Estimate of repeatability for selection in mature seedlings of rubber tree

Detalhes bibliográficos
Autor(a) principal: Gonçalves, Paulo de Souza
Data de Publicação: 2014
Outros Autores: Cardoso, Mario, Sáes, Luis Alberto
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/13549
Resumo: The present study was carried out to determine the number of annual means of tapping required to select mature seedlings of superior genotypes of rubber trees (Hevea spp). Coefficients of repeatability (p) were estimated by using analysis of variance for anual mean of two, three, four, five and six tappings. An average repeatability value ( 0.815) was obtained, and the highest repeatability estimated was 5= 0.983, value obtained for five-year tappings. These results showed that the genetic variance between plants was higher when compared with the environmental variance. The largest progress in the selection was obtained utilizing two, five and six-year tappings with of 31.03%, 33.24% and 31.93%, respectively. Based on the results, it was concluded that two-year repeatability with a high percentual of genetic gain for two years tapping showed a better progress in the selection
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spelling Estimate of repeatability for selection in mature seedlings of rubber treeEstimativas de repetibilidade na seleção de árvores adultas de seringueiraHevea; genetic variance; environmental variance; genetic gainHevea variância genética; variância ambiental; ganho genéticoThe present study was carried out to determine the number of annual means of tapping required to select mature seedlings of superior genotypes of rubber trees (Hevea spp). Coefficients of repeatability (p) were estimated by using analysis of variance for anual mean of two, three, four, five and six tappings. An average repeatability value ( 0.815) was obtained, and the highest repeatability estimated was 5= 0.983, value obtained for five-year tappings. These results showed that the genetic variance between plants was higher when compared with the environmental variance. The largest progress in the selection was obtained utilizing two, five and six-year tappings with of 31.03%, 33.24% and 31.93%, respectively. Based on the results, it was concluded that two-year repeatability with a high percentual of genetic gain for two years tapping showed a better progress in the selectionO presente estudo foi conduzido com o objetivo de determinar o número de anos de sangria necessários para a seleção de genótipos superiores em populações adultas de pés francos de seringueira (Hevea spp.). Foram estimados os coeficientes de repetibilidade (p), considerando o método de análise de variância para médias anuais de dois, três, quatro, cinco e seis anos. A repetibilidade média obtida foi de = 0,815, e a mais elevada foi de p= 0,983 para cinco anos de sangria. Tais resultados mostram que a variância genética entre plantas foi relativamente alta em comparação com a variância ambiental. Os maiores progressos esperados na seleção foram obtidos com dois, cinco e seis anos de sangria, com percentuais de 31,03, 33,24 e 3 1,93% respectivamente. Com base nos resultados, conclui-se que as estimativas do coeficiente de repetibildade e o alto percentual de ganho genético para dois anos de sangria, embora ligeiramente inferiores aos coeficientes e ganhos de cinco e seis anos, indicam que uma seleção massal conduzida nesta fase proporciona, efetivamente, maior progresso na seleçãoPesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraGonçalves, Paulo de SouzaCardoso, MarioSáes, Luis Alberto2014-04-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/13549Pesquisa Agropecuaria Brasileira; v.25, n.7, jul. 1990; 1031-1038Pesquisa Agropecuária Brasileira; v.25, n.7, jul. 1990; 1031-10381678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/13549/7693info:eu-repo/semantics/openAccess2014-04-17T14:34:50Zoai:ojs.seer.sct.embrapa.br:article/13549Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-17T14:34:50Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Estimate of repeatability for selection in mature seedlings of rubber tree
Estimativas de repetibilidade na seleção de árvores adultas de seringueira
title Estimate of repeatability for selection in mature seedlings of rubber tree
spellingShingle Estimate of repeatability for selection in mature seedlings of rubber tree
Gonçalves, Paulo de Souza
Hevea; genetic variance; environmental variance; genetic gain
Hevea variância genética; variância ambiental; ganho genético
title_short Estimate of repeatability for selection in mature seedlings of rubber tree
title_full Estimate of repeatability for selection in mature seedlings of rubber tree
title_fullStr Estimate of repeatability for selection in mature seedlings of rubber tree
title_full_unstemmed Estimate of repeatability for selection in mature seedlings of rubber tree
title_sort Estimate of repeatability for selection in mature seedlings of rubber tree
author Gonçalves, Paulo de Souza
author_facet Gonçalves, Paulo de Souza
Cardoso, Mario
Sáes, Luis Alberto
author_role author
author2 Cardoso, Mario
Sáes, Luis Alberto
author2_role author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Gonçalves, Paulo de Souza
Cardoso, Mario
Sáes, Luis Alberto
dc.subject.por.fl_str_mv Hevea; genetic variance; environmental variance; genetic gain
Hevea variância genética; variância ambiental; ganho genético
topic Hevea; genetic variance; environmental variance; genetic gain
Hevea variância genética; variância ambiental; ganho genético
description The present study was carried out to determine the number of annual means of tapping required to select mature seedlings of superior genotypes of rubber trees (Hevea spp). Coefficients of repeatability (p) were estimated by using analysis of variance for anual mean of two, three, four, five and six tappings. An average repeatability value ( 0.815) was obtained, and the highest repeatability estimated was 5= 0.983, value obtained for five-year tappings. These results showed that the genetic variance between plants was higher when compared with the environmental variance. The largest progress in the selection was obtained utilizing two, five and six-year tappings with of 31.03%, 33.24% and 31.93%, respectively. Based on the results, it was concluded that two-year repeatability with a high percentual of genetic gain for two years tapping showed a better progress in the selection
publishDate 2014
dc.date.none.fl_str_mv 2014-04-17
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/13549
url https://seer.sct.embrapa.br/index.php/pab/article/view/13549
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/13549/7693
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.25, n.7, jul. 1990; 1031-1038
Pesquisa Agropecuária Brasileira; v.25, n.7, jul. 1990; 1031-1038
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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