Genetic divergence among progenies of Pinus caribaea var. caribaea under quantitative characters
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , |
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/194 |
Resumo: | The objective of this research was to quantify the genetic dissimilarity among P.caribaea var. caribaea progenies to identify divergent parents aiming to generate highly productive genotypes and to evaluate the total variability by phenotypic characters of commercial importance. The progeny trial of P. caribaea var. caribaea was set up through 10 x 10 triple lattice design, with 99 progenies and a commercial control in Selvíria, MS, Brazil. We have evaluated quantitative characters before and after thinning procedures such as: total plant height (m), diameter at breast height (dbh) (cm); wood volume (m3 tree-1), stem form, wood density at dbh and wood density at the middle of the total height of tree stem (g cm-3), and survival of progenies (%). There was low genetic divergence among P. caribaea var. caribaea progenies. The diameter at breast height was the character that most contributes to genetic diversity among progenies, for both before and after thinning. The information of Mahalanobis distance and the clustering of progenies by Tocher's method will be important to define the future strategies for breeding programs and genetic conservation of the species. doi: 10.4336/2012.pfb.32.69.69 |
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Genetic divergence among progenies of Pinus caribaea var. caribaea under quantitative charactersDivergência genética entre progênies de Pinus caribaea var. caribaea com base em caracteres quantitativosGenetic parametersGenetic divergenceTropical pinesProgeny trialParâmetros genéticosDivergência genéticaPinheiros tropicaisTeste de progêniesThe objective of this research was to quantify the genetic dissimilarity among P.caribaea var. caribaea progenies to identify divergent parents aiming to generate highly productive genotypes and to evaluate the total variability by phenotypic characters of commercial importance. The progeny trial of P. caribaea var. caribaea was set up through 10 x 10 triple lattice design, with 99 progenies and a commercial control in Selvíria, MS, Brazil. We have evaluated quantitative characters before and after thinning procedures such as: total plant height (m), diameter at breast height (dbh) (cm); wood volume (m3 tree-1), stem form, wood density at dbh and wood density at the middle of the total height of tree stem (g cm-3), and survival of progenies (%). There was low genetic divergence among P. caribaea var. caribaea progenies. The diameter at breast height was the character that most contributes to genetic diversity among progenies, for both before and after thinning. The information of Mahalanobis distance and the clustering of progenies by Tocher's method will be important to define the future strategies for breeding programs and genetic conservation of the species. doi: 10.4336/2012.pfb.32.69.69O objetivo desse trabalho foi quantificar a dissimilaridade genética entre progênies de P. caribaea var. caribaea para identificar genitores divergentes, visando gerar genótipos mais produtivos e avaliar a variabilidade total por meio de alguns caracteres fenotípicos de importância comercial. Assim, um teste de progênies de P. caribaea var. caribaea foi implantado em delineamento experimental látice 10 x 10 triplo, com 99 progênies e uma testemunha comercial em Selvíria, MS. Foram avaliados os caracteres quantitativos antes e após desbaste aos 14 anos, tais como: altura total de plantas (m), diâmetro à altura do peito - DAP (cm); volume (m3 árvore-1); forma do fuste das árvores, densidade básica da madeira, na altura do DAP - DBM-1, e na metade da altura da árvore - DBM-2 (g cm-3); e sobrevivência das progênies (%). Houve baixa divergência genética entre as progênies de P. caribaea var. caribaea. O DAP foi o caráter que mais contribuiu para a divergência genética entre as progênies, tanto antes quanto depois do desbaste. As informações geradas com base na distância generalizada de Mahalanobis e o agrupamento das progênies pelo método de Tocher serão usadas para definir as estratégias a serem adotadas em futuros programas de melhoramento e conservação genética desta espécie. doi: 10.4336/2012.pfb.32.69.69Embrapa Florestas2012-03-21info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/194Pesquisa