 horas não diferiu dos valores das plântulas oriundas das sementes não tratadas. A soda cáustica e o ácido sulfúrico foram eficientes na superação da dormência tegumentar de sementes de baobá, contudo, a soda cáustica é mais indicada por ser de fácil aquisição e de baixo custo. PALAVRAS-CHAVE: Adansonia digitata, ácido sulfúrico, soda cáustica, desenvolvimento de plântulas.Universidade Estadual de Alagoas - Eduneal2020-04-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://diversitasjournal.com.br/diversitas_journal/article/view/111110.17648/diversitas-journal-v5i2-1111Diversitas Journal; v. 5 n. 2 (2020): A força feminina na consolidação da História; 718-7282525-521510.17648/diversitas-journal-v5i2reponame:Diversitas Journalinstname:Universidade Estadual de Alagoas (UNEAL)instacron:UNEALporhttps://diversitasjournal.com.br/diversitas_journal/article/view/1111/968Copyright (c) 2020 Ariana Veras de Araújo, Monalisa Alves Diniz da Silva, André Pereira Freire Ferraz, Ana Carla Vieira de Britohttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessAraújo, Ariana Veras deSilva, Monalisa Alves Diniz daFerraz, André Pereira FreireBrito, Ana Carla Vieira de2021-08-19T19:00:55Zoai:ojs.emnuvens.com.br:article/1111Revistahttps://diversitasjournal.com.br/diversitas_journal/indexPUBhttps://www.e-publicacoes.uerj.br/index.php/muralinternacional/oairevistadiversitasjournal@gmail.com2525-52152525-5215opendoar:2023-01-13T09:47:06.062724Diversitas Journal - Universidade Estadual de Alagoas (UNEAL)false |
dc.title.none.fl_str_mv |
Dormência tegumentar de sementes de baobá: Escarificação química |
title |
Dormência tegumentar de sementes de baobá: Escarificação química |
spellingShingle |
Dormência tegumentar de sementes de baobá: Escarificação química Araújo, Ariana Veras de |
title_short |
Dormência tegumentar de sementes de baobá: Escarificação química |
title_full |
Dormência tegumentar de sementes de baobá: Escarificação química |
title_fullStr |
Dormência tegumentar de sementes de baobá: Escarificação química |
title_full_unstemmed |
Dormência tegumentar de sementes de baobá: Escarificação química |
title_sort |
Dormência tegumentar de sementes de baobá: Escarificação química |
author |
Araújo, Ariana Veras de |
author_facet |
Araújo, Ariana Veras de Silva, Monalisa Alves Diniz da Ferraz, André Pereira Freire Brito, Ana Carla Vieira de |
author_role |
author |
author2 |
Silva, Monalisa Alves Diniz da Ferraz, André Pereira Freire Brito, Ana Carla Vieira de |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Araújo, Ariana Veras de Silva, Monalisa Alves Diniz da Ferraz, André Pereira Freire Brito, Ana Carla Vieira de |
description |
ABSTRACT: The baobab is a tree of multipurpose and biological properties; being its roots, tubers, twigs, fruits, seeds, leaves and edible flowers and used as common ingredients in traditional dishes in Africa. The objective of this study was to evaluate the chemical scarification with sulfuric acid and caustic soda to overcome the integumentary dormancy in baobab seeds. The design was completely randomized in a 2 x 4 + 1 factorial scheme (chemical scarification: sulfuric acid (H2SO4) and caustic soda (NaOH) x immersion times: 2; 4; 6 and 8 hours + untreated seeds (control)). The efficacy of the treatments was evaluated by the emergence, speed index and mean time of emergence, stem diameter, length and dry mass of shoot and root system of normal seedlings. The results showed that the chemical scarification with caustic soda and sulfuric acid for the periods of 2; 4; 6 and 8 hours caused the tegument rupture of the seeds, which contributed to increase the emergence of baobab seedlings, however, the emergence of seedlings of the seeds scarified with caustic soda for 2 hours did not differ from the values of the seedlings from the untreated seeds. Caustic soda and sulfuric acid were efficient in overcoming the integumentary dormancy of baobab seeds, however, caustic soda is more indicated because it is easy to acquire and low cost. KEYWORDS: Adansonia digitata, sulfuric acid, caustic soda, seedling development. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-04-06 |
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://diversitasjournal.com.br/diversitas_journal/article/view/1111 10.17648/diversitas-journal-v5i2-1111 |
url |
https://diversitasjournal.com.br/diversitas_journal/article/view/1111 |
identifier_str_mv |
10.17648/diversitas-journal-v5i2-1111 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://diversitasjournal.com.br/diversitas_journal/article/view/1111/968 |
dc.rights.driver.fl_str_mv |
https://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
https://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 |
Universidade Estadual de Alagoas - Eduneal |
publisher.none.fl_str_mv |
Universidade Estadual de Alagoas - Eduneal |
dc.source.none.fl_str_mv |
Diversitas Journal; v. 5 n. 2 (2020): A força feminina na consolidação da História; 718-728 2525-5215 10.17648/diversitas-journal-v5i2 reponame:Diversitas Journal instname:Universidade Estadual de Alagoas (UNEAL) instacron:UNEAL |
instname_str |
Universidade Estadual de Alagoas (UNEAL) |
instacron_str |
UNEAL |
institution |
UNEAL |
reponame_str |
Diversitas Journal |
collection |
Diversitas Journal |
repository.name.fl_str_mv |
Diversitas Journal - Universidade Estadual de Alagoas (UNEAL) |
repository.mail.fl_str_mv |
revistadiversitasjournal@gmail.com |
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1797051277004242944 |