General and specific combining ability in tropical winter cauliflower

Detalhes bibliográficos
Autor(a) principal: Arashida, Felipe M.
Data de Publicação: 2017
Outros Autores: Maluf, Wilson R., Carvalho, Regis C.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/36476
Resumo: Few Brazilian cauliflower cultivars have shown to be adapted to tropical winter conditions. In addition, studies to obtain hybrids adapted to our winter conditions, from breeding lines originating from tropical regions, are scarce. The objective of this work was to estimate the combining ability of cauliflower breeding lines. The experiment comprised 38 genotypes, 36 hybrids from a partial diallel cross obtained by crosses between two groups of cauliflower lines: Group I (3 parents) and Group II (12 parents) and 2 commercial controls. We evaluated plant cycle, resistance to diseases, average curd mass, curd color, hollow stalk incidence, and overall evaluation. Additive genetic effects were more important than non-additive effects in the expression of these traits. No single parental line showed simultaneously the most favorable GCA values for all traits. The most promising hybrids were the combinations BR1 x TE6, BR1 x TE8, BR1 x TE12, BR2 x TE11, BR3 x TE6 and BR3 x TE7. The results of the choice of hybrids made by the method of independent culling levels reflect what it could be predicted by estimating GCA for cycle and average mass of the curd, reaffirming the importance of additive effects in the expression of these traits.
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spelling General and specific combining ability in tropical winter cauliflowerCapacidade geral e específica de combinação em couve-flor de invernoBrassica oleracea var. botrytisCauliflower breedingDiallel analysisPartial diallelIndependent culling levelsMelhoramento de brássicasAnálise dialélicaDialelo parcialNíveis independentes de eliminaçãoFew Brazilian cauliflower cultivars have shown to be adapted to tropical winter conditions. In addition, studies to obtain hybrids adapted to our winter conditions, from breeding lines originating from tropical regions, are scarce. The objective of this work was to estimate the combining ability of cauliflower breeding lines. The experiment comprised 38 genotypes, 36 hybrids from a partial diallel cross obtained by crosses between two groups of cauliflower lines: Group I (3 parents) and Group II (12 parents) and 2 commercial controls. We evaluated plant cycle, resistance to diseases, average curd mass, curd color, hollow stalk incidence, and overall evaluation. Additive genetic effects were more important than non-additive effects in the expression of these traits. No single parental line showed simultaneously the most favorable GCA values for all traits. The most promising hybrids were the combinations BR1 x TE6, BR1 x TE8, BR1 x TE12, BR2 x TE11, BR3 x TE6 and BR3 x TE7. The results of the choice of hybrids made by the method of independent culling levels reflect what it could be predicted by estimating GCA for cycle and average mass of the curd, reaffirming the importance of additive effects in the expression of these traits.Poucas cultivares brasileiras de couve-flor têm se mostrado adaptadas às condições de inverno. Além disso, estudos sobre a obtenção de híbridos adaptados às nossas condições de inverno, a partir de linhagens oriundas de regiões tropicais, são escassos. Assim, objetivou-se estimar a capacidade combinatória de linhagens de couve-flor. O experimento constituiu-se de 38 genótipos, sendo 36 híbridos oriundos de um dialelo parcial, obtidos por cruzamentos entre dois grupos de linhagens: grupo I (três genitores) e grupo II (12 genitores) e duas testemunhas comerciais. Foram avaliados o ciclo, resistência a doenças, massa média da cabeça, cor da cabeça, presença de talo oco e avaliação geral. Os efeitos gênicos aditivos foram mais importantes do que os não-aditivos na expressão das características avaliadas. Nenhum parental apresentou concomitantemente os efeitos de Capacidade Geral de Combinação (GCA) mais favoráveis para todas as características avaliadas. Os híbridos experimentais mais promissores foram BR1 x TE6, BR1 x TE8, BR1 x TE12, BR2 x TE11, BR3 x TE6 e BR3 x TE7. Os resultados da escolha de híbridos, feita pelo critério de níveis independentes de eliminação, refletiram em grande parte o que se poderia prever através das estimativas de GCA para as características ciclo e massa média da cabeça, reafirmando a importância dos efeitos aditivos na expressão destas características.Associação Brasileira de Horticultura (ABH)2019-08-27T22:57:58Z2019-08-27T22:57:58Z2017-06info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfARASHIDA, F. M.; MALUF, W. R.; CARVALHO, R. C. General and specific combining ability in tropical winter cauliflower. Horticultura Brasileira, Vitória da Conquista, v. 35, n. 2, p. 57-62, Apr./June 2017. DOI: 10.1590/s0102-053620170203.http://repositorio.ufla.br/jspui/handle/1/36476Horticultura Brasileirareponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessArashida, Felipe M.Maluf, Wilson R.Carvalho, Regis C.eng2019-08-27T22:57:58Zoai:localhost:1/36476Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2019-08-27T22:57:58Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv General and specific combining ability in tropical winter cauliflower
Capacidade geral e específica de combinação em couve-flor de inverno
title General and specific combining ability in tropical winter cauliflower
spellingShingle General and specific combining ability in tropical winter cauliflower
Arashida, Felipe M.
