The effect of leaf area to crop weight ratios on fruit quality and performance of grapevine (Vitis vinifera cv. Pinot Noir)
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Tipo de documento: | Dissertação |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.5/8635 |
Resumo: | Mestrado Vinifera EuroMaster - Instituto Superior de Agronomia |
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The effect of leaf area to crop weight ratios on fruit quality and performance of grapevine (Vitis vinifera cv. Pinot Noir)vitis viniferaPinot Noirleaf areafruit qualityMestrado Vinifera EuroMaster - Instituto Superior de AgronomiaVine performance, fruit and wine composition were investigated on field grown Pinot Noir grapevines subjected to a range of leaf removal and cluster thinning treatments. Both treatments were applied in three levels (25 %, 50 % and 100 % of leaves and clusters retained, respectively) at the phenological stage of pea-size. New emerging leaves were removed as they appeared. Veraison was delayed when leaf area to fruit weight ratio (LA/Y) dropped below a certain threshold (13 cm2 g-1). On the contrary a high LA/Y ratio (> 26 cm2g-1) did not show any difference on fruit colouration. No significant differences in single leaf photosynthetic rate were observed between the treatments, however, there was a trend that vines from the 50 % leaf retained treatment tended to exhibit highest values for stomatal conductance and photosynthesis. Defoliated vines compensated for a restricted leaf area by increasing individual leaf size of the remaining leaves.The results of the present study suggest that fruit is produced at the expense of vegetative growth. High crop levels resulted in a decrease of individual leaf size. Moreover, pruning weight and LA/Y ratio were positively correlated. Sugar accumulation in grape berries were shown to follow a saturation curve. An increase of the source to sink ratio up to a certain point was accompanied by an increase in sugar accumulation. If this threshold was exceeded, additional leaf area did not promote higher sugar accumulation, indicating that the vine might be sink-limited. The most severe defoliation treatment significantly reduced berry size and berry weight. No consistent pattern between titratable acidity, pH and YAN and leaf area to fruit weight ratio could be found. Wine tannin content and wine colour parameters were not affected by the treatmentsISA/ULCreasy, GlenLopes, Carlos Manuel AntunesRepositório da Universidade de LisboaPasch, Ludwig Anselm2017-12-31T01:30:10Z20142014-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10400.5/8635engPasch, L.A. - The effect of leaf area to crop weight ratios on fruit quality and performance of grapevine (Vitis vinifera cv. Pinot Noir). Lisboa: ISA, 2014, 103 p.info: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:RCAAP2023-12-24T01:32:24Zoai:www.repository.utl.pt:10400.5/8635Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:55:35.830191Repositório 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 |
The effect of leaf area to crop weight ratios on fruit quality and performance of grapevine (Vitis vinifera cv. Pinot Noir) |
title |
The effect of leaf area to crop weight ratios on fruit quality and performance of grapevine (Vitis vinifera cv. Pinot Noir) |
spellingShingle |
The effect of leaf area to crop weight ratios on fruit quality and performance of grapevine (Vitis vinifera cv. Pinot Noir) Pasch, Ludwig Anselm vitis vinifera Pinot Noir leaf area fruit quality |
title_short |
The effect of leaf area to crop weight ratios on fruit quality and performance of grapevine (Vitis vinifera cv. Pinot Noir) |
title_full |
The effect of leaf area to crop weight ratios on fruit quality and performance of grapevine (Vitis vinifera cv. Pinot Noir) |
title_fullStr |
The effect of leaf area to crop weight ratios on fruit quality and performance of grapevine (Vitis vinifera cv. Pinot Noir) |
title_full_unstemmed |
The effect of leaf area to crop weight ratios on fruit quality and performance of grapevine (Vitis vinifera cv. Pinot Noir) |
title_sort |
The effect of leaf area to crop weight ratios on fruit quality and performance of grapevine (Vitis vinifera cv. Pinot Noir) |
author |
Pasch, Ludwig Anselm |
author_facet |
Pasch, Ludwig Anselm |
author_role |
author |
dc.contributor.none.fl_str_mv |
Creasy, Glen Lopes, Carlos Manuel Antunes Repositório da Universidade de Lisboa |
dc.contributor.author.fl_str_mv |
Pasch, Ludwig Anselm |
dc.subject.por.fl_str_mv |
vitis vinifera Pinot Noir leaf area fruit quality |
topic |
vitis vinifera Pinot Noir leaf area fruit quality |
description |
Mestrado Vinifera EuroMaster - Instituto Superior de Agronomia |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014 2014-01-01T00:00:00Z 2017-12-31T01:30:10Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.5/8635 |
url |
http://hdl.handle.net/10400.5/8635 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Pasch, L.A. - The effect of leaf area to crop weight ratios on fruit quality and performance of grapevine (Vitis vinifera cv. Pinot Noir). Lisboa: ISA, 2014, 103 p. |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
ISA/UL |
publisher.none.fl_str_mv |
ISA/UL |
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 |
|
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1799131035825340416 |