Exposure to Direct Sunlight during the Growing Season Delays Postharvest Softening of ‘Williams’ Pears and Improves Their Response to 1-Methylcyclopropene

Autores
Raffo Benegas, Maria Dolores; Sanchez, Enrique Eduardo; Sozzi, Gabriel Oscar
Año de publicación
2008
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Trabajo presentado al X International Pear Symposium, Peniche (Portugal), mayo de 2007
An experiment was performed on pears cv. Williams/seedling rootstock to evaluate the effect of intercepted PAR on fruit firmness and color, upon harvest and subsequent response to postharvest application of 1-methylcyclopropene (1-MCP). Four treatments were applied 30 days after full bloom, each treatment covering the harvest on 4 trees: (T1) sun pears (fruit located in the outer canopy, fully exposed to sunlight); (T2) +UV pears (a polyester film cover, with high transmittance over the UV waveband, was placed on top of the northern side of the canopy); (T3) –UV pears (a polyester film cover, which cuts off all UV radiation below 310 nm, was applied on top of the northern side of the canopy); (T4) shaded pears (fruit located in the inner canopy, a low radiation zone). Data loggers were placed on random fruits to measure temperature over the growing season. At harvest, 75 pears per treatment were picked and firmness and color were measured on 25 randomly selected fruit. The remaining 50 pears were split in two equal batches, one of them being exposed to 400 µl L-1 1-MCP. 1-MCP-treated and untreated fruit were stored at 18°C for 23 and 13 days respectively. At harvest, sun pears, +UV pears and –UV pears were firmer than shaded pears. Also, sun pears showed higher firmness values after 13 days. Response to 1-MCP was significantly different (P<0.05) between treatments. After a 23-day storage, 1-MCP-treated sun pears showed the highest firmness (36 N), followed by +UV and –UV pears (17 N) and shaded pears (7 N). L, C and h° values (fruit color) were the highest in shaded pears, while fruit fully exposed to sunlight showed the lowest values. Fruit response variability to the various postharvest treatments is a major problem for the fresh-fruit industry nowadays. According to our results, the different preharvest light and/or temperature exposures may be a possible reason for the variability of the response to 1-MCP treatments.
EEA Alto Valle
Fil: Raffo Benegas, María Dolores. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Alto Valle; Argentina
Fil: Sánchez, Enrique Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Alto Valle; Argentina
Fil: Sozzi, Gabriel Oscar. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
Fil: Sozzi, Gabriel Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fuente
Acta Horticulturae 800 : 1035-1040 (2008)
Materia
Pyrus communis
Radiación
Color
Radiation
Colour
Pears
Daylight
Pera
Luz del Día
Fruit Firmness
Preharvest Conditions
1-Methylcyclopropene
Firmeza del Fruto
Condiciones Precoseha
1-MCP
1-Metilciclopropeno
Nivel de accesibilidad
acceso restringido
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/23414

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oai_identifier_str oai:localhost:20.500.12123/23414
network_acronym_str INTADig
repository_id_str l
network_name_str INTA Digital (INTA)
spelling Exposure to Direct Sunlight during the Growing Season Delays Postharvest Softening of ‘Williams’ Pears and Improves Their Response to 1-MethylcyclopropeneRaffo Benegas, Maria DoloresSanchez, Enrique EduardoSozzi, Gabriel OscarPyrus communisRadiaciónColorRadiationColourPearsDaylightPeraLuz del DíaFruit FirmnessPreharvest Conditions1-MethylcyclopropeneFirmeza del FrutoCondiciones Precoseha1-MCP1-MetilciclopropenoTrabajo presentado al X International Pear Symposium, Peniche (Portugal), mayo de 2007An experiment was performed on pears cv. Williams/seedling rootstock to evaluate the effect of intercepted PAR on fruit firmness and color, upon harvest and subsequent response to postharvest application of 1-methylcyclopropene (1-MCP). Four treatments were applied 30 days after full bloom, each treatment covering the harvest on 4 trees: (T1) sun pears (fruit located in the outer canopy, fully exposed to sunlight); (T2) +UV pears (a polyester film cover, with high transmittance over the UV waveband, was placed on top of the northern side of the canopy); (T3) –UV pears (a polyester film cover, which cuts off all UV radiation below 310 nm, was applied on top of the northern side of the canopy); (T4) shaded pears (fruit located in the inner canopy, a low radiation zone). Data loggers were placed on random fruits to measure temperature over the growing season. At harvest, 75 pears per treatment were picked and firmness and color were measured on 25 randomly selected fruit. The remaining 50 pears were split in two equal batches, one of them being exposed to 400 µl L-1 1-MCP. 1-MCP-treated and untreated fruit were stored at 18°C for 23 and 13 days respectively. At harvest, sun pears, +UV pears and –UV pears were firmer than shaded pears. Also, sun pears showed higher firmness values after 13 days. Response to 1-MCP was significantly different (P<0.05) between treatments. After a 23-day storage, 1-MCP-treated sun pears showed the highest firmness (36 N), followed by +UV and –UV pears (17 N) and shaded pears (7 N). L, C and h° values (fruit color) were the highest in shaded pears, while fruit fully exposed to sunlight showed the lowest values. Fruit response variability to the various postharvest treatments is a major problem for the fresh-fruit industry nowadays. According to our results, the different preharvest light and/or temperature exposures may be a possible reason for the variability of the response to 1-MCP treatments.EEA Alto ValleFil: Raffo Benegas, María Dolores. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Alto Valle; ArgentinaFil: Sánchez, Enrique Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Alto Valle; ArgentinaFil: Sozzi, Gabriel Oscar. Universidad de Buenos Aires. Facultad de Agronomía; ArgentinaFil: Sozzi, Gabriel Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaInternational Society for Horticultural Science (ISHS)2025-08-12T14:25:39Z2025-08-12T14:25:39Z2008-10-31info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/23414https://www.actahort.org/books/800/800_141.htm978-90-66056-11-40567-7572 (impreso)2406-6168 (electrónico)https://doi.org/10.17660/ActaHortic.2008.800.141Acta Horticulturae 800 : 1035-1040 (2008)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/restrictedAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2025-09-29T13:47:28Zoai:localhost:20.500.12123/23414instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-29 13:47:28.477INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Exposure to Direct Sunlight during the Growing Season Delays Postharvest Softening of ‘Williams’ Pears and Improves Their Response to 1-Methylcyclopropene
title Exposure to Direct Sunlight during the Growing Season Delays Postharvest Softening of ‘Williams’ Pears and Improves Their Response to 1-Methylcyclopropene
spellingShingle Exposure to Direct Sunlight during the Growing Season Delays Postharvest Softening of ‘Williams’ Pears and Improves Their Response to 1-Methylcyclopropene
Raffo Benegas, Maria Dolores
Pyrus communis
Radiación
Color
Radiation
Colour
Pears
Daylight
Pera
Luz del Día
Fruit Firmness
Preharvest Conditions
1-Methylcyclopropene
Firmeza del Fruto
Condiciones Precoseha
1-MCP
1-Metilciclopropeno
title_short Exposure to Direct Sunlight during the Growing Season Delays Postharvest Softening of ‘Williams’ Pears and Improves Their Response to 1-Methylcyclopropene
title_full Exposure to Direct Sunlight during the Growing Season Delays Postharvest Softening of ‘Williams’ Pears and Improves Their Response to 1-Methylcyclopropene
title_fullStr Exposure to Direct Sunlight during the Growing Season Delays Postharvest Softening of ‘Williams’ Pears and Improves Their Response to 1-Methylcyclopropene
title_full_unstemmed Exposure to Direct Sunlight during the Growing Season Delays Postharvest Softening of ‘Williams’ Pears and Improves Their Response to 1-Methylcyclopropene
title_sort Exposure to Direct Sunlight during the Growing Season Delays Postharvest Softening of ‘Williams’ Pears and Improves Their Response to 1-Methylcyclopropene
dc.creator.none.fl_str_mv Raffo Benegas, Maria Dolores
Sanchez, Enrique Eduardo
Sozzi, Gabriel Oscar
