Relative efficiencies of selection methods of inbred families in popcorn - DOI: 10.4025/actasciagron.v31i2.578
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , |
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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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 info:eu-repo/semantics/publishedVersion |
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 |
_version_ |
1799305902664187904 |