Repeatability coefficient for the determination of the optimal number of harvests for the selection of zucchini hybrids
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFMG |
Texto Completo: | https://doi.org/10.1590/S1678-3921.pab2022.v57.03016 http://hdl.handle.net/1843/59592 https://orcid.org/0000-0002-8018-6399 https://orcid.org/0000-0002-5010-7725 https://orcid.org/0000-0001-6238-1644 https://orcid.org/0000-0002-2992-5379 https://orcid.org/0000-0002-1411-280X https://orcid.org/0000-0003-2120-8188 https://orcid.org/0000-0001-5196-0851 |
Resumo: | The objective of this work was to estimate the optimal number of harvests for the reliable selection of zucchini (Cucurbita pepo) hybrids through the repeatability coefficient. The experimental design was randomized complete blocks with 33 treatments (31 experimental hybrids and 2 commercial ones) and four replicates, with six plants per plot. Fifteen harvests were carried out. Seven morphoagronomic fruit characteristics were evaluated, and repeatability coefficients were estimated using four statistical methods. The repeatability coefficients ranged from low to moderate, regardless of the studied characteristic. For a high-precision selection (R2≥90%), a high number of evaluated harvests was required, especially for traits related to fruit yield, as follows: 30 to 54 harvests for selection based on total yield; and 43 to 83 harvests for commercial yield, which varied according to the statistical estimation method. The principal component analysis based on the covariance matrix required the least number of harvests for a satisfactory selection precision. Fifteen harvests are sufficient for a satisfactory selection of all evaluated characteristics, with a precision above 70%. |
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2023-10-18T12:21:55Z2023-10-18T12:21:55Z20225719https://doi.org/10.1590/S1678-3921.pab2022.v57.030161678-3921http://hdl.handle.net/1843/59592https://orcid.org/0000-0002-8018-6399https://orcid.org/0000-0002-5010-7725https://orcid.org/0000-0001-6238-1644https://orcid.org/0000-0002-2992-5379https://orcid.org/0000-0002-1411-280Xhttps://orcid.org/0000-0003-2120-8188https://orcid.org/0000-0001-5196-0851The objective of this work was to estimate the optimal number of harvests for the reliable selection of zucchini (Cucurbita pepo) hybrids through the repeatability coefficient. The experimental design was randomized complete blocks with 33 treatments (31 experimental hybrids and 2 commercial ones) and four replicates, with six plants per plot. Fifteen harvests were carried out. Seven morphoagronomic fruit characteristics were evaluated, and repeatability coefficients were estimated using four statistical methods. The repeatability coefficients ranged from low to moderate, regardless of the studied characteristic. For a high-precision selection (R2≥90%), a high number of evaluated harvests was required, especially for traits related to fruit yield, as follows: 30 to 54 harvests for selection based on total yield; and 43 to 83 harvests for commercial yield, which varied according to the statistical estimation method. The principal component analysis based on the covariance matrix required the least number of harvests for a satisfactory selection precision. Fifteen harvests are sufficient for a satisfactory selection of all evaluated characteristics, with a precision above 70%.O objetivo deste trabalho foi estimar o número ótimo de colheitas para a seleção confiável de híbridos de abobrinha-italiana (Cucurbita pepo) por meio do coeficiente de repetibilidade. O delineamento experimental foi em blocos ao acaso, com 33 tratamentos (31 híbridos experimentais e 2 comerciais) e quatro repetições, com seis plantas por parcela. Realizaramse 15 colheitas. Sete características morfoagronômicas dos frutos foram avaliadas, e os coeficientes de repetibilidade foram estimados por meio de quatro métodos estatísticos. Os coeficientes de repetibilidade variaram de baixos a moderados, independentemente da característica estudada. Para uma seleção de alta precisão (R2≥90%), um elevado número de colheitas avaliadas foi necessário, especialmente para as características relacionadas à produtividade de frutos, conforme a seguir: 30 a 54 colheitas para a seleção baseada na produtividade total; e 43 a 83 colheitas para a produtividade comercial, que variou conforme o método estatístico de estimação. A análise de componentes principais baseada na matriz de covariância demandou a menor quantidade de colheitas para uma precisão satisfatória da seleção. São suficientes 15 colheitas para a seleção satisfatória de todas as características avaliadas, com precisão superior a 70%.CNPq - Conselho Nacional de Desenvolvimento Científico e TecnológicoFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas GeraisCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorengUniversidade Federal de Minas GeraisUFMGBrasilICA - INSTITUTO DE CIÊNCIAS AGRÁRIASPesquisa Agropecuária BrasileiraAbobrinha-italianaMelhoramento genéticoBiometriaRepeatability coefficient for the determination of the optimal number of harvests for the selection of zucchini hybridsCoeficiente de repetibilidade para a determinação do número ótimo de colheitas para seleção de abobrinha-italianainfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttps://www.scielo.br/j/pab/a/MKQvFSHD9jd8BdTgQN7QXyG/?format=pdf&lang=enMaria Elisângela Ferreira de OliveiraValter Carvalho de Andrade JúniorOrlando Gonçalves BritoSebastião Márcio AzevedoJeferson Carlos de Oliveira SilvaEduardo Alves da SilvaAlcinei Mistico Azevedoinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFMGinstname:Universidade Federal de Minas Gerais (UFMG)instacron:UFMGORIGINALRepeatability coefficient for the determination of the optimal number of harvests for the selection of zucchini hybrids.pdfRepeatability coefficient for the determination of the optimal number of harvests for the selection of zucchini hybrids.pdfapplication/pdf462432https://repositorio.ufmg.br/bitstream/1843/59592/2/Repeatability%20coefficient%20for%20the%20determination%20of%20the%20optimal%20number%20of%20harvests%20for%20the%20selection%20of%20zucchini%20hybrids.pdf4b488f3bcf8a1c15d77d74b7bbf7fa02MD52LICENSELicense.txtLicense.txttext/plain; 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dc.title.pt_BR.fl_str_mv |
