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 | Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
29/07/2015 |
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Data da última atualização: |
18/05/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PEREIRA, M. E. C.; SARGENT, S. A.; HUBER, DONALD J. |
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Afiliação: |
MARCIO EDUARDO CANTO PEREIRA, CNPMF; STEVEN A. SARGENT, University of Florida; DONALD J. HUBER, University of Florida. |
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Título: |
Delayed and prolonged ethylene treatment alleviates firmness asynchrony enhanced by 1-methylcyclopropene exposure in Guatemalan-West Indian avocado. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Postharvest Biology and Technology, v.108, p. 54-60, 2015. |
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ISSN: |
0925-5214 |
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Idioma: |
Inglês |
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Conteúdo: |
Studies were conducted to determine the efficacy of a delayed and prolonged ethylene treatment in alleviating firmness asynchrony enhanced by 1-methylcyclopropene (1-MCP) exposure in avocado. ?Booth 7? and ?Booth 8? avocados, mid-season cultivars in Florida, were harvested and immersed in water (control) or aqueous 1-MCP at 16.7 mmol L 1 a.i. (900 mg L 1) for 1 min at 20 C; all fruit were held at 20 C/89 2% relative humidity until ripe, based on whole fruit firmness, respiration and ethylene evolution. The effect of delayed and prolonged ethylene treatment was investigated by exposing 1-MCP-treated fruit to ethylene (100 mL L 1) for 2 or 4 d at 20 C upon reaching two progressive ripening stages (120 N or 80 N of whole fruit firmness, respectively). Ripe fruit (10?15 N) from all treatments were assessed for peel color, pulp firmness and polygalacturonase (PG) activity. 1-MCP significantly delayed ripening of ?Booth 7? and ?Booth 8? avocado. Firmness asynchrony was confirmed in control fruit of both cultivars, with a difference of more than 20% in pulp firmness between apical and distal end segments regardless of ripeness stage.1-MCP-treated fruit showed pronounced firmness asynchrony, with pulp firmness for apical end 10-fold higher than for distal end. PG activity was not directly related to firmness asynchrony, since even when strong asynchrony was observed for 1-MCP-treated fruit, PG activity did not differ from control. A 2-d delayed exposure of fruit at either 120 N or 80 N whole fruit firmness to ethylene was not consistently sufficient to promote ripening recovery (in terms of whole fruit firmness). However, a prolonged, 4-d ethylene treatment of fruit at either progressive ripening stages from both ?Booth 7? and ?Booth 8? effectively overcame the pronounced firmness asynchrony caused by 1-MCP treatment. MenosStudies were conducted to determine the efficacy of a delayed and prolonged ethylene treatment in alleviating firmness asynchrony enhanced by 1-methylcyclopropene (1-MCP) exposure in avocado. ?Booth 7? and ?Booth 8? avocados, mid-season cultivars in Florida, were harvested and immersed in water (control) or aqueous 1-MCP at 16.7 mmol L 1 a.i. (900 mg L 1) for 1 min at 20 C; all fruit were held at 20 C/89 2% relative humidity until ripe, based on whole fruit firmness, respiration and ethylene evolution. The effect of delayed and prolonged ethylene treatment was investigated by exposing 1-MCP-treated fruit to ethylene (100 mL L 1) for 2 or 4 d at 20 C upon reaching two progressive ripening stages (120 N or 80 N of whole fruit firmness, respectively). Ripe fruit (10?15 N) from all treatments were assessed for peel color, pulp firmness and polygalacturonase (PG) activity. 1-MCP significantly delayed ripening of ?Booth 7? and ?Booth 8? avocado. Firmness asynchrony was confirmed in control fruit of both cultivars, with a difference of more than 20% in pulp firmness between apical and distal end segments regardless of ripeness stage.1-MCP-treated fruit showed pronounced firmness asynchrony, with pulp firmness for apical end 10-fold higher than for distal end. PG activity was not directly related to firmness asynchrony, since even when strong asynchrony was observed for 1-MCP-treated fruit, PG activity did not differ from control. A 2-d delayed exposure of fruit at either 120 N or 8... Mostrar Tudo |
