Relative efficiencies of selection methods of inbred families in popcorn - DOI: 10.4025/actasciagron.v31i2.578

Detalhes bibliográficos
Autor(a) principal: Arnhold, Emmanuel
Data de Publicação: 2009
Outros Autores: Viana, José Marcelo Soriano, Silva, Ricardo Gonçalves, Mora, Freddy
Tipo de documento: Artigo
Idioma: por
Título da fonte: Acta Scientiarum. Agronomy (Online)
Texto Completo: http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/578
Resumo: The study aimed to evaluate the relative efficiency of mass selection, among, within and of proposed new index of combined selection. The index, based on genealogy, was obtained by: , where is the phenotypic value of the plant Sn-1; is the phenotypic value of the Sn family, descendant of the Sn-1 plant; b1 is the weight of the individual phenotypic value, and b2 it is the weight of the phenotypic value of Sn family. The weights were obtained by derivation, assuming that they minimize the variance of the difference between the index and the value of the plant genetic additive Sn-1. To compare the methods, families and inbred plants were used, obtained from the population of Viçosa. A selection was made for popping expansion, using the three methods in S1, S2, S3 and S4 generations, and the efficiency of the methods of comparing averages in popping expansion of descendants of families selected by each method in S2, S3, S4 and S5 was assessed. For comparison of averages, the t-test at 5% of probability was used. It is concluded that the combined selection proposal was superior to the mass selection and was, in general, higher than the selection among and within. The selection among and within was, in general, higher than the mass selection.
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spelling Relative efficiencies of selection methods of inbred families in popcorn - DOI: 10.4025/actasciagron.v31i2.578Eficiências relativas de métodos de seleção de famílias endogâmicas em milho-pipoca - DOI: 10.4025/actasciagron.v31i2.578combined selectionZea mayspopping expansionseleção combinadaZea mayscapacidade de expansãoThe study aimed to evaluate the relative efficiency of mass selection, among, within and of proposed new index of combined selection. The index, based on genealogy, was obtained by: , where is the phenotypic value of the plant Sn-1; is the phenotypic value of the Sn family, descendant of the Sn-1 plant; b1 is the weight of the individual phenotypic value, and b2 it is the weight of the phenotypic value of Sn family. The weights were obtained by derivation, assuming that they minimize the variance of the difference between the index and the value of the plant genetic additive Sn-1. To compare the methods, families and inbred plants were used, obtained from the population of Viçosa. A selection was made for popping expansion, using the three methods in S1, S2, S3 and S4 generations, and the efficiency of the methods of comparing averages in popping expansion of descendants of families selected by each method in S2, S3, S4 and S5 was assessed. For comparison of averages, the t-test at 5% of probability was used. It is concluded that the combined selection proposal was superior to the mass selection and was, in general, higher than the selection among and within. The selection among and within was, in general, higher than the mass selection.Objetivou-se avaliar a eficiência relativa da seleção massal, entre e dentro e de um novo índice de seleção combinada proposto. O índice, baseado na genealogia, foi obtido por: , em que é o valor fenotípico da planta Sn – 1; é o valor fenotípico da família Sn descendente da planta Sn – 1; b1 é o peso do valor fenotípico individual; e b2 é o peso do valor fenotípico de família Sn. Os pesos foram obtidos por derivação, pressupondo que os mesmos minimizam a variância da diferença entre o índice e o valor genético aditivo da planta Sn – 1. Para comparar os métodos, utilizaram-se famílias e plantas endogâmicas, obtidas da população Viçosa. Fez-se seleção em capacidade de expansão, utilizando os três métodos nas gerações S1, S2, S3 e S4, e avaliou-se a eficiência dos métodos comparando médias em capacidade de expansão de famílias descendentes de selecionadas por cada método em S2, S3, S4 e S5. Para comparação de médias, utilizou-se o teste t ao nível de 5% de probabilidade. Concluiu-se que a seleção combinada proposta foi superior à seleção massal e foi, em geral, superior à seleção entre e dentro. A seleção entre e dentro foi, geralmente, superior à seleção massal.Universidade Estadual de Maringá2009-05-14info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/57810.4025/actasciagron.v31i2.578Acta Scientiarum. Agronomy; Vol 31 No 2 (2009); 203-207Acta Scientiarum. Agronomy; v. 31 n. 2 (2009); 203-2071807-86211679-9275reponame:Acta Scientiarum. Agronomy (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/578/578Arnhold, EmmanuelViana, José Marcelo SorianoSilva, Ricardo GonçalvesMora, Freddyinfo:eu-repo/semantics/openAccess2022-11-23T18:37:08Zoai:periodicos.uem.br/ojs:article/578Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgronPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/oaiactaagron@uem.br||actaagron@uem.br|| edamasio@uem.br1807-86211679-9275opendoar:2022-11-23T18:37:08Acta Scientiarum. Agronomy (Online) - Universidade Estadual de Maringá (UEM)false
