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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: |
LEADER 02557naa a2200229 a 4500
001 2020747
005 2023-05-18
008 2015 bl uuuu u00u1 u #d
022 $a0925-5214
100 1 $aPEREIRA, M. E. C.
245 $aDelayed and prolonged ethylene treatment alleviates firmness asynchrony enhanced by 1-methylcyclopropene exposure in Guatemalan-West Indian avocado.$h[electronic resource]
260 $c2015
520 $aStudies 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.
650 $aAvocados
650 $aPolygalacturonase
650 $aRipening
650 $aAbacate
650 $aMaturação
650 $aPersea Americana
700 1 $aSARGENT, S. A.
700 1 $aHUBER, DONALD J.
773 $tPostharvest Biology and Technology$gv.108, p. 54-60, 2015.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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Biblioteca |
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Origem |
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Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
06/01/1999 |
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Data da última atualização: |
22/01/2019 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
MOTA, A. M. da; COSTA, J. R. da; CAMPOS, M. A. A. |
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Afiliação: |
Embrapa Amazonia Ocidental; INPA.; JOANNE REGIS DA COSTA, CPAA. |
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Título: |
Diagnóstico de uma comunidade rural no Estado do Amazonas, Brasil. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO EM SISTEMAS AGROFLORESTAIS, 2., 1998, Belém, PA. Sistemas agroflorestais no contexto da qualidade ambiental e competitividade: resumos expandidos. Belém, PA: Embrapa-CPATU, 1998. |
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Páginas: |
p. 153-155. |
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Idioma: |
Português |
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Conteúdo: |
Estudos sobre as alternativas para a exploracao da terra precisam ser desenvolvidos com a participacao do produtor. Foram utilizados o pre-diagnosticos e diagnostico de uma comunidade rural de Iranduba (AM). De acordo com os resultados, pode-se concluir que os produtores utilizam praticas ofensivas ao meio ambiente, existindo uma tensao entre continuar com a agricultura tradicional ou buscar novas alternativas para gerar renda (madeira, turismo, agrofloresta entre outras). As restricoes tecnologicas dos pequenos produtores, afora outros fatores, contribuem para as limitacoes de produtividade nos terrenos. Portanto, faz-se necessario realizar uma capacitacao dos pequenos produtores em novas tecnologias (agrofloresta, cerca-viva, reflorestamento etc). |
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Palavras-Chave: |
Amazonas; Brasil; Manaus. |
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Thesagro: |
Pequeno Produtor; Sistema de Produção. |
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Thesaurus NAL: |
small farms; socioeconomics. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/189372/1/Id-3901-p.153-155-R634.9-C749s.pdf
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Marc: |
LEADER 01528nam a2200229 a 4500
001 1668029
005 2019-01-22
008 1998 bl uuuu u00u1 u #d
100 1 $aMOTA, A. M. da
245 $aDiagnóstico de uma comunidade rural no Estado do Amazonas, Brasil.
260 $aIn: CONGRESSO BRASILEIRO EM SISTEMAS AGROFLORESTAIS, 2., 1998, Belém, PA. Sistemas agroflorestais no contexto da qualidade ambiental e competitividade: resumos expandidos. Belém, PA: Embrapa-CPATU$c1998
300 $ap. 153-155.
520 $aEstudos sobre as alternativas para a exploracao da terra precisam ser desenvolvidos com a participacao do produtor. Foram utilizados o pre-diagnosticos e diagnostico de uma comunidade rural de Iranduba (AM). De acordo com os resultados, pode-se concluir que os produtores utilizam praticas ofensivas ao meio ambiente, existindo uma tensao entre continuar com a agricultura tradicional ou buscar novas alternativas para gerar renda (madeira, turismo, agrofloresta entre outras). As restricoes tecnologicas dos pequenos produtores, afora outros fatores, contribuem para as limitacoes de produtividade nos terrenos. Portanto, faz-se necessario realizar uma capacitacao dos pequenos produtores em novas tecnologias (agrofloresta, cerca-viva, reflorestamento etc).
650 $asmall farms
650 $asocioeconomics
650 $aPequeno Produtor
650 $aSistema de Produção
653 $aAmazonas
653 $aBrasil
653 $aManaus
700 1 $aCOSTA, J. R. da
700 1 $aCAMPOS, M. A. A.
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Embrapa Amazônia Ocidental (CPAA) |
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