Selection of cassava genotypes resistance to dry root rot

Detalhes bibliográficos
Autor(a) principal: Bonfim Jr., Mauro Ferreira
Data de Publicação: 2020
Outros Autores: Zaia, Jeferson Thiago, Moreto, Alexsander Luís, Pola, Augusto Carlos, Nunes, Eduardo da Costa, Peruch, Luiz Augusto Martins
Tipo de documento: Artigo
Idioma: por
Título da fonte: Agropecuária Catarinense (Online)
Texto Completo: https://publicacoes.epagri.sc.gov.br/rac/article/view/498
Resumo: Dry root rot is the most damaging disease of cassava (Manihot esculenta Crantz). Yield reduction caused by the disease range from 30% to 100%. This work aimed to assess cultivars and advanced clones from the cassava’s genetic breeding program of Epagri for resistance to dry root rot caused by Fusarium solani. A suspension of F. solani spores was inoculated on root discs of 21 cassava genotypes, in a concentration of 1.5 x 10 7 conidia mL-1 in four experiments. The disease severity was assessed through the percentage area colonized by the fungus. Stems of the more promising genotypes in resistance tests were selected for tests with F. solani in greenhouse. The cultivar Luna has potential to be used in F. solani infested areas and/or as progenitor for the breeding program, as it was the more resistant and presented high values of mass of aerial part and roots among the genotypes tested. Also the genotypes SC12-5035 and SC12-5029 showed potential for use in integratedmanagement of the disease. 
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spelling Selection of cassava genotypes resistance to dry root rotComportamento de genótipos de mandioca quanto à podridão seca das raízesFusarium solaniF. oxysporumresistanceFusarium solaniF. oxysporumresistênciaDry root rot is the most damaging disease of cassava (Manihot esculenta Crantz). Yield reduction caused by the disease range from 30% to 100%. This work aimed to assess cultivars and advanced clones from the cassava’s genetic breeding program of Epagri for resistance to dry root rot caused by Fusarium solani. A suspension of F. solani spores was inoculated on root discs of 21 cassava genotypes, in a concentration of 1.5 x 10 7 conidia mL-1 in four experiments. The disease severity was assessed through the percentage area colonized by the fungus. Stems of the more promising genotypes in resistance tests were selected for tests with F. solani in greenhouse. The cultivar Luna has potential to be used in F. solani infested areas and/or as progenitor for the breeding program, as it was the more resistant and presented high values of mass of aerial part and roots among the genotypes tested. Also the genotypes SC12-5035 and SC12-5029 showed potential for use in integratedmanagement of the disease. RESUMO - A podridão seca das raízes é uma das doenças mais destrutivas da mandioca (Manihot esculenta Crantz) podendo ocasionar perdas de produção de 30% à 100%. Este trabalho teve por objetivo avaliar cultivares e clones avançados provenientes do programa de melhoramento genético de mandioca da EPAGRI, quanto à resistência à podridão seca causada por Fusarium solani. Uma suspensão de esporos de isolados de F. solani foi inoculada sobre discos de raízes de 21 genótipos de mandioca na concentração de 1,5 x 107 conídios.mL-1 em quatro experimentos. A severidade da doença foi avaliada por meio da porcentagem da área afetada pelo fungo. As manivas dos genótipos mais promissores nos testes de resistência foram selecionadas para testes com F. solani em casa de vegetação. O genótipo Luna foi o mais resistente dentre os avaliados e apresentou elevados valores de massa fresca de parte aérea e de raízes, tendo potencial para ser utilizado em áreas infestadas por F. solani e/ou como progenitor no melhoramento da cultura. Também os genótipos SC12-5035 e SC 12-5029 apresentaram potencial para uso em programas de manejo integrado da doença. Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina - Epagri2020-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://publicacoes.epagri.sc.gov.br/rac/article/view/49810.52945/rac.v33i1.498Agropecuária Catarinense Journal; Vol. 33 No. 1 (2020); 38-43Agropecuária Catarinense; v. 33 n. 1 (2020); 38-432525-60760103-0779reponame:Agropecuária Catarinense (Online)instname:Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (Epagri)instacron:EPAGRIporhttps://publicacoes.epagri.sc.gov.br/rac/article/view/498/704https://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessBonfim Jr., Mauro FerreiraZaia, Jeferson ThiagoMoreto, Alexsander LuísPola, Augusto CarlosNunes, Eduardo da CostaPeruch, Luiz Augusto Martins2021-06-01T16:36:59Zoai:ojs.publicacoes.epagri.sc.gov.br:article/498Revistahttps://publicacoes.epagri.sc.gov.br/RAC/indexPUBhttps://publicacoes.epagri.sc.gov.br/index.php/RAC/oaieditoriarac@epagri.sc.gov.br || lamperuch@epagri.sc.gov.br2525-60760103-0779opendoar:2021-06-01T16:36:59Agropecuária Catarinense (Online) - Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (Epagri)false
