Expected gain in selection of Pinus elliottii var. elliottii for timber production at an early age

Detalhes bibliográficos
Autor(a) principal: Moreira, Juliana Prado
Data de Publicação: 2014
Outros Autores: Shimizu, Jarbas Yukio, Sousa, Valderês Aparecida, Moraes, Mario Luis Teixeira de, Moura, Nara Fernandes, Aguiar, Ananda Virgínia de
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Florestal Brasileira (Online)
Texto Completo: https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/488
Resumo: P. elliotii var. elliottii is the second most planted fast growing tree species in Brazilian subtropics for wood and resin production. The objective of this work was to predict genetic values of fast growing individual trees. A trial was established in a randomized complete blocks design involving 76 treatments, 75 open pollinated progenies from a clonal seed orchard and a commercial progeny as control, in a 3 m x 3 m spacing. Total heights of all individuals were measured at 1, 2, and 3 years old and also stem diameter at 1.3 m height- dbh at 3 years old. Deviance analysis was performed by using Selegen-REML/BLUP software and genetic parameters were estimated. Significant variation was detected among progenies. Estimates of narrow-sense individual heritabilities were 0.25 and 0.42, respectively, for height and dbh. Some progenies grew faster than the control (commercial progeny) and the observed genetic variation was sufficiently high to encourage selection to obtain genetic gains in wood production.
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spelling Expected gain in selection of Pinus elliottii var. elliottii for timber production at an early ageGanho esperado na seleção de progênies de Pinus elliottii var. elliottii em idade precoce para produção de madeiraREML/BLUPCorrelaçõesDiversidade genéticaGanho de seleçãoMelhoramento genéticoREML/BLUPGenetic improvementGenetic diversityRepeatabilityHeritabilityP. elliotii var. elliottii is the second most planted fast growing tree species in Brazilian subtropics for wood and resin production. The objective of this work was to predict genetic values of fast growing individual trees. A trial was established in a randomized complete blocks design involving 76 treatments, 75 open pollinated progenies from a clonal seed orchard and a commercial progeny as control, in a 3 m x 3 m spacing. Total heights of all individuals were measured at 1, 2, and 3 years old and also stem diameter at 1.3 m height- dbh at 3 years old. Deviance analysis was performed by using Selegen-REML/BLUP software and genetic parameters were estimated. Significant variation was detected among progenies. Estimates of narrow-sense individual heritabilities were 0.25 and 0.42, respectively, for height and dbh. Some progenies grew faster than the control (commercial progeny) and the observed genetic variation was sufficiently high to encourage selection to obtain genetic gains in wood production.Pinus elliotti var. elliottii é a segunda espécie mais utilizada em reflorestamentos nas regiões subtropicais do Brasil, devida a sua boa performance na produção de madeira e resina. Assim, o objetivo do presente trabalho foi estimar os parâmetros genéticos e predizer os ganhos genéticos possíveis mediante seleções em idade precoce em progênies de P. elliottii para a produção de madeira. O experimento foi estabelecido no delineamento em blocos completos casualizados, com 76 tratamentos (75 progênies de um pomar de sementes clonal e um controle de plantio comercial), no espaçamento de 3 m x 3 m. A altura total foi avaliada no primeiro, segundo e terceiro anos após o plantio e o diâmetro a 1,30 m do solo (DAP) somente no terceiro ano após o plantio. O volume individual de madeira e o incremento médio anual foram calculados com base nesses caracteres. As análises de deviance e as estimativas dos parâmetros genéticos foram realizadas com o programa Selegen-REML/BLUP. Variação genética significativa foi detectada entre progênies. As herdabilidades individuais no sentido restrito foram de 0,25 e 0,42 em DAP e altura, respectivamente. Conclui-se que a variação genética é suficientemente alta para possibilitar ganhos genéticos mediante seleção dos indivíduos e progênies mais produtivos, visando à composição de pomares de sementes e plantios comerciais, tendo sido observado genótipos mais produtivos do que o plantio comercial.Embrapa Florestas2014-07-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/mswordhttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/48810.4336/2014.pfb.34.78.488Pesquisa Florestal Brasileira; v. 34 n. 78 (2014): abr./jun.; 99-109Pesquisa Florestal Brasileira; Vol. 34 No. 78 (2014): abr./jun.; 99-1091983-26051809-3647reponame:Pesquisa Florestal Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/488/360https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/488/1133Moreira, Juliana PradoShimizu, Jarbas YukioSousa, Valderês AparecidaMoraes, Mario Luis Teixeira deMoura, Nara FernandesAguiar, Ananda Virgínia deinfo:eu-repo/semantics/openAccess2017-04-28T12:48:18Zoai:pfb.cnpf.embrapa.br/pfb:article/488Revistahttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/PUBhttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/oaipfb@embrapa.br || revista.pfb@gmail.com || patricia.mattos@embrapa.br1983-26051809-3647opendoar:2017-04-28T12:48:18Pesquisa Florestal Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Expected gain in selection of Pinus elliottii var. elliottii for timber production at an early age
