Age trends in genetic parameters of wood density components in 46 half-sibling families of Pinus pinaster
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.5/5520 |
Resumo: | This study contributes to the Pinus pinaster Ait. breeding programme, which is reaching the third generation by adding information on wood quality of 46 open-pollinated families from a progeny trial located in Leiria, Portugal, that originated from seed collected in a clonal seed orchard. A total of 552 seventeen-year-old trees were sampled at 2 m height. Trends were studied from the pith outward in variance components and narrow-sense heritability (h2) of wood density components and ring-width characteristics as well as genetic correlations between cambial ages. Mean ring density (RD), minimum density (MND), maximum density (MXD), earlywood density (EWD), latewood density (LWD), earlywood width, latewood width, ring width, latewood percentage, and heterogeneity index were determined using X-ray densitometry procedures. RD had higher genetic control (h2 = 0.63), and heritability values of earlywood components (h2 MND = 0.54, h2 EWD = 0.60) exceeded those of latewood components (h2 MXD = 0.34, h2 LWD = 0.26). Heritabilities increased with ring number from pith for almost all wood density components, and there were high age–age genetic correlations for wood density traits (rg > 0.98). |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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7160 |
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Age trends in genetic parameters of wood density components in 46 half-sibling families of Pinus pinasterPinus pinasteragewood densitygenetic parametersThis study contributes to the Pinus pinaster Ait. breeding programme, which is reaching the third generation by adding information on wood quality of 46 open-pollinated families from a progeny trial located in Leiria, Portugal, that originated from seed collected in a clonal seed orchard. A total of 552 seventeen-year-old trees were sampled at 2 m height. Trends were studied from the pith outward in variance components and narrow-sense heritability (h2) of wood density components and ring-width characteristics as well as genetic correlations between cambial ages. Mean ring density (RD), minimum density (MND), maximum density (MXD), earlywood density (EWD), latewood density (LWD), earlywood width, latewood width, ring width, latewood percentage, and heterogeneity index were determined using X-ray densitometry procedures. RD had higher genetic control (h2 = 0.63), and heritability values of earlywood components (h2 MND = 0.54, h2 EWD = 0.60) exceeded those of latewood components (h2 MXD = 0.34, h2 LWD = 0.26). Heritabilities increased with ring number from pith for almost all wood density components, and there were high age–age genetic correlations for wood density traits (rg > 0.98).NRCRepositório da Universidade de LisboaGaspar, Maria JoãoLouzada, José LuísSilva, Maria EmiliaAguiar, AlexandreAlmeida, Maria Helena2013-05-29T10:42:20Z20082008-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.5/5520eng"Canadian Journal of Forest Research". ISSN 0045-5067. 38 (2008) 1470-14770045-5067info: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:RCAAP2023-03-06T14:36:27Zoai:www.repository.utl.pt:10400.5/5520Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:53:03.585508Repositório 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 |
Age trends in genetic parameters of wood density components in 46 half-sibling families of Pinus pinaster |
title |
Age trends in genetic parameters of wood density components in 46 half-sibling families of Pinus pinaster |
spellingShingle |
Age trends in genetic parameters of wood density components in 46 half-sibling families of Pinus pinaster Gaspar, Maria João Pinus pinaster age wood density genetic parameters |
title_short |
Age trends in genetic parameters of wood density components in 46 half-sibling families of Pinus pinaster |
title_full |
Age trends in genetic parameters of wood density components in 46 half-sibling families of Pinus pinaster |
title_fullStr |
Age trends in genetic parameters of wood density components in 46 half-sibling families of Pinus pinaster |
title_full_unstemmed |
Age trends in genetic parameters of wood density components in 46 half-sibling families of Pinus pinaster |
title_sort |
Age trends in genetic parameters of wood density components in 46 half-sibling families of Pinus pinaster |
author |
Gaspar, Maria João |
author_facet |
Gaspar, Maria João Louzada, José Luís Silva, Maria Emilia Aguiar, Alexandre Almeida, Maria Helena |
author_role |
author |
author2 |
Louzada, José Luís Silva, Maria Emilia Aguiar, Alexandre Almeida, Maria Helena |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Repositório da Universidade de Lisboa |
dc.contributor.author.fl_str_mv |
Gaspar, Maria João Louzada, José Luís Silva, Maria Emilia Aguiar, Alexandre Almeida, Maria Helena |
dc.subject.por.fl_str_mv |
Pinus pinaster age wood density genetic parameters |
topic |
Pinus pinaster age wood density genetic parameters |
description |
This study contributes to the Pinus pinaster Ait. breeding programme, which is reaching the third generation by adding information on wood quality of 46 open-pollinated families from a progeny trial located in Leiria, Portugal, that originated from seed collected in a clonal seed orchard. A total of 552 seventeen-year-old trees were sampled at 2 m height. Trends were studied from the pith outward in variance components and narrow-sense heritability (h2) of wood density components and ring-width characteristics as well as genetic correlations between cambial ages. Mean ring density (RD), minimum density (MND), maximum density (MXD), earlywood density (EWD), latewood density (LWD), earlywood width, latewood width, ring width, latewood percentage, and heterogeneity index were determined using X-ray densitometry procedures. RD had higher genetic control (h2 = 0.63), and heritability values of earlywood components (h2 MND = 0.54, h2 EWD = 0.60) exceeded those of latewood components (h2 MXD = 0.34, h2 LWD = 0.26). Heritabilities increased with ring number from pith for almost all wood density components, and there were high age–age genetic correlations for wood density traits (rg > 0.98). |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008 2008-01-01T00:00:00Z 2013-05-29T10:42:20Z |
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/10400.5/5520 |
url |
http://hdl.handle.net/10400.5/5520 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
"Canadian Journal of Forest Research". ISSN 0045-5067. 38 (2008) 1470-1477 0045-5067 |
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 |
NRC |
publisher.none.fl_str_mv |
NRC |
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_ |
1799131006193631232 |