Repeatability and harvest numbers in selecting sugarcane clones
Autor(a) principal: | |
---|---|
Data de Publicação: | 2005 |
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/7023 |
Resumo: | This work aimed at the establishment of the repeatability coefficients (r), determination of the predictability degree (R2) and the needed measurement numbers for tons of cane per hectare, percentage of pol (sucrose) in the juice of cane and tons of pol in the juice of cane per hectare in sugarcane genotypes. A randomized block experimental design, with three replicates in four experiments and four replicates in the other experiments was used. The repeatability estimates were obtained by the statistical methods: anova; main components based on correlation matrix; and structural analysis (correlation, average r). The estimates of the repeatability coefficients showed values with very similar magnitude. The general average repeatability for those three traits was above 0.60, therefore showing regularity in the genotype performance at several measurements (cuts) and reliability in the genotype discrimination that was higher than 87%. The results showed that for those three traits there is a need for the use of, at least, three cuts so that the selection can be accomplished with predictability of a real value above 80% for the genotype. |
id |
EMBRAPA-4_0b100fbfee957b492214df3f47c2990d |
---|---|
oai_identifier_str |
oai:ojs.seer.sct.embrapa.br:article/7023 |
network_acronym_str |
EMBRAPA-4 |
network_name_str |
Pesquisa Agropecuária Brasileira (Online) |
repository_id_str |
|
spelling |
Repeatability and harvest numbers in selecting sugarcane clonesRepetibilidade e número de colheitas para seleção de clones de cana-de-açúcarSaccharum spp.; clones; variance analysis; main components; structural analysisSaccharum spp.; clones; análise de variância; componentes principais; análise estrutural This work aimed at the establishment of the repeatability coefficients (r), determination of the predictability degree (R2) and the needed measurement numbers for tons of cane per hectare, percentage of pol (sucrose) in the juice of cane and tons of pol in the juice of cane per hectare in sugarcane genotypes. A randomized block experimental design, with three replicates in four experiments and four replicates in the other experiments was used. The repeatability estimates were obtained by the statistical methods: anova; main components based on correlation matrix; and structural analysis (correlation, average r). The estimates of the repeatability coefficients showed values with very similar magnitude. The general average repeatability for those three traits was above 0.60, therefore showing regularity in the genotype performance at several measurements (cuts) and reliability in the genotype discrimination that was higher than 87%. The results showed that for those three traits there is a need for the use of, at least, three cuts so that the selection can be accomplished with predictability of a real value above 80% for the genotype.Os objetivos deste trabalho foram estabelecer estimativas dos coeficientes de repetibilidade (r) e determinar a previsibilidade (R2) e o número de medições necessárias das características toneladas de colmos por hectare, toneladas de sacarose no caldo da cana por hectare e teor de sacarose dos colmos, pol porcento cana, em genótipos de cana-de-açúcar. O delineamento experimental utilizado foi o de blocos casualizados, com três repetições em quatro experimentos e quatro repetições nos demais experimentos. As estimativas de repetibilidade foram obtidas pelos métodos estatísticos da análise de variância, componentes principais com base na matriz de correlações e análise estrutural (correlação, r – médio). As estimativas dos coeficientes de repetibilidade revelaram valores muito semelhantes. A repetibilidade média geral nas três características foi superior a 0,60, demonstrando regularidade do desempenho dos genótipos nas várias medições (cortes) e confiabilidade na discriminação genotípica superior a 87%. Verificou-se, nas três características, a necessidade do emprego de no mínimo três cortes, para que a seleção possa ser praticada com previsibilidade do valor real do genótipo acima de 80%.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraFerreira, AdésioBarbosa, Márcio Henrique PereiraCruz, Cosme DamiãoHoffmann, Hermann PauloVieira, Marcos Antonio SanchesBassinello, Antonio Ismaelda Silva, Marcia Flores2005-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/7023Pesquisa Agropecuaria Brasileira; v.40, n.8, ago. 2005; 761-767Pesquisa Agropecuária Brasileira; v.40, n.8, ago. 2005; 761-7671678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/7023/4071info:eu-repo/semantics/openAccess2014-09-22T16:44:37Zoai:ojs.seer.sct.embrapa.br:article/7023Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-09-22T16:44:37Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Repeatability and harvest numbers in selecting sugarcane clones Repetibilidade e número de colheitas para seleção de clones de cana-de-açúcar |
title |
Repeatability and harvest numbers in selecting sugarcane clones |
spellingShingle |
Repeatability and harvest numbers in selecting sugarcane clones Ferreira, Adésio Saccharum spp.; clones; variance analysis; main components; structural analysis Saccharum spp.; clones; análise de variância; componentes principais; análise estrutural |
title_short |
Repeatability and harvest numbers in selecting sugarcane clones |
title_full |
Repeatability and harvest numbers in selecting sugarcane clones |
title_fullStr |
Repeatability and harvest numbers in selecting sugarcane clones |
title_full_unstemmed |
Repeatability and harvest numbers in selecting sugarcane clones |
title_sort |
Repeatability and harvest numbers in selecting sugarcane clones |
author |
Ferreira, Adésio |
author_facet |
Ferreira, Adésio Barbosa, Márcio Henrique Pereira Cruz, Cosme Damião Hoffmann, Hermann Paulo Vieira, Marcos Antonio Sanches Bassinello, Antonio Ismael da Silva, Marcia Flores |
author_role |
author |
author2 |
Barbosa, Márcio Henrique Pereira Cruz, Cosme Damião Hoffmann, Hermann Paulo Vieira, Marcos Antonio Sanches Bassinello, Antonio Ismael da Silva, Marcia Flores |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Ferreira, Adésio Barbosa, Márcio Henrique Pereira Cruz, Cosme Damião Hoffmann, Hermann Paulo Vieira, Marcos Antonio Sanches Bassinello, Antonio Ismael da Silva, Marcia Flores |
dc.subject.por.fl_str_mv |
Saccharum spp.; clones; variance analysis; main components; structural analysis Saccharum spp.; clones; análise de variância; componentes principais; análise estrutural |
topic |
Saccharum spp.; clones; variance analysis; main components; structural analysis Saccharum spp.; clones; análise de variância; componentes principais; análise estrutural |
description |
This work aimed at the establishment of the repeatability coefficients (r), determination of the predictability degree (R2) and the needed measurement numbers for tons of cane per hectare, percentage of pol (sucrose) in the juice of cane and tons of pol in the juice of cane per hectare in sugarcane genotypes. A randomized block experimental design, with three replicates in four experiments and four replicates in the other experiments was used. The repeatability estimates were obtained by the statistical methods: anova; main components based on correlation matrix; and structural analysis (correlation, average r). The estimates of the repeatability coefficients showed values with very similar magnitude. The general average repeatability for those three traits was above 0.60, therefore showing regularity in the genotype performance at several measurements (cuts) and reliability in the genotype discrimination that was higher than 87%. The results showed that for those three traits there is a need for the use of, at least, three cuts so that the selection can be accomplished with predictability of a real value above 80% for the genotype. |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005-08-01 |
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/7023 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/7023 |
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/7023/4071 |
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.40, n.8, ago. 2005; 761-767 Pesquisa Agropecuária Brasileira; v.40, n.8, ago. 2005; 761-767 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 |
_version_ |
1793416711205027840 |