Measurements of experimental precision and number of replicates in sugarcane genotype trials
Autor(a) principal: | |
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Data de Publicação: | 2012 |
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/12890 |
Resumo: | The objective of this work was to evaluate the appropriateness of the statistics selective accuracy and F‑test value for genotype as measurements of the experimental precision degree, and to determine the number of measurements (replicates) necessary to predict the performance of sugarcane genotypes (Saccharum officinarum). Data on stalk yield from three harvests in 68 genotype competition trials of sugarcane were used. In all trials, the experimental design was a randomized complete block, with three replicates and number of genotypes between 16 and 28. Correlation and path analyses were performed and the frequency of trials was calculated in each experimental precision class. Repeatability coefficients were estimated and the number of needed replicates was calculated to predict true genotypic values. The statistics selective accuracy and F‑test value for genotype are appropriate to evaluate the experimental precision of sugarcane genotype competition trials. Trials with three replicates identify superior sugarcane genotypes, with 80% accuracy of the true prognostic value. |
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Measurements of experimental precision and number of replicates in sugarcane genotype trialsMedidas de precisão experimental e número de repetições em ensaios de genótipos de cana‑de‑açúcarSaccharum officinarum; experimental planning; stalk yield; experimental quality; repeatabilitySaccharum officinarum; planejamento experimental; produtividade de colmos; qualidade experimental; repetibilidadeThe objective of this work was to evaluate the appropriateness of the statistics selective accuracy and F‑test value for genotype as measurements of the experimental precision degree, and to determine the number of measurements (replicates) necessary to predict the performance of sugarcane genotypes (Saccharum officinarum). Data on stalk yield from three harvests in 68 genotype competition trials of sugarcane were used. In all trials, the experimental design was a randomized complete block, with three replicates and number of genotypes between 16 and 28. Correlation and path analyses were performed and the frequency of trials was calculated in each experimental precision class. Repeatability coefficients were estimated and the number of needed replicates was calculated to predict true genotypic values. The statistics selective accuracy and F‑test value for genotype are appropriate to evaluate the experimental precision of sugarcane genotype competition trials. Trials with three replicates identify superior sugarcane genotypes, with 80% accuracy of the true prognostic value.O objetivo deste trabalho foi avaliar a adequação das estatísticas acurácia seletiva e valor do teste F para genótipo como medidas do grau de precisão experimental, e determinar o número de medições (repetições) necessário à predição do desempenho de genótipos de cana‑de‑açúcar (Saccharum officinarum). Foram utilizados dados de produtividade de colmos, de três colheitas realizadas em 68 ensaios de competição de genótipos de cana‑de‑açúcar. Em todos os ensaios, os genótipos foram avaliados no delineamento de blocos ao acaso, com três repetições e número de genótipos entre 16 e 28. Foram realizadas análises de correlação e de trilha e calculada a frequência de ensaios em cada classe de precisão experimental. Foram estimados os coeficientes de repetibilidade, e calculado o número de repetições necessárias para predizer o valor real dos genótipos. As estatísticas acurácia seletiva e valor do teste F para genótipo são adequadas para avaliar a precisão experimental em ensaios de competição de genótipos de cana‑de‑açúcar. Ensaios com três repetições identificam genótipos superiores de cana‑de‑açúcar, com 80% de exatidão no prognóstico de seu valor real.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraCNPqCNPqCargnelutti Filho, AlbertoBraga Junior, Rubens Leite do CantoLúcio, Alessandro Dal’Col2012-11-29info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/12890Pesquisa Agropecuaria Brasileira; v.47, n.10, out. 2012; 1413-1421Pesquisa Agropecuária Brasileira; v.47, n.10, out. 2012; 1413-14211678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/12890/8136https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/12890/8609info:eu-repo/semantics/openAccess2012-12-04T20:49:19Zoai:ojs.seer.sct.embrapa.br:article/12890Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2012-12-04T20:49:19Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Measurements of experimental precision and number of replicates in sugarcane genotype trials Medidas de precisão experimental e número de repetições em ensaios de genótipos de cana‑de‑açúcar |
title |
Measurements of experimental precision and number of replicates in sugarcane genotype trials |
spellingShingle |
Measurements of experimental precision and number of replicates in sugarcane genotype trials Cargnelutti Filho, Alberto Saccharum officinarum; experimental planning; stalk yield; experimental quality; repeatability Saccharum officinarum; planejamento experimental; produtividade de colmos; qualidade experimental; repetibilidade |
title_short |
Measurements of experimental precision and number of replicates in sugarcane genotype trials |
title_full |
Measurements of experimental precision and number of replicates in sugarcane genotype trials |
title_fullStr |
Measurements of experimental precision and number of replicates in sugarcane genotype trials |
title_full_unstemmed |
Measurements of experimental precision and number of replicates in sugarcane genotype trials |
title_sort |
Measurements of experimental precision and number of replicates in sugarcane genotype trials |
author |
Cargnelutti Filho, Alberto |
author_facet |
Cargnelutti Filho, Alberto Braga Junior, Rubens Leite do Canto Lúcio, Alessandro Dal’Col |
author_role |
author |
author2 |
Braga Junior, Rubens Leite do Canto Lúcio, Alessandro Dal’Col |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
CNPq CNPq |
dc.contributor.author.fl_str_mv |
Cargnelutti Filho, Alberto Braga Junior, Rubens Leite do Canto Lúcio, Alessandro Dal’Col |
dc.subject.por.fl_str_mv |
Saccharum officinarum; experimental planning; stalk yield; experimental quality; repeatability Saccharum officinarum; planejamento experimental; produtividade de colmos; qualidade experimental; repetibilidade |
topic |
Saccharum officinarum; experimental planning; stalk yield; experimental quality; repeatability Saccharum officinarum; planejamento experimental; produtividade de colmos; qualidade experimental; repetibilidade |
description |
The objective of this work was to evaluate the appropriateness of the statistics selective accuracy and F‑test value for genotype as measurements of the experimental precision degree, and to determine the number of measurements (replicates) necessary to predict the performance of sugarcane genotypes (Saccharum officinarum). Data on stalk yield from three harvests in 68 genotype competition trials of sugarcane were used. In all trials, the experimental design was a randomized complete block, with three replicates and number of genotypes between 16 and 28. Correlation and path analyses were performed and the frequency of trials was calculated in each experimental precision class. Repeatability coefficients were estimated and the number of needed replicates was calculated to predict true genotypic values. The statistics selective accuracy and F‑test value for genotype are appropriate to evaluate the experimental precision of sugarcane genotype competition trials. Trials with three replicates identify superior sugarcane genotypes, with 80% accuracy of the true prognostic value. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-11-29 |
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/12890 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/12890 |
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/12890/8136 https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/12890/8609 |
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.47, n.10, out. 2012; 1413-1421 Pesquisa Agropecuária Brasileira; v.47, n.10, out. 2012; 1413-1421 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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1793416716388139008 |