author Raffo Benegas, Maria Dolores
author_facet Raffo Benegas, Maria Dolores
Sanchez, Enrique Eduardo
Sozzi, Gabriel Oscar
author_role author
author2 Sanchez, Enrique Eduardo
Sozzi, Gabriel Oscar
author2_role author
author
dc.subject.none.fl_str_mv Pyrus communis
Radiación
Color
Radiation
Colour
Pears
Daylight
Pera
Luz del Día
Fruit Firmness
Preharvest Conditions
1-Methylcyclopropene
Firmeza del Fruto
Condiciones Precoseha
1-MCP
1-Metilciclopropeno
topic Pyrus communis
Radiación
Color
Radiation
Colour
Pears
Daylight
Pera
Luz del Día
Fruit Firmness
Preharvest Conditions
1-Methylcyclopropene
Firmeza del Fruto
Condiciones Precoseha
1-MCP
1-Metilciclopropeno
dc.description.none.fl_txt_mv Trabajo presentado al X International Pear Symposium, Peniche (Portugal), mayo de 2007
An experiment was performed on pears cv. Williams/seedling rootstock to evaluate the effect of intercepted PAR on fruit firmness and color, upon harvest and subsequent response to postharvest application of 1-methylcyclopropene (1-MCP). Four treatments were applied 30 days after full bloom, each treatment covering the harvest on 4 trees: (T1) sun pears (fruit located in the outer canopy, fully exposed to sunlight); (T2) +UV pears (a polyester film cover, with high transmittance over the UV waveband, was placed on top of the northern side of the canopy); (T3) –UV pears (a polyester film cover, which cuts off all UV radiation below 310 nm, was applied on top of the northern side of the canopy); (T4) shaded pears (fruit located in the inner canopy, a low radiation zone). Data loggers were placed on random fruits to measure temperature over the growing season. At harvest, 75 pears per treatment were picked and firmness and color were measured on 25 randomly selected fruit. The remaining 50 pears were split in two equal batches, one of them being exposed to 400 µl L-1 1-MCP. 1-MCP-treated and untreated fruit were stored at 18°C for 23 and 13 days respectively. At harvest, sun pears, +UV pears and –UV pears were firmer than shaded pears. Also, sun pears showed higher firmness values after 13 days. Response to 1-MCP was significantly different (P<0.05) between treatments. After a 23-day storage, 1-MCP-treated sun pears showed the highest firmness (36 N), followed by +UV and –UV pears (17 N) and shaded pears (7 N). L, C and h° values (fruit color) were the highest in shaded pears, while fruit fully exposed to sunlight showed the lowest values. Fruit response variability to the various postharvest treatments is a major problem for the fresh-fruit industry nowadays. According to our results, the different preharvest light and/or temperature exposures may be a possible reason for the variability of the response to 1-MCP treatments.
EEA Alto Valle
Fil: Raffo Benegas, María Dolores. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Alto Valle; Argentina
Fil: Sánchez, Enrique Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Alto Valle; Argentina
Fil: Sozzi, Gabriel Oscar. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
Fil: Sozzi, Gabriel Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description Trabajo presentado al X International Pear Symposium, Peniche (Portugal), mayo de 2007
publishDate 2008
dc.date.none.fl_str_mv 2008-10-31
2025-08-12T14:25:39Z
2025-08-12T14:25:39Z
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12123/23414
https://www.actahort.org/books/800/800_141.htm
978-90-66056-11-4
0567-7572 (impreso)
2406-6168 (electrónico)
https://doi.org/10.17660/ActaHortic.2008.800.141
url http://hdl.handle.net/20.500.12123/23414
https://www.actahort.org/books/800/800_141.htm
https://doi.org/10.17660/ActaHortic.2008.800.141
identifier_str_mv 978-90-66056-11-4
0567-7572 (impreso)
2406-6168 (electrónico)
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/restrictedAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv restrictedAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv International Society for Horticultural Science (ISHS)
publisher.none.fl_str_mv International Society for Horticultural Science (ISHS)
dc.source.none.fl_str_mv Acta Horticulturae 800 : 1035-1040 (2008)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
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