Repeatability of agro-industrial characteristics in sugar cane

Detalhes bibliográficos
Autor(a) principal: dos Santos, Maria Silvia Monteiro
Data de Publicação: 2004
Outros Autores: Madalena, José Antônio, Soares, Lailton, Ferreira, Paulo Vanderlei, Barbosa, Geraldo Veríssimo Souza
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/6773
Resumo: The objectives of this work were to establish repeatability estimates for agro-industrial characteristics for twenty genotypes of sugar cane, to indicate the determination coefficient of each character and the prediction of truthful value of each clone. The design consisted of randomized blocks, with five replications. The analysis of variance with two factors of variation (cuts and genotypes) and the analysis of the main components were used to estimate the repeatability coefficient (ρ^), initiating with three cuts. Estimates of repeatability were obtained over 0.5 for fiber and ton of cane per hectare, in both methods, with confidence over 84% by the method of main components. Characteristics lower than 0.5 and determination lower than 74% need a greater number of measures. The methods of main components and analysis of variance evidenced, in five cuts, determination over 80% for fiber, percentage of pol (sucrose) in the juice of cane, tons of cane per hectare and tons of pol in the juice of cane per hectare, though the first had been most efficient. Considering tons of cane per hectare and tons of pol in the juice of cane per hectare, the clones RB9371, RB9350 and RB9364 are the best.
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spelling Repeatability of agro-industrial characteristics in sugar caneRepetibilidade de características agroindustriais em cana-de-açúcarSaccharum; clones; selection; analysis of variance; principal componentsSaccharum; clones; seleção; análise de variância; componentes principaisThe objectives of this work were to establish repeatability estimates for agro-industrial characteristics for twenty genotypes of sugar cane, to indicate the determination coefficient of each character and the prediction of truthful value of each clone. The design consisted of randomized blocks, with five replications. The analysis of variance with two factors of variation (cuts and genotypes) and the analysis of the main components were used to estimate the repeatability coefficient (ρ^), initiating with three cuts. Estimates of repeatability were obtained over 0.5 for fiber and ton of cane per hectare, in both methods, with confidence over 84% by the method of main components. Characteristics lower than 0.5 and determination lower than 74% need a greater number of measures. The methods of main components and analysis of variance evidenced, in five cuts, determination over 80% for fiber, percentage of pol (sucrose) in the juice of cane, tons of cane per hectare and tons of pol in the juice of cane per hectare, though the first had been most efficient. Considering tons of cane per hectare and tons of pol in the juice of cane per hectare, the clones RB9371, RB9350 and RB9364 are the best.Os objetivos deste trabalho foram estabelecer estimativas de repetibilidade de características agroindustriais em 20 genótipos de cana-de-açúcar, determinar a previsibilidade de cada caráter e indicar a predição do valor verdadeiro de cada clone. O delineamento utilizado foi blocos casualizados, com cinco repetições. Utilizaram-se a análise de variância com dois fatores de variação (cortes e genótipos) e a análise dos componentes principais para estimar o coeficiente de repetibilidade (ρ^), a partir de três cortes. Foram obtidas estimativas de repetibilidade acima de 0,5 para fibra e toneladas de cana por hectare, em ambos os métodos, com confiabilidade maior que 84% pelo método dos componentes principais. As características que ficaram abaixo de 0,5, com previsibilidade inferior a 74%, necessitam de um maior número de avaliações. Os métodos dos componentes principais e análise de variância indicaram, em cinco cortes, uma previsibilidade maior que 80% para fibra, porcentagem de pol (sacarose) no caldo da cana, toneladas de cana por hectare e toneladas de pol no caldo da cana por hectare, embora o primeiro tenha sido mais eficiente. Considerando toneladas de cana por hectare e toneladas de pol no caldo da cana por hectare, os clones RB9371, RB9350 e RB9364 são os melhores.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária Brasileirados Santos, Maria Silvia MonteiroMadalena, José AntônioSoares, LailtonFerreira, Paulo VanderleiBarbosa, Geraldo Veríssimo Souza2004-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/6773Pesquisa Agropecuaria Brasileira; v.39, n.4, abr. 2004; 301-306Pesquisa Agropecuária Brasileira; v.39, n.4, abr. 2004; 301-3061678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/6773/3829info:eu-repo/semantics/openAccess2014-10-16T18:41:37Zoai:ojs.seer.sct.embrapa.br:article/6773Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-10-16T18:41:37Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Repeatability of agro-industrial characteristics in sugar cane
Repetibilidade de características agroindustriais em cana-de-açúcar
title Repeatability of agro-industrial characteristics in sugar cane
spellingShingle Repeatability of agro-industrial characteristics in sugar cane
dos Santos, Maria Silvia Monteiro
Saccharum; clones; selection; analysis of variance; principal components
Saccharum; clones; seleção; análise de variância; componentes principais
title_short Repeatability of agro-industrial characteristics in sugar cane
title_full Repeatability of agro-industrial characteristics in sugar cane
title_fullStr Repeatability of agro-industrial characteristics in sugar cane
title_full_unstemmed Repeatability of agro-industrial characteristics in sugar cane
title_sort Repeatability of agro-industrial characteristics in sugar cane
author dos Santos, Maria Silvia Monteiro
author_facet dos Santos, Maria Silvia Monteiro
Madalena, José Antônio
Soares, Lailton
Ferreira, Paulo Vanderlei
Barbosa, Geraldo Veríssimo Souza
author_role author
author2 Madalena, José Antônio
Soares, Lailton
Ferreira, Paulo Vanderlei
Barbosa, Geraldo Veríssimo Souza
author2_role author
author
author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv dos Santos, Maria Silvia Monteiro
Madalena, José Antônio
Soares, Lailton
Ferreira, Paulo Vanderlei
Barbosa, Geraldo Veríssimo Souza
dc.subject.por.fl_str_mv Saccharum; clones; selection; analysis of variance; principal components
Saccharum; clones; seleção; análise de variância; componentes principais
topic Saccharum; clones; selection; analysis of variance; principal components
Saccharum; clones; seleção; análise de variância; componentes principais
description The objectives of this work were to establish repeatability estimates for agro-industrial characteristics for twenty genotypes of sugar cane, to indicate the determination coefficient of each character and the prediction of truthful value of each clone. The design consisted of randomized blocks, with five replications. The analysis of variance with two factors of variation (cuts and genotypes) and the analysis of the main components were used to estimate the repeatability coefficient (ρ^), initiating with three cuts. Estimates of repeatability were obtained over 0.5 for fiber and ton of cane per hectare, in both methods, with confidence over 84% by the method of main components. Characteristics lower than 0.5 and determination lower than 74% need a greater number of measures. The methods of main components and analysis of variance evidenced, in five cuts, determination over 80% for fiber, percentage of pol (sucrose) in the juice of cane, tons of cane per hectare and tons of pol in the juice of cane per hectare, though the first had been most efficient. Considering tons of cane per hectare and tons of pol in the juice of cane per hectare, the clones RB9371, RB9350 and RB9364 are the best.
publishDate 2004
dc.date.none.fl_str_mv 2004-04-01
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/6773
url https://seer.sct.embrapa.br/index.php/pab/article/view/6773
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/6773/3829
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.39, n.4, abr. 2004; 301-306
Pesquisa Agropecuária Brasileira; v.39, n.4, abr. 2004; 301-306
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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