Estimate of repeatability for selection in mature seedlings of rubber tree
Autor(a) principal: | |
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Data de Publicação: | 2014 |
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/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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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 |
_version_ |
1793416679277985792 |