Characters of Pennisetum spp. used for the initial selection in the genetic improvement program for elephant grass
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng por |
Título da fonte: | Semina. Ciências Agrárias (Online) |
Texto Completo: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/18188 |
Resumo: | The present study was carried out at the Experimental Station of the Agronomical Institute of Pernambuco (IPA) in Itambé-PE to analyse different characters for the initial selection of Pennisetum spp. clones based on the coefficient of repeatability and the number of measurements required to predict their genotypic values (with a coefficient of determination R2 = 0.80). Considering the high number of genotypes in Phase I of the genetic improvement program and the requirement to reduce this number before progression to Phase II, it is relevant to identify characters with high genotypic values, which are easy to measure or acquire and that can be used in the initial selection. Therefore, we chose to evaluate the coefficient of repeatability and the number of measurements necessary to predict the genotypic values of 23 characters, either morphological or productive, of 472 Pennisetum spp. clones, in non-repeated plots. The coefficient of repeatability was estimated using the components of the analysis of variance (ANOVA). Dry matter concentration, leaf blade colour, midrib colour, leaf sheath colour, and internode colour were less affected by environmental conditions, and it was possible to predict their genotypic values (R2 = 0.80) with a maximum of four measurements, indicating that these characters are predictable and reliable for initial selection of Pennisetum spp. |
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Semina. Ciências Agrárias (Online) |
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Characters of Pennisetum spp. used for the initial selection in the genetic improvement program for elephant grassCaracteres de Pennisetum spp. para seleção inicial no programa de melhoramento genético do capim-elefanteClonesMorphological descriptorsHybridsMilletsRepeatabilityDry matter content.ClonesDescritores morfológicosHíbridosMilhetoRepetibilidadeTeor de matéria seca.5.04.04.04-0 Melhoramento de Plantas Forrageiras e Produção de SementesThe present study was carried out at the Experimental Station of the Agronomical Institute of Pernambuco (IPA) in Itambé-PE to analyse different characters for the initial selection of Pennisetum spp. clones based on the coefficient of repeatability and the number of measurements required to predict their genotypic values (with a coefficient of determination R2 = 0.80). Considering the high number of genotypes in Phase I of the genetic improvement program and the requirement to reduce this number before progression to Phase II, it is relevant to identify characters with high genotypic values, which are easy to measure or acquire and that can be used in the initial selection. Therefore, we chose to evaluate the coefficient of repeatability and the number of measurements necessary to predict the genotypic values of 23 characters, either morphological or productive, of 472 Pennisetum spp. clones, in non-repeated plots. The coefficient of repeatability was estimated using the components of the analysis of variance (ANOVA). Dry matter concentration, leaf blade colour, midrib colour, leaf sheath colour, and internode colour were less affected by environmental conditions, and it was possible to predict their genotypic values (R2 = 0.80) with a maximum of four measurements, indicating that these characters are predictable and reliable for initial selection of Pennisetum spp.O trabalho foi conduzido na Estação Experimental do Instituto Agronômico de Pernambuco (IPA), em Itambé-PE, objetivando analisar diferentes caracteres na seleção inicial de clones de Pennisetum sp. com base no coeficiente de repetibilidade e no número de medidas necessário para predição de seu valor genotípico ( = 0,80). Diante do elevado número de genótipos na Fase I do programa de melhoramento e da necessidade de se reduzir quando se progride para a Fase II, é relevante a identificação de caracteres de alto valor genotípico e de fácil mensuração ou obtenção para seleção inicial. Assim, optou-se em avaliar o coeficiente de repetibilidade e no número de medidas necessário para predição do valor genotípico de 23 caracteres, entre morfológicos e produtivos, de 472 clones de Pennisetum spp. em parcelas não repetidas. A repetibilidade foi estimada por meio dos componentes da análise de variância. Teor de matéria seca, cor da lâmina foliar, cor da nervura foliar central, cor da bainha e cor do entrenó foram menos influenciados pelas condições ambientais, sendo possível predizer o valor genotípico ( =0,80) dos mesmos com no máximo quatro medidas. É possível predizer o valor genotípico dos caracteres teor de matéria seca, cor da lâmina foliar, cor da nervura foliar central, cor da bainha e cor do entrenó com apenas quatro avaliações, classificando-os como de alta facilidade de predição e confiáveis na seleção inicial de Pennisetum spp.UEL2016-08-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa científicaapplication/pdfapplication/vnd.openxmlformats-officedocument.wordprocessingml.documentimage/pjpeghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/1818810.5433/1679-0359.2016v37n4p2035Semina: Ciências Agrárias; Vol. 37 No. 4 (2016); 2035-2042Semina: Ciências Agrárias; v. 37 n. 4 (2016); 2035-20421679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELengporhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/18188/19640https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/18188/34278https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/18188/37817Silva, Maria ConceiçãoSantos, Mércia Virginia Ferreira dosLira, Mário de AndradeMello, Alexandre Carneiro Leão deDubeux Jr., José Carlos BatistaFerreira, Rinaldo Luiz CaracioloMelo, Wellington Samay deCarvalho, Luiz Felipe Pereira Borbainfo:eu-repo/semantics/openAccess2016-09-02T15:07:18Zoai:ojs.pkp.sfu.ca:article/18188Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2016-09-02T15:07:18Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Characters of Pennisetum spp. used for the initial selection in the genetic improvement program for elephant grass Caracteres de Pennisetum spp. para seleção inicial no programa de melhoramento genético do capim-elefante |
