Experimental precision in common bean trials using the Papadakis method
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/10022 |
Resumo: | The objective of this work was to verify whether the use of the Papadakis method in the analysis of the results of common bean cultivar trials modifies the assumptions of the mathematical model and the experimental precision indicators. Common bean yield data obtained from 26 cultivar trials carried out in randomized complete block design were used. For each trial, with or without the use of the Papadakis method, the assumptions were verified, the analysis of variance and the hypothesis tests were carried out, and statistics were calculated in order to identify experimental precision. The assumptions were not violated by either method (with or without the Papadakis method). The Fasoulas index increased from 5.9 to 13.9, and the selective accuracy from 0.82 to 0.89 with the Papadakis method. This method allowed the identification, with 80% precision, of superior common bean cultivars regarding grain yield using only four replicates, while seven replicates were necessary to maintain 80% precision in the analysis without the Papadakis method. The Papadakis method improves the indices of experimental precision and reduces the number of replicates necessary to predict the performance of common bean cultivars regarding grain yield. |
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Experimental precision in common bean trials using the Papadakis methodPrecisão experimental de ensaios de feijão analisada pelo método de PapadakisPhaseolus vulgaris; spatial analysis; competition trials; precision indicators; assumptionsPhaseolus vulgaris; análise espacial; ensaios de competição; medidas de precisão; pressupostosThe objective of this work was to verify whether the use of the Papadakis method in the analysis of the results of common bean cultivar trials modifies the assumptions of the mathematical model and the experimental precision indicators. Common bean yield data obtained from 26 cultivar trials carried out in randomized complete block design were used. For each trial, with or without the use of the Papadakis method, the assumptions were verified, the analysis of variance and the hypothesis tests were carried out, and statistics were calculated in order to identify experimental precision. The assumptions were not violated by either method (with or without the Papadakis method). The Fasoulas index increased from 5.9 to 13.9, and the selective accuracy from 0.82 to 0.89 with the Papadakis method. This method allowed the identification, with 80% precision, of superior common bean cultivars regarding grain yield using only four replicates, while seven replicates were necessary to maintain 80% precision in the analysis without the Papadakis method. The Papadakis method improves the indices of experimental precision and reduces the number of replicates necessary to predict the performance of common bean cultivars regarding grain yield. O objetivo deste trabalho foi verificar se o uso do método de Papadakis na análise dos resultados dos ensaios de competição de cultivares de feijão modifica os pressupostos do modelo matemático e as medidas de precisão experimental. Foram utilizados dados de produtividade de grãos de feijão de 26 ensaios de competição de cultivares, conduzidos em delineamento de blocos ao acaso. Para cada ensaio, sem e com uso do método de Papadakis, foram realizados verificação dos pressupostos, análise de variância e testes de hipóteses, e calculadas as estatísticas para identificação da precisão experimental. Os pressupostos não foram violados por nenhum dos métodos de análise (sem e com Papadakis). O índice de diferenciação de Fasoulas aumentou de 5,9 para 13,9, e a acurácia seletiva de 0,82 para 0,89, com uso do método de Papadakis. Esse método permitiu que se obtivesse 80% de precisão na identificação de cultivares de feijão superiores quanto à produtividade de grãos com uso de apenas quatro repetições; enquanto que, na análise sem uso de Papadakis, foram necessárias sete repetições para manter a precisão de 80%. O método de Papadakis melhora os índices das medidas de precisão experimental e reduz o número de repetições necessário para a predição do desempenho de cultivares de feijão, em termos de produtividade de grãos.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraCNPqStorck, LindolfoRibeiro, Nerinéia DalfolloCargnelutti Filho, Alberto2011-10-26info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/10022Pesquisa Agropecuaria Brasileira; v.46, n.8, ago. 2011; 798-804Pesquisa Agropecuária Brasileira; v.46, n.8, ago. 2011; 798-8041678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/10022/6496https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/10022/5336info:eu-repo/semantics/openAccess2014-06-04T18:54:46Zoai:ojs.seer.sct.embrapa.br:article/10022Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-06-04T18:54:46Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Experimental precision in common bean trials using the Papadakis method Precisão experimental de ensaios de feijão analisada pelo método de Papadakis |
title |
Experimental precision in common bean trials using the Papadakis method |
spellingShingle |
Experimental precision in common bean trials using the Papadakis method Storck, Lindolfo Phaseolus vulgaris; spatial analysis; competition trials; precision indicators; assumptions Phaseolus vulgaris; análise espacial; ensaios de competição; medidas de precisão; pressupostos |
title_short |
Experimental precision in common bean trials using the Papadakis method |
title_full |
Experimental precision in common bean trials using the Papadakis method |
title_fullStr |
Experimental precision in common bean trials using the Papadakis method |
title_full_unstemmed |
Experimental precision in common bean trials using the Papadakis method |
title_sort |
Experimental precision in common bean trials using the Papadakis method |
author |
Storck, Lindolfo |
author_facet |
Storck, Lindolfo Ribeiro, Nerinéia Dalfollo Cargnelutti Filho, Alberto |
author_role |
author |
author2 |
Ribeiro, Nerinéia Dalfollo Cargnelutti Filho, Alberto |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
CNPq |
dc.contributor.author.fl_str_mv |
Storck, Lindolfo Ribeiro, Nerinéia Dalfollo Cargnelutti Filho, Alberto |
dc.subject.por.fl_str_mv |
Phaseolus vulgaris; spatial analysis; competition trials; precision indicators; assumptions Phaseolus vulgaris; análise espacial; ensaios de competição; medidas de precisão; pressupostos |
topic |
Phaseolus vulgaris; spatial analysis; competition trials; precision indicators; assumptions Phaseolus vulgaris; análise espacial; ensaios de competição; medidas de precisão; pressupostos |
description |
The objective of this work was to verify whether the use of the Papadakis method in the analysis of the results of common bean cultivar trials modifies the assumptions of the mathematical model and the experimental precision indicators. Common bean yield data obtained from 26 cultivar trials carried out in randomized complete block design were used. For each trial, with or without the use of the Papadakis method, the assumptions were verified, the analysis of variance and the hypothesis tests were carried out, and statistics were calculated in order to identify experimental precision. The assumptions were not violated by either method (with or without the Papadakis method). The Fasoulas index increased from 5.9 to 13.9, and the selective accuracy from 0.82 to 0.89 with the Papadakis method. This method allowed the identification, with 80% precision, of superior common bean cultivars regarding grain yield using only four replicates, while seven replicates were necessary to maintain 80% precision in the analysis without the Papadakis method. The Papadakis method improves the indices of experimental precision and reduces the number of replicates necessary to predict the performance of common bean cultivars regarding grain yield. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-10-26 |
dc.type.none.fl_str_mv |
|
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://seer.sct.embrapa.br/index.php/pab/article/view/10022 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/10022 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/10022/6496 https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/10022/5336 |
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 |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.46, n.8, ago. 2011; 798-804 Pesquisa Agropecuária Brasileira; v.46, n.8, ago. 2011; 798-804 1678-3921 0100-104x reponame:Pesquisa Agropecuária 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 Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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1793416661369356288 |