Phenotyping for angular leaf spot severity and its implication in common bean breeding for resistance
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/39880 |
Resumo: | Phenotyping for severity of angular leaf spot (ALS) in common bean is important to identify new sources of resistance and select progenies in conventional and molecular marker-assisted breeding. In this study, three phenotyping methods for ALS severity were assessed and its implications in breeding for resistance to Pseudocercospora griseola are discussed. Reaction of 144 common bean lines to P. griseola was evaluated. Three different experiments were conducted in the greenhouse (V2 and V3 stages) and in the field. Common bean lines were inoculated with a mixture of spores of pathogen races 63-63 and 63-23. We observed that 31 %, 7 % and 10 % of lines were resistant in stages V2, V3 and in the field, respectively. Estimates of coincidence index V2-V3, V2-field and V3-field were 68 %, 69 % and 88 %, respectively. Evaluations in V3 stage and in the field were the phenotyping methods more efficient for ALS severity. However, evaluation in V3 stage is impracticable to assess routinely many genotypes in breeding programs. Evaluation in V2 stage may be used to carry out a first screening, especially in the early stages of breeding programs. Moreover, this methodology may be used in association with evaluation of plants in the field to increase genetic gain. |
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Phenotyping for angular leaf spot severity and its implication in common bean breeding for resistancePhaseolus vulgaris L.Pseudocercospora griseolaGenetic resistanceArtificial inoculationPhenotyping for severity of angular leaf spot (ALS) in common bean is important to identify new sources of resistance and select progenies in conventional and molecular marker-assisted breeding. In this study, three phenotyping methods for ALS severity were assessed and its implications in breeding for resistance to Pseudocercospora griseola are discussed. Reaction of 144 common bean lines to P. griseola was evaluated. Three different experiments were conducted in the greenhouse (V2 and V3 stages) and in the field. Common bean lines were inoculated with a mixture of spores of pathogen races 63-63 and 63-23. We observed that 31 %, 7 % and 10 % of lines were resistant in stages V2, V3 and in the field, respectively. Estimates of coincidence index V2-V3, V2-field and V3-field were 68 %, 69 % and 88 %, respectively. Evaluations in V3 stage and in the field were the phenotyping methods more efficient for ALS severity. However, evaluation in V3 stage is impracticable to assess routinely many genotypes in breeding programs. Evaluation in V2 stage may be used to carry out a first screening, especially in the early stages of breeding programs. Moreover, this methodology may be used in association with evaluation of plants in the field to increase genetic gain.Escola Superior de Agricultura "Luiz de Queiroz"2020-04-