Florestal Brasileira; v. 32 n. 69 (2012): jan./mar.; 69Pesquisa Florestal Brasileira; Vol. 32 No. 69 (2012): jan./mar.; 691983-26051809-3647reponame:Pesquisa Florestal Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/194/248Silva, Janete Motta daAguiar, Ananda Virgínia deMori, Edson SeizoMoraes, Mario Luiz Teixeira deinfo:eu-repo/semantics/openAccess2017-04-28T12:57:12Zoai:pfb.cnpf.embrapa.br/pfb:article/194Revistahttps://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:2017-04-28T12:57:12Pesquisa Florestal Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Genetic divergence among progenies of Pinus caribaea var. caribaea under quantitative characters Divergência genética entre progênies de Pinus caribaea var. caribaea com base em caracteres quantitativos |
title |
Genetic divergence among progenies of Pinus caribaea var. caribaea under quantitative characters |
spellingShingle |
Genetic divergence among progenies of Pinus caribaea var. caribaea under quantitative characters Silva, Janete Motta da Genetic parameters Genetic divergence Tropical pines Progeny trial Parâmetros genéticos Divergência genética Pinheiros tropicais Teste de progênies |
title_short |
Genetic divergence among progenies of Pinus caribaea var. caribaea under quantitative characters |
title_full |
Genetic divergence among progenies of Pinus caribaea var. caribaea under quantitative characters |
title_fullStr |
Genetic divergence among progenies of Pinus caribaea var. caribaea under quantitative characters |
title_full_unstemmed |
Genetic divergence among progenies of Pinus caribaea var. caribaea under quantitative characters |
title_sort |
Genetic divergence among progenies of Pinus caribaea var. caribaea under quantitative characters |
author |
Silva, Janete Motta da |
author_facet |
Silva, Janete Motta da Aguiar, Ananda Virgínia de Mori, Edson Seizo Moraes, Mario Luiz Teixeira de |
author_role |
author |
author2 |
Aguiar, Ananda Virgínia de Mori, Edson Seizo Moraes, Mario Luiz Teixeira de |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Silva, Janete Motta da Aguiar, Ananda Virgínia de Mori, Edson Seizo Moraes, Mario Luiz Teixeira de |
dc.subject.por.fl_str_mv |
Genetic parameters Genetic divergence Tropical pines Progeny trial Parâmetros genéticos Divergência genética Pinheiros tropicais Teste de progênies |
topic |
Genetic parameters Genetic divergence Tropical pines Progeny trial Parâmetros genéticos Divergência genética Pinheiros tropicais Teste de progênies |
description |
The objective of this research was to quantify the genetic dissimilarity among P.caribaea var. caribaea progenies to identify divergent parents aiming to generate highly productive genotypes and to evaluate the total variability by phenotypic characters of commercial importance. The progeny trial of P. caribaea var. caribaea was set up through 10 x 10 triple lattice design, with 99 progenies and a commercial control in Selvíria, MS, Brazil. We have evaluated quantitative characters before and after thinning procedures such as: total plant height (m), diameter at breast height (dbh) (cm); wood volume (m3 tree-1), stem form, wood density at dbh and wood density at the middle of the total height of tree stem (g cm-3), and survival of progenies (%). There was low genetic divergence among P. caribaea var. caribaea progenies. The diameter at breast height was the character that most contributes to genetic diversity among progenies, for both before and after thinning. The information of Mahalanobis distance and the clustering of progenies by Tocher's method will be important to define the future strategies for breeding programs and genetic conservation of the species. doi: 10.4336/2012.pfb.32.69.69 |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-03-21 |
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/194 |
url |
https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/194 |
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/194/248 |
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 |
Embrapa Florestas |
publisher.none.fl_str_mv |
Embrapa Florestas |
dc.source.none.fl_str_mv |
Pesquisa Florestal Brasileira; v. 32 n. 69 (2012): jan./mar.; 69 Pesquisa Florestal Brasileira; Vol. 32 No. 69 (2012): jan./mar.; 69 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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1783370932564262912 |