Ganho esperado na seleção de progênies de Pinus elliottii var. elliottii em idade precoce para produção de madeira
title Expected gain in selection of Pinus elliottii var. elliottii for timber production at an early age
spellingShingle Expected gain in selection of Pinus elliottii var. elliottii for timber production at an early age
Moreira, Juliana Prado
REML/BLUP
Correlações
Diversidade genética
Ganho de seleção
Melhoramento genético
REML/BLUP
Genetic improvement
Genetic diversity
Repeatability
Heritability
title_short Expected gain in selection of Pinus elliottii var. elliottii for timber production at an early age
title_full Expected gain in selection of Pinus elliottii var. elliottii for timber production at an early age
title_fullStr Expected gain in selection of Pinus elliottii var. elliottii for timber production at an early age
title_full_unstemmed Expected gain in selection of Pinus elliottii var. elliottii for timber production at an early age
title_sort Expected gain in selection of Pinus elliottii var. elliottii for timber production at an early age
author Moreira, Juliana Prado
author_facet Moreira, Juliana Prado
Shimizu, Jarbas Yukio
Sousa, Valderês Aparecida
Moraes, Mario Luis Teixeira de
Moura, Nara Fernandes
Aguiar, Ananda Virgínia de
author_role author
author2 Shimizu, Jarbas Yukio
Sousa, Valderês Aparecida
Moraes, Mario Luis Teixeira de
Moura, Nara Fernandes
Aguiar, Ananda Virgínia de
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Moreira, Juliana Prado
Shimizu, Jarbas Yukio
Sousa, Valderês Aparecida
Moraes, Mario Luis Teixeira de
Moura, Nara Fernandes
Aguiar, Ananda Virgínia de
dc.subject.por.fl_str_mv REML/BLUP
Correlações
Diversidade genética
Ganho de seleção
Melhoramento genético
REML/BLUP
Genetic improvement
Genetic diversity
Repeatability
Heritability
topic REML/BLUP
Correlações
Diversidade genética
Ganho de seleção
Melhoramento genético
REML/BLUP
Genetic improvement
Genetic diversity
Repeatability
Heritability
description P. elliotii var. elliottii is the second most planted fast growing tree species in Brazilian subtropics for wood and resin production. The objective of this work was to predict genetic values of fast growing individual trees. A trial was established in a randomized complete blocks design involving 76 treatments, 75 open pollinated progenies from a clonal seed orchard and a commercial progeny as control, in a 3 m x 3 m spacing. Total heights of all individuals were measured at 1, 2, and 3 years old and also stem diameter at 1.3 m height- dbh at 3 years old. Deviance analysis was performed by using Selegen-REML/BLUP software and genetic parameters were estimated. Significant variation was detected among progenies. Estimates of narrow-sense individual heritabilities were 0.25 and 0.42, respectively, for height and dbh. Some progenies grew faster than the control (commercial progeny) and the observed genetic variation was sufficiently high to encourage selection to obtain genetic gains in wood production.
publishDate 2014
dc.date.none.fl_str_mv 2014-07-07
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/488
10.4336/2014.pfb.34.78.488
url https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/488
identifier_str_mv 10.4336/2014.pfb.34.78.488
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/488/360
https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/488/1133
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/msword
dc.publisher.none.fl_str_mv Embrapa Florestas
publisher.none.fl_str_mv Embrapa Florestas
dc.source.none.fl_str_mv Pesquisa Florestal Brasileira; v. 34 n. 78 (2014): abr./jun.; 99-109
Pesquisa Florestal Brasileira; Vol. 34 No. 78 (2014): abr./jun.; 99-109
1983-2605
1809-3647
reponame:Pesquisa Florestal Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Florestal Brasileira (Online)
collection Pesquisa Florestal Brasileira (Online)
repository.name.fl_str_mv Pesquisa Florestal Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pfb@embrapa.br || revista.pfb@gmail.com || patricia.mattos@embrapa.br
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