Repeatability coefficient and efficiency of micro tapping, test in seedlings of rubber tree

Detalhes bibliográficos
Autor(a) principal: Gonçalves, Paulo de Souza
Data de Publicação: 2014
Outros Autores: Rossetti, Adroaldo G., Paiva, João Rodrigues de
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/15618
Resumo: The present study was carried out to determine the number of micro tapping test required to select seedlings of superior genotype in rubber tree (Hevea sp.) stock nursery. Three rounds of tests were carried out on half sib seedlings of RRIM 600 clone. Repeatibility coefficient (r) was estimated with two round and three round tests. For three round tests, the variances were estimated among plants in three different ways: a. analysis of variances that utilize one round test as replication (σ2p = 297.4232); b. analysis of variance isolating the effect of the test (σ2y = 300.5388) and c. by Vencovsky’s method (σ2g = 297.1777). The values of repeatibility coefficient estimated above were r = 0.7736, r = 0.7946 and r = 0.7731 respectivelly. These results show that the environmental variance within plant was low when compared with the variance among plants. The repeatibility coefficient for two round tests (r = 0.8317) was superior to three round tests, indicating that this value is inversely related to the number of tests utilized.
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spelling Repeatability coefficient and efficiency of micro tapping, test in seedlings of rubber treeCoeficiente de repetibilidade e eficiência do miniteste de produção na seleção de plantas de seringueiraHevea sp.; genotype; environmental variance; linear correlationHevea sp.; plântulas; variância ambiental; correlação linearThe present study was carried out to determine the number of micro tapping test required to select seedlings of superior genotype in rubber tree (Hevea sp.) stock nursery. Three rounds of tests were carried out on half sib seedlings of RRIM 600 clone. Repeatibility coefficient (r) was estimated with two round and three round tests. For three round tests, the variances were estimated among plants in three different ways: a. analysis of variances that utilize one round test as replication (σ2p = 297.4232); b. analysis of variance isolating the effect of the test (σ2y = 300.5388) and c. by Vencovsky’s method (σ2g = 297.1777). The values of repeatibility coefficient estimated above were r = 0.7736, r = 0.7946 and r = 0.7731 respectivelly. These results show that the environmental variance within plant was low when compared with the variance among plants. The repeatibility coefficient for two round tests (r = 0.8317) was superior to three round tests, indicating that this value is inversely related to the number of tests utilized.O presente estudo foi conduzido com o objetivo de determinar o número adequado de minitestes de produção na seleção de plântulas de genótipos superiores em viveiros de seringueira (Hevea sp.). Foram utilizados três minitestes em plântulas de polinização aberta do clone RRIM 600 e em seguida estimados os coeficientes de repetibilidade (r) para dois e três testes. No cálculo do coeficiente para três testes, foram estimadas as variâncias entre plantas, através da análise de variância, que utiliza teste como repetição (σ2p = 297,4232) e análise com efeito de teste isolado (σ2y = 300,5388) e pela metodologia apresentada por Vencovsky (σ2g = 297,1777). As estimativas dos coeficientes de repetibilidade pelos três processos foram r = 0,7736, r = 0,7946 e r = 0,7731, respectivamente, indicando que a variância ambiental dentro de plantas foi relativamente baixa comparada com a variação existente entre plantas. O coeficiente de repetibilidade encontrado para os dois primeiros testes (r = 0,8317) foi ligeiramente superior aos encontrados para três testes, evidenciando que o valor do coeficiente de repetibilidade tende a ser inversamente proporcional ao número de testes aplicados.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraGonçalves, Paulo de SouzaRossetti, Adroaldo G.Paiva, João Rodrigues de2014-04-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/15618Pesquisa Agropecuaria Brasileira; v.17, n.2, fev. 1982; 233-237Pesquisa Agropecuária Brasileira; v.17, n.2, fev. 1982; 233-2371678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/15618/9613info:eu-repo/semantics/openAccess2014-04-16T12:24:16Zoai:ojs.seer.sct.embrapa.br:article/15618Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-16T12:24:16Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Repeatability coefficient and efficiency of micro tapping, test in seedlings of rubber tree
Coeficiente de repetibilidade e eficiência do miniteste de produção na seleção de plantas de seringueira
title Repeatability coefficient and efficiency of micro tapping, test in seedlings of rubber tree
spellingShingle Repeatability coefficient and efficiency of micro tapping, test in seedlings of rubber tree
Gonçalves, Paulo de Souza
Hevea sp.; genotype; environmental variance; linear correlation
Hevea sp.; plântulas; variância ambiental; correlação linear
title_short Repeatability coefficient and efficiency of micro tapping, test in seedlings of rubber tree
title_full Repeatability coefficient and efficiency of micro tapping, test in seedlings of rubber tree
title_fullStr Repeatability coefficient and efficiency of micro tapping, test in seedlings of rubber tree
title_full_unstemmed Repeatability coefficient and efficiency of micro tapping, test in seedlings of rubber tree
title_sort Repeatability coefficient and efficiency of micro tapping, test in seedlings of rubber tree
author Gonçalves, Paulo de Souza
author_facet Gonçalves, Paulo de Souza
Rossetti, Adroaldo G.
Paiva, João Rodrigues de
author_role author
author2 Rossetti, Adroaldo G.
Paiva, João Rodrigues de
author2_role author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Gonçalves, Paulo de Souza
Rossetti, Adroaldo G.
Paiva, João Rodrigues de
dc.subject.por.fl_str_mv Hevea sp.; genotype; environmental variance; linear correlation
Hevea sp.; plântulas; variância ambiental; correlação linear
topic Hevea sp.; genotype; environmental variance; linear correlation
Hevea sp.; plântulas; variância ambiental; correlação linear
description The present study was carried out to determine the number of micro tapping test required to select seedlings of superior genotype in rubber tree (Hevea sp.) stock nursery. Three rounds of tests were carried out on half sib seedlings of RRIM 600 clone. Repeatibility coefficient (r) was estimated with two round and three round tests. For three round tests, the variances were estimated among plants in three different ways: a. analysis of variances that utilize one round test as replication (σ2p = 297.4232); b. analysis of variance isolating the effect of the test (σ2y = 300.5388) and c. by Vencovsky’s method (σ2g = 297.1777). The values of repeatibility coefficient estimated above were r = 0.7736, r = 0.7946 and r = 0.7731 respectivelly. These results show that the environmental variance within plant was low when compared with the variance among plants. The repeatibility coefficient for two round tests (r = 0.8317) was superior to three round tests, indicating that this value is inversely related to the number of tests utilized.
publishDate 2014
dc.date.none.fl_str_mv 2014-04-16
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/15618
url https://seer.sct.embrapa.br/index.php/pab/article/view/15618
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/15618/9613
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.17, n.2, fev. 1982; 233-237
Pesquisa Agropecuária Brasileira; v.17, n.2, fev. 1982; 233-237
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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