title |
Characters of Pennisetum spp. used for the initial selection in the genetic improvement program for elephant grass |
spellingShingle |
Characters of Pennisetum spp. used for the initial selection in the genetic improvement program for elephant grass Silva, Maria Conceição Clones Morphological descriptors Hybrids Millets Repeatability Dry matter content. Clones Descritores morfológicos Híbridos Milheto Repetibilidade Teor de matéria seca. 5.04.04.04-0 Melhoramento de Plantas Forrageiras e Produção de Sementes |
title_short |
Characters of Pennisetum spp. used for the initial selection in the genetic improvement program for elephant grass |
title_full |
Characters of Pennisetum spp. used for the initial selection in the genetic improvement program for elephant grass |
title_fullStr |
Characters of Pennisetum spp. used for the initial selection in the genetic improvement program for elephant grass |
title_full_unstemmed |
Characters of Pennisetum spp. used for the initial selection in the genetic improvement program for elephant grass |
title_sort |
Characters of Pennisetum spp. used for the initial selection in the genetic improvement program for elephant grass |
author |
Silva, Maria Conceição |
author_facet |
Silva, Maria Conceição Santos, Mércia Virginia Ferreira dos Lira, Mário de Andrade Mello, Alexandre Carneiro Leão de Dubeux Jr., José Carlos Batista Ferreira, Rinaldo Luiz Caraciolo Melo, Wellington Samay de Carvalho, Luiz Felipe Pereira Borba |
author_role |
author |
author2 |
Santos, Mércia Virginia Ferreira dos Lira, Mário de Andrade Mello, Alexandre Carneiro Leão de Dubeux Jr., José Carlos Batista Ferreira, Rinaldo Luiz Caraciolo Melo, Wellington Samay de Carvalho, Luiz Felipe Pereira Borba |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Silva, Maria Conceição Santos, Mércia Virginia Ferreira dos Lira, Mário de Andrade Mello, Alexandre Carneiro Leão de Dubeux Jr., José Carlos Batista Ferreira, Rinaldo Luiz Caraciolo Melo, Wellington Samay de Carvalho, Luiz Felipe Pereira Borba |
dc.subject.por.fl_str_mv |
Clones Morphological descriptors Hybrids Millets Repeatability Dry matter content. Clones Descritores morfológicos Híbridos Milheto Repetibilidade Teor de matéria seca. 5.04.04.04-0 Melhoramento de Plantas Forrageiras e Produção de Sementes |
topic |
Clones Morphological descriptors Hybrids Millets Repeatability Dry matter content. Clones Descritores morfológicos Híbridos Milheto Repetibilidade Teor de matéria seca. 5.04.04.04-0 Melhoramento de Plantas Forrageiras e Produção de Sementes |
description |
The present study was carried out at the Experimental Station of the Agronomical Institute of Pernambuco (IPA) in Itambé-PE to analyse different characters for the initial selection of Pennisetum spp. clones based on the coefficient of repeatability and the number of measurements required to predict their genotypic values (with a coefficient of determination R2 = 0.80). Considering the high number of genotypes in Phase I of the genetic improvement program and the requirement to reduce this number before progression to Phase II, it is relevant to identify characters with high genotypic values, which are easy to measure or acquire and that can be used in the initial selection. Therefore, we chose to evaluate the coefficient of repeatability and the number of measurements necessary to predict the genotypic values of 23 characters, either morphological or productive, of 472 Pennisetum spp. clones, in non-repeated plots. The coefficient of repeatability was estimated using the components of the analysis of variance (ANOVA). Dry matter concentration, leaf blade colour, midrib colour, leaf sheath colour, and internode colour were less affected by environmental conditions, and it was possible to predict their genotypic values (R2 = 0.80) with a maximum of four measurements, indicating that these characters are predictable and reliable for initial selection of Pennisetum spp. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-08-30 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Pesquisa científica |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/18188 10.5433/1679-0359.2016v37n4p2035 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/18188 |
identifier_str_mv |
10.5433/1679-0359.2016v37n4p2035 |
dc.language.iso.fl_str_mv |
eng por |
language |
eng por |
dc.relation.none.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/18188/19640 https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/18188/34278 https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/18188/37817 |
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/vnd.openxmlformats-officedocument.wordprocessingml.document image/pjpeg |
dc.publisher.none.fl_str_mv |
UEL |
publisher.none.fl_str_mv |
UEL |
dc.source.none.fl_str_mv |
Semina: Ciências Agrárias; Vol. 37 No. 4 (2016); 2035-2042 Semina: Ciências Agrárias; v. 37 n. 4 (2016); 2035-2042 1679-0359 1676-546X reponame:Semina. Ciências Agrárias (Online) instname:Universidade Estadual de Londrina (UEL) instacron:UEL |
instname_str |
Universidade Estadual de Londrina (UEL) |
instacron_str |
UEL |
institution |
UEL |
reponame_str |
Semina. Ciências Agrárias (Online) |
collection |
Semina. Ciências Agrárias (Online) |
repository.name.fl_str_mv |
Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL) |
repository.mail.fl_str_mv |
semina.agrarias@uel.br |
_version_ |
1750315420555935744 |