Repeatability coefficient for the determination of the optimal number of harvests for the selection of zucchini hybrids |
dc.title.alternative.pt_BR.fl_str_mv |
Coeficiente de repetibilidade para a determinação do número ótimo de colheitas para seleção de abobrinha-italiana |
title |
Repeatability coefficient for the determination of the optimal number of harvests for the selection of zucchini hybrids |
spellingShingle |
Repeatability coefficient for the determination of the optimal number of harvests for the selection of zucchini hybrids Maria Elisângela Ferreira de Oliveira Abobrinha-italiana Melhoramento genético Biometria |
title_short |
Repeatability coefficient for the determination of the optimal number of harvests for the selection of zucchini hybrids |
title_full |
Repeatability coefficient for the determination of the optimal number of harvests for the selection of zucchini hybrids |
title_fullStr |
Repeatability coefficient for the determination of the optimal number of harvests for the selection of zucchini hybrids |
title_full_unstemmed |
Repeatability coefficient for the determination of the optimal number of harvests for the selection of zucchini hybrids |
title_sort |
Repeatability coefficient for the determination of the optimal number of harvests for the selection of zucchini hybrids |
author |
Maria Elisângela Ferreira de Oliveira |
author_facet |
Maria Elisângela Ferreira de Oliveira Valter Carvalho de Andrade Júnior Orlando Gonçalves Brito Sebastião Márcio Azevedo Jeferson Carlos de Oliveira Silva Eduardo Alves da Silva Alcinei Mistico Azevedo |
author_role |
author |
author2 |
Valter Carvalho de Andrade Júnior Orlando Gonçalves Brito Sebastião Márcio Azevedo Jeferson Carlos de Oliveira Silva Eduardo Alves da Silva Alcinei Mistico Azevedo |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Maria Elisângela Ferreira de Oliveira Valter Carvalho de Andrade Júnior Orlando Gonçalves Brito Sebastião Márcio Azevedo Jeferson Carlos de Oliveira Silva Eduardo Alves da Silva Alcinei Mistico Azevedo |
dc.subject.other.pt_BR.fl_str_mv |
Abobrinha-italiana Melhoramento genético Biometria |
topic |
Abobrinha-italiana Melhoramento genético Biometria |
description |
The objective of this work was to estimate the optimal number of harvests for the reliable selection of zucchini (Cucurbita pepo) hybrids through the repeatability coefficient. The experimental design was randomized complete blocks with 33 treatments (31 experimental hybrids and 2 commercial ones) and four replicates, with six plants per plot. Fifteen harvests were carried out. Seven morphoagronomic fruit characteristics were evaluated, and repeatability coefficients were estimated using four statistical methods. The repeatability coefficients ranged from low to moderate, regardless of the studied characteristic. For a high-precision selection (R2≥90%), a high number of evaluated harvests was required, especially for traits related to fruit yield, as follows: 30 to 54 harvests for selection based on total yield; and 43 to 83 harvests for commercial yield, which varied according to the statistical estimation method. The principal component analysis based on the covariance matrix required the least number of harvests for a satisfactory selection precision. Fifteen harvests are sufficient for a satisfactory selection of all evaluated characteristics, with a precision above 70%. |
publishDate |
2022 |
dc.date.issued.fl_str_mv |
2022 |
dc.date.accessioned.fl_str_mv |
2023-10-18T12:21:55Z |
dc.date.available.fl_str_mv |
2023-10-18T12:21:55Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/1843/59592 |
dc.identifier.doi.pt_BR.fl_str_mv |
https://doi.org/10.1590/S1678-3921.pab2022.v57.03016 |
dc.identifier.issn.pt_BR.fl_str_mv |
1678-3921 |
dc.identifier.orcid.pt_BR.fl_str_mv |
https://orcid.org/0000-0002-8018-6399 https://orcid.org/0000-0002-5010-7725 https://orcid.org/0000-0001-6238-1644 https://orcid.org/0000-0002-2992-5379 https://orcid.org/0000-0002-1411-280X https://orcid.org/0000-0003-2120-8188 https://orcid.org/0000-0001-5196-0851 |
url |
https://doi.org/10.1590/S1678-3921.pab2022.v57.03016 http://hdl.handle.net/1843/59592 https://orcid.org/0000-0002-8018-6399 https://orcid.org/0000-0002-5010-7725 https://orcid.org/0000-0001-6238-1644 https://orcid.org/0000-0002-2992-5379 https://orcid.org/0000-0002-1411-280X https://orcid.org/0000-0003-2120-8188 https://orcid.org/0000-0001-5196-0851 |
identifier_str_mv |
1678-3921 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.none.fl_str_mv |
Pesquisa Agropecuária Brasileira |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de Minas Gerais |
dc.publisher.initials.fl_str_mv |
UFMG |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
ICA - INSTITUTO DE CIÊNCIAS AGRÁRIAS |
publisher.none.fl_str_mv |
Universidade Federal de Minas Gerais |
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reponame:Repositório Institucional da UFMG instname:Universidade Federal de Minas Gerais (UFMG) instacron:UFMG |
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Universidade Federal de Minas Gerais (UFMG) |
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UFMG |
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UFMG |
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Repositório Institucional da UFMG |
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