Evaluation of alfalfa cultivars and estimates of repeatability coefficient of forage traits

Detalhes bibliográficos
Autor(a) principal: Ferreira, Reinaldo de Paula
Data de Publicação: 1999
Outros Autores: Botrel, Milton de Andrade, Pereira, Antonio Vander, Cruz, Cosme Damião
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/5278
Resumo: The objective of this study was to evaluate the performance of 42 cultivars of alfalfa (Medicago sativa L.) and to estimate the repeatability coefficient for dry matter production, leaf and stem protein content and disease tolerance features during the dry (April to September) and rainy (October to March) seasons with six cuts. Dry matter yield and leaf protein content presented significant variation in both seasons, although stem protein content and tolerance to diseases were different only during the dry season. Cultivars Crioula and Cibola had the best performance in most features. In general, the repeatability coefficient showed a low magnitude estimate (below 0,40). Regarding dry matter production, the cultivars showed similar behavior in both seasons, with repeatability coefficient ranging from 0.3195 to 0.4270, genotypic determination around 65% and the possibility to predict the real value after seven to nine cuts.
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spelling Evaluation of alfalfa cultivars and estimates of repeatability coefficient of forage traitsAvaliação de cultivares de alfafa e estimativas de repetibilidade de caracteres forrageirosforage; breeding; correlationforrageira; melhoramento; correlaçõesThe objective of this study was to evaluate the performance of 42 cultivars of alfalfa (Medicago sativa L.) and to estimate the repeatability coefficient for dry matter production, leaf and stem protein content and disease tolerance features during the dry (April to September) and rainy (October to March) seasons with six cuts. Dry matter yield and leaf protein content presented significant variation in both seasons, although stem protein content and tolerance to diseases were different only during the dry season. Cultivars Crioula and Cibola had the best performance in most features. In general, the repeatability coefficient showed a low magnitude estimate (below 0,40). Regarding dry matter production, the cultivars showed similar behavior in both seasons, with repeatability coefficient ranging from 0.3195 to 0.4270, genotypic determination around 65% and the possibility to predict the real value after seven to nine cuts.O objetivo deste trabalho foi avaliar o desempenho de 42 cultivares de alfafa (Medicago sativa L.) e estimar o coeficiente de repetibilidade das características produção de matéria seca, teor de proteína bruta na folha e no caule e tolerância a doenças, avaliadas no período das águas (outubro a março) e da seca (abril a setembro), em seis cortes. Observou-se variabilidade significativa entre as cultivares quanto à produção de matéria seca e ao teor de proteína bruta na folha, em ambas as estações. No tocante a teor de proteína bruta no caule e tolerância a doenças, a variabilidade foi manifestada apenas no período da seca. As cultivares de melhor desempenho, para a maioria das características avaliadas, foram Crioula e Cibola. Em geral, o coeficiente de repetibilidade apresentou estimativas de baixa magnitude (inferior a 0,4). Quanto à produção de matéria seca, constatou-se a existência de comportamento similar das cultivares avaliadas nos dois períodos estudados, coeficiente de repetibilidade variando de 0,3195 a 0,4270, determinação genotípica em torno de 65%, e possibilidade de se atingir a predição do valor real por meio de sete a nove cortes.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraFerreira, Reinaldo de PaulaBotrel, Milton de AndradePereira, Antonio VanderCruz, Cosme Damião1999-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/5278Pesquisa Agropecuaria Brasileira; v.34, n.6, jun. 1999; 995-1002Pesquisa Agropecuária Brasileira; v.34, n.6, jun. 1999; 995-10021678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/5278/2470info:eu-repo/semantics/openAccess2010-07-09T14:05:37Zoai:ojs.seer.sct.embrapa.br:article/5278Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2010-07-09T14:05:37Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Evaluation of alfalfa cultivars and estimates of repeatability coefficient of forage traits
Avaliação de cultivares de alfafa e estimativas de repetibilidade de caracteres forrageiros
title Evaluation of alfalfa cultivars and estimates of repeatability coefficient of forage traits
spellingShingle Evaluation of alfalfa cultivars and estimates of repeatability coefficient of forage traits
Ferreira, Reinaldo de Paula
forage; breeding; correlation
forrageira; melhoramento; correlações
title_short Evaluation of alfalfa cultivars and estimates of repeatability coefficient of forage traits
title_full Evaluation of alfalfa cultivars and estimates of repeatability coefficient of forage traits
title_fullStr Evaluation of alfalfa cultivars and estimates of repeatability coefficient of forage traits
title_full_unstemmed Evaluation of alfalfa cultivars and estimates of repeatability coefficient of forage traits
title_sort Evaluation of alfalfa cultivars and estimates of repeatability coefficient of forage traits
author Ferreira, Reinaldo de Paula
author_facet Ferreira, Reinaldo de Paula
Botrel, Milton de Andrade
Pereira, Antonio Vander
Cruz, Cosme Damião
author_role author
author2 Botrel, Milton de Andrade
Pereira, Antonio Vander
Cruz, Cosme Damião
author2_role author
author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Ferreira, Reinaldo de Paula
Botrel, Milton de Andrade
Pereira, Antonio Vander
Cruz, Cosme Damião
dc.subject.por.fl_str_mv forage; breeding; correlation
forrageira; melhoramento; correlações
topic forage; breeding; correlation
forrageira; melhoramento; correlações
description The objective of this study was to evaluate the performance of 42 cultivars of alfalfa (Medicago sativa L.) and to estimate the repeatability coefficient for dry matter production, leaf and stem protein content and disease tolerance features during the dry (April to September) and rainy (October to March) seasons with six cuts. Dry matter yield and leaf protein content presented significant variation in both seasons, although stem protein content and tolerance to diseases were different only during the dry season. Cultivars Crioula and Cibola had the best performance in most features. In general, the repeatability coefficient showed a low magnitude estimate (below 0,40). Regarding dry matter production, the cultivars showed similar behavior in both seasons, with repeatability coefficient ranging from 0.3195 to 0.4270, genotypic determination around 65% and the possibility to predict the real value after seven to nine cuts.
publishDate 1999
dc.date.none.fl_str_mv 1999-06-01
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/5278
url https://seer.sct.embrapa.br/index.php/pab/article/view/5278
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/5278/2470
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.34, n.6, jun. 1999; 995-1002
Pesquisa Agropecuária Brasileira; v.34, n.6, jun. 1999; 995-1002
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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