Brassica oleracea var. botrytis
Cauliflower breeding
Diallel analysis
Partial diallel
Independent culling levels
Melhoramento de brássicas
Análise dialélica
Dialelo parcial
Níveis independentes de eliminação
title_short General and specific combining ability in tropical winter cauliflower
title_full General and specific combining ability in tropical winter cauliflower
title_fullStr General and specific combining ability in tropical winter cauliflower
title_full_unstemmed General and specific combining ability in tropical winter cauliflower
title_sort General and specific combining ability in tropical winter cauliflower
author Arashida, Felipe M.
author_facet Arashida, Felipe M.
Maluf, Wilson R.
Carvalho, Regis C.
author_role author
author2 Maluf, Wilson R.
Carvalho, Regis C.
author2_role author
author
dc.contributor.author.fl_str_mv Arashida, Felipe M.
Maluf, Wilson R.
Carvalho, Regis C.
dc.subject.por.fl_str_mv Brassica oleracea var. botrytis
Cauliflower breeding
Diallel analysis
Partial diallel
Independent culling levels
Melhoramento de brássicas
Análise dialélica
Dialelo parcial
Níveis independentes de eliminação
topic Brassica oleracea var. botrytis
Cauliflower breeding
Diallel analysis
Partial diallel
Independent culling levels
Melhoramento de brássicas
Análise dialélica
Dialelo parcial
Níveis independentes de eliminação
description Few Brazilian cauliflower cultivars have shown to be adapted to tropical winter conditions. In addition, studies to obtain hybrids adapted to our winter conditions, from breeding lines originating from tropical regions, are scarce. The objective of this work was to estimate the combining ability of cauliflower breeding lines. The experiment comprised 38 genotypes, 36 hybrids from a partial diallel cross obtained by crosses between two groups of cauliflower lines: Group I (3 parents) and Group II (12 parents) and 2 commercial controls. We evaluated plant cycle, resistance to diseases, average curd mass, curd color, hollow stalk incidence, and overall evaluation. Additive genetic effects were more important than non-additive effects in the expression of these traits. No single parental line showed simultaneously the most favorable GCA values for all traits. The most promising hybrids were the combinations BR1 x TE6, BR1 x TE8, BR1 x TE12, BR2 x TE11, BR3 x TE6 and BR3 x TE7. The results of the choice of hybrids made by the method of independent culling levels reflect what it could be predicted by estimating GCA for cycle and average mass of the curd, reaffirming the importance of additive effects in the expression of these traits.
publishDate 2017
dc.date.none.fl_str_mv 2017-06
2019-08-27T22:57:58Z
2019-08-27T22:57:58Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv ARASHIDA, F. M.; MALUF, W. R.; CARVALHO, R. C. General and specific combining ability in tropical winter cauliflower. Horticultura Brasileira, Vitória da Conquista, v. 35, n. 2, p. 57-62, Apr./June 2017. DOI: 10.1590/s0102-053620170203.
http://repositorio.ufla.br/jspui/handle/1/36476
identifier_str_mv ARASHIDA, F. M.; MALUF, W. R.; CARVALHO, R. C. General and specific combining ability in tropical winter cauliflower. Horticultura Brasileira, Vitória da Conquista, v. 35, n. 2, p. 57-62, Apr./June 2017. DOI: 10.1590/s0102-053620170203.
url http://repositorio.ufla.br/jspui/handle/1/36476
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Associação Brasileira de Horticultura (ABH)
publisher.none.fl_str_mv Associação Brasileira de Horticultura (ABH)
dc.source.none.fl_str_mv Horticultura Brasileira
reponame:Repositório Institucional da UFLA
instname:Universidade Federal de Lavras (UFLA)
instacron:UFLA
instname_str Universidade Federal de Lavras (UFLA)
instacron_str UFLA
institution UFLA
reponame_str Repositório Institucional da UFLA
collection Repositório Institucional da UFLA
repository.name.fl_str_mv Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)
repository.mail.fl_str_mv nivaldo@ufla.br || repositorio.biblioteca@ufla.br
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