dc.title.none.fl_str_mv Relative efficiencies of selection methods of inbred families in popcorn - DOI: 10.4025/actasciagron.v31i2.578
Eficiências relativas de métodos de seleção de famílias endogâmicas em milho-pipoca - DOI: 10.4025/actasciagron.v31i2.578
title Relative efficiencies of selection methods of inbred families in popcorn - DOI: 10.4025/actasciagron.v31i2.578
spellingShingle Relative efficiencies of selection methods of inbred families in popcorn - DOI: 10.4025/actasciagron.v31i2.578
Arnhold, Emmanuel
combined selection
Zea mays
popping expansion
seleção combinada
Zea mays
capacidade de expansão
title_short Relative efficiencies of selection methods of inbred families in popcorn - DOI: 10.4025/actasciagron.v31i2.578
title_full Relative efficiencies of selection methods of inbred families in popcorn - DOI: 10.4025/actasciagron.v31i2.578
title_fullStr Relative efficiencies of selection methods of inbred families in popcorn - DOI: 10.4025/actasciagron.v31i2.578
title_full_unstemmed Relative efficiencies of selection methods of inbred families in popcorn - DOI: 10.4025/actasciagron.v31i2.578
title_sort Relative efficiencies of selection methods of inbred families in popcorn - DOI: 10.4025/actasciagron.v31i2.578
author Arnhold, Emmanuel
author_facet Arnhold, Emmanuel
Viana, José Marcelo Soriano
Silva, Ricardo Gonçalves
Mora, Freddy
author_role author
author2 Viana, José Marcelo Soriano
Silva, Ricardo Gonçalves
Mora, Freddy
author2_role author
author
author
dc.contributor.author.fl_str_mv Arnhold, Emmanuel
Viana, José Marcelo Soriano
Silva, Ricardo Gonçalves
Mora, Freddy
dc.subject.por.fl_str_mv combined selection
Zea mays
popping expansion
seleção combinada
Zea mays
capacidade de expansão
topic combined selection
Zea mays
popping expansion
seleção combinada
Zea mays
capacidade de expansão
description The study aimed to evaluate the relative efficiency of mass selection, among, within and of proposed new index of combined selection. The index, based on genealogy, was obtained by: , where is the phenotypic value of the plant Sn-1; is the phenotypic value of the Sn family, descendant of the Sn-1 plant; b1 is the weight of the individual phenotypic value, and b2 it is the weight of the phenotypic value of Sn family. The weights were obtained by derivation, assuming that they minimize the variance of the difference between the index and the value of the plant genetic additive Sn-1. To compare the methods, families and inbred plants were used, obtained from the population of Viçosa. A selection was made for popping expansion, using the three methods in S1, S2, S3 and S4 generations, and the efficiency of the methods of comparing averages in popping expansion of descendants of families selected by each method in S2, S3, S4 and S5 was assessed. For comparison of averages, the t-test at 5% of probability was used. It is concluded that the combined selection proposal was superior to the mass selection and was, in general, higher than the selection among and within. The selection among and within was, in general, higher than the mass selection.
publishDate 2009
dc.date.none.fl_str_mv 2009-05-14
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/578
10.4025/actasciagron.v31i2.578
url http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/578
identifier_str_mv 10.4025/actasciagron.v31i2.578
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/578/578
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 Universidade Estadual de Maringá
publisher.none.fl_str_mv Universidade Estadual de Maringá
dc.source.none.fl_str_mv Acta Scientiarum. Agronomy; Vol 31 No 2 (2009); 203-207
Acta Scientiarum. Agronomy; v. 31 n. 2 (2009); 203-207
1807-8621
1679-9275
reponame:Acta Scientiarum. Agronomy (Online)
instname:Universidade Estadual de Maringá (UEM)
instacron:UEM
instname_str Universidade Estadual de Maringá (UEM)
instacron_str UEM
institution UEM
reponame_str Acta Scientiarum. Agronomy (Online)
collection Acta Scientiarum. Agronomy (Online)
repository.name.fl_str_mv Acta Scientiarum. Agronomy (Online) - Universidade Estadual de Maringá (UEM)
repository.mail.fl_str_mv actaagron@uem.br||actaagron@uem.br|| edamasio@uem.br
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