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Thesagro: |
Abacate; Maturação; Persea Americana. |
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Thesaurus Nal: |
Avocados; Polygalacturonase; Ripening. |
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Categoria do assunto: |
-- |
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Marc: |
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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| 7. |  | CANETTI, A.; GARRASTAZU, M. C.; MATTOS, P. P. de; BRAZ, E. M.; PÉLLICO NETTO, S. Supressão dos maciços florestais no município de Araucária, PR entre os anos de 2005 e 2012. In: SIMPÓSIO NACIONAL DE INVENTÁRIO FLORESTAL, 3., 2014, Manaus. Anais... Brasília, DF: Serviço Florestal Brasileiro, 2014. p. 60. Disponível online. Resumo.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| 9. | | CURTO, R.; MATTOS, P. P. de; BRAZ, E. M.; PELLICO NETTO, S.; ZACHOW, R. Longitudinal and radial variation of the wood density in an unmanaged stand of Araucaria angustifolia. The International Forestry Review, v. 16, n. 5, p. 406, 2014. Edição dos abstracts do 24º IUFRO World Congress, 2014, Salt Lake City. Sustaining forests, sustaining people: the role of research.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| 11. | | CURTO, R. De A.; MATTOS, P. P. de; BRAZ, E. M.; ZACHOW, R.; PÉLLICO NETTO, S. Efeito da falta de manejo no crescimento de Araucaria angustifolia (Bert.) O. Ktze. In: CONGRESSO FLORESTAL DE MATO GROSSO, 1.; SIMPÓSIO DE PÓS-GRADUAÇÃO EM CIÊNCIAS AMBIENTAIS E FLORESTAIS, 5.; SEMANA ACADÊMICA DE ENGENHARIA FLORESTAL - UFMT/Sinop, 5., 2015, Sinop. Anais. Sinop: UFMT, 2015. 1 p. Disponível online. Resumo. Seção: Manejo florestal.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| 12. | | CURTO, R. DE A.; MATTOS, P. P. de; PÉLLICO NETTO, S. Equações de volume para povoamento não manejado de Araucaria angustifolia. In: EVENTO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA FLORESTAS, 12., 2013, Colombo. Anais. Colombo: Embrapa Florestas, 2013. (Embrapa Florestas. Documentos, 253). Editores técnicos: Marcílio José Thomazini, Elenice Fritzsons, Patrícia Raquel Silva, Guilherme Schnell e Schuhli, Denise Jeton Cardoso, Luziane Franciscon. EVINCI. Resumos.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| 18. | | CURTO, R. de A.; ZACHOW, R.; BRAZ, E. M.; MATTOS, P. P. de; PÉLLICO NETTO, S. Alternativas para o manejo de povoamentos superestocados de Araucaria angustifolia na Floresta Nacional de Açungui. In: SEMINÁRIO DE PESQUISAS DA FLORESTA NACIONAL DE TRÊS BARRAS, 2., 2015, Três Barras. Anais... Colombo: Embrapa Florestas, 2015. p. 113-115. (Embrapa Florestas. Documentos, 279). Resumo.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| 19. | | CURTO, R. De A.; MATTOS, P. P. de; BRAZ, E. M.; ZACHOW, R.; PÉLLICO NETTO, S. A datação cruzada como ferramenta essencial para a detecção de anéis de crescimento ausentes em árvores sob competição. In: SIMPÓSIO NACIONAL DE INVENTÁRIO FLORESTAL, 3., 2014, Manaus. Anais... Brasília, DF: Serviço Florestal Brasileiro, 2014. p. 23. Disponível online. Resumo.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| Registros recuperados : 31 | |
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