Effects of metamitron under different relative humidity conditions on the fruit abscission of malus domestica borkh. Cultivars

Detalhes bibliográficos
Autor(a) principal: Rosa, Nídia
Data de Publicação: 2020
Outros Autores: Verjans, Wim, Àvila, Glória, Carbó, Joaquim, Bonany, Joan, Ramalho, José Cochicho, Asín, Luís, Oliveira, Cristina Moniz
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10362/121386
Resumo: UID/AGR/04129/2020 UIDB/00239/2020 UIDP/04035/2020
id RCAP_7ee50af7c5831cbf6cdaaa15dbe8ef75
oai_identifier_str oai:run.unl.pt:10362/121386
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling Effects of metamitron under different relative humidity conditions on the fruit abscission of malus domestica borkh. CultivarsAbsorptionCarbohydrate balancePhotosynthesisSorbitolSucroseThinningPlant ScienceHorticultureUID/AGR/04129/2020 UIDB/00239/2020 UIDP/04035/2020Metamitron is an apple (Malus domestica Borkh.) fruit thinner that acts by reducing the photosynthetic capacity of trees. Relative humidity may influence thinning efficacy; however, the broadness of this effect is not yet fully understood. Trials were set in Sint-Truiden (Belgium) in 2018 and Lleida and Girona (Spain) in 2019, using 4-year-old cvs. Braeburn and Elstar trees in Belgium, and 16-year-old cv. Golden Reinders trees in Spain. Four treatments were implemented at the stage of 12–14 mm fruit diameter: (a) CTR—control, trees under natural environmental conditions; (b) HH—high humidity, trees submitted to artificially increased air relative humidity applied for 3 h prior to the beginning of the experiment; (c) MET—trees sprayed with 247.5 mg/L metamitron; (d) MET + HH—trees submitted to the combination of increased humidity (HH) and metamitron (MET) application. In Belgium, metamitron absorption by leaves was greater than in Spain. This might be related to morphological characteristics of the leaves which developed under greater natural relative humidity levels in Belgium than in Spain. Compared to MET alone, ‘Braeburn’ and ‘Elstar’ demonstrated significantly greater metamitron absorption, 59% and 84%, respectively, under MET + HH, accompanied by declines in leaf net photosynthesis (10% and 32%, respectively) and sucrose (31% and 26%, respectively). At harvest, MET + HH treatment reduced yield by 24% and 32% in ‘Braeburn’ and ‘Elstar’, respectively, when compared with MET alone. A large reduction (considered over thinning) in the yield of ‘Elstar’ occurred. In contrast, metamitron absorption by ‘Golden Reinders’ using MET alone was similar to MET + HH; however, there was a slight foliar sugar reduction in the latter treatment. In addition, both treatments enhanced shoot growth and increased fruit abscission with similar improvements in fruit weight and size. In this study, high relative humidity enhanced fruit thinning efficacy under certain circumstances, such as age or genetic predisposal, which left the tree more susceptible to a negative carbohydrate balance. For instance, ‘Braeburn’ and ‘Elstar’ were easier to thin when compared to ‘Golden Reinders’. In addition, this study raises a question that requires further research regarding the impact of HH before and after spraying as well as its effect in combination with higher temperatures.GeoBioTec - Geobiociências, Geoengenharias e GeotecnologiasRUNRosa, NídiaVerjans, WimÀvila, GlóriaCarbó, JoaquimBonany, JoanRamalho, José CochichoAsín, LuísOliveira, Cristina Moniz2021-07-20T22:20:16Z2020-122020-12-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article15application/pdfhttp://hdl.handle.net/10362/121386eng2311-7524PURE: 32674037https://doi.org/10.3390/horticulturae6040089info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-03-11T05:03:42Zoai:run.unl.pt:10362/121386Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:44:35.887773Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Effects of metamitron under different relative humidity conditions on the fruit abscission of malus domestica borkh. Cultivars
title Effects of metamitron under different relative humidity conditions on the fruit abscission of malus domestica borkh. Cultivars
spellingShingle Effects of metamitron under different relative humidity conditions on the fruit abscission of malus domestica borkh. Cultivars
Rosa, Nídia
Absorption
Carbohydrate balance
Photosynthesis
Sorbitol
Sucrose
Thinning
Plant Science
Horticulture
title_short Effects of metamitron under different relative humidity conditions on the fruit abscission of malus domestica borkh. Cultivars
title_full Effects of metamitron under different relative humidity conditions on the fruit abscission of malus domestica borkh. Cultivars
title_fullStr Effects of metamitron under different relative humidity conditions on the fruit abscission of malus domestica borkh. Cultivars
title_full_unstemmed Effects of metamitron under different relative humidity conditions on the fruit abscission of malus domestica borkh. Cultivars
title_sort Effects of metamitron under different relative humidity conditions on the fruit abscission of malus domestica borkh. Cultivars
author Rosa, Nídia
author_facet Rosa, Nídia
Verjans, Wim
Àvila, Glória
Carbó, Joaquim
Bonany, Joan
Ramalho, José Cochicho
Asín, Luís
Oliveira, Cristina Moniz
author_role author
author2 Verjans, Wim
Àvila, Glória
Carbó, Joaquim
Bonany, Joan
Ramalho, José Cochicho
Asín, Luís
Oliveira, Cristina Moniz
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv GeoBioTec - Geobiociências, Geoengenharias e Geotecnologias
RUN
dc.contributor.author.fl_str_mv Rosa, Nídia
Verjans, Wim
Àvila, Glória
Carbó, Joaquim
Bonany, Joan
Ramalho, José Cochicho
Asín, Luís
Oliveira, Cristina Moniz
dc.subject.por.fl_str_mv Absorption
Carbohydrate balance
Photosynthesis
Sorbitol
Sucrose
Thinning
Plant Science
Horticulture
topic Absorption
Carbohydrate balance
Photosynthesis
Sorbitol
Sucrose
Thinning
Plant Science
Horticulture
description UID/AGR/04129/2020 UIDB/00239/2020 UIDP/04035/2020
publishDate 2020
dc.date.none.fl_str_mv 2020-12
2020-12-01T00:00:00Z
2021-07-20T22:20:16Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10362/121386
url http://hdl.handle.net/10362/121386
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 2311-7524
PURE: 32674037
https://doi.org/10.3390/horticulturae6040089
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 15
application/pdf
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
_version_ 1799138053324800000

Registros relacionados