dc.title.none.fl_str_mv Selection of cassava genotypes resistance to dry root rot
Comportamento de genótipos de mandioca quanto à podridão seca das raízes
title Selection of cassava genotypes resistance to dry root rot
spellingShingle Selection of cassava genotypes resistance to dry root rot
Bonfim Jr., Mauro Ferreira
Fusarium solani
F. oxysporum
resistance
Fusarium solani
F. oxysporum
resistência
title_short Selection of cassava genotypes resistance to dry root rot
title_full Selection of cassava genotypes resistance to dry root rot
title_fullStr Selection of cassava genotypes resistance to dry root rot
title_full_unstemmed Selection of cassava genotypes resistance to dry root rot
title_sort Selection of cassava genotypes resistance to dry root rot
author Bonfim Jr., Mauro Ferreira
author_facet Bonfim Jr., Mauro Ferreira
Zaia, Jeferson Thiago
Moreto, Alexsander Luís
Pola, Augusto Carlos
Nunes, Eduardo da Costa
Peruch, Luiz Augusto Martins
author_role author
author2 Zaia, Jeferson Thiago
Moreto, Alexsander Luís
Pola, Augusto Carlos
Nunes, Eduardo da Costa
Peruch, Luiz Augusto Martins
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Bonfim Jr., Mauro Ferreira
Zaia, Jeferson Thiago
Moreto, Alexsander Luís
Pola, Augusto Carlos
Nunes, Eduardo da Costa
Peruch, Luiz Augusto Martins
dc.subject.por.fl_str_mv Fusarium solani
F. oxysporum
resistance
Fusarium solani
F. oxysporum
resistência
topic Fusarium solani
F. oxysporum
resistance
Fusarium solani
F. oxysporum
resistência
description Dry root rot is the most damaging disease of cassava (Manihot esculenta Crantz). Yield reduction caused by the disease range from 30% to 100%. This work aimed to assess cultivars and advanced clones from the cassava’s genetic breeding program of Epagri for resistance to dry root rot caused by Fusarium solani. A suspension of F. solani spores was inoculated on root discs of 21 cassava genotypes, in a concentration of 1.5 x 10 7 conidia mL-1 in four experiments. The disease severity was assessed through the percentage area colonized by the fungus. Stems of the more promising genotypes in resistance tests were selected for tests with F. solani in greenhouse. The cultivar Luna has potential to be used in F. solani infested areas and/or as progenitor for the breeding program, as it was the more resistant and presented high values of mass of aerial part and roots among the genotypes tested. Also the genotypes SC12-5035 and SC12-5029 showed potential for use in integratedmanagement of the disease. 
publishDate 2020
dc.date.none.fl_str_mv 2020-05-01
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://publicacoes.epagri.sc.gov.br/rac/article/view/498
10.52945/rac.v33i1.498
url https://publicacoes.epagri.sc.gov.br/rac/article/view/498
identifier_str_mv 10.52945/rac.v33i1.498
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://publicacoes.epagri.sc.gov.br/rac/article/view/498/704
dc.rights.driver.fl_str_mv https://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv https://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 Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina - Epagri
publisher.none.fl_str_mv Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina - Epagri
dc.source.none.fl_str_mv Agropecuária Catarinense Journal; Vol. 33 No. 1 (2020); 38-43
Agropecuária Catarinense; v. 33 n. 1 (2020); 38-43
2525-6076
0103-0779
reponame:Agropecuária Catarinense (Online)
instname:Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (Epagri)
instacron:EPAGRI
instname_str Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (Epagri)
instacron_str EPAGRI
institution EPAGRI
reponame_str Agropecuária Catarinense (Online)
collection Agropecuária Catarinense (Online)
repository.name.fl_str_mv Agropecuária Catarinense (Online) - Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (Epagri)
repository.mail.fl_str_mv editoriarac@epagri.sc.gov.br || lamperuch@epagri.sc.gov.br
_version_ 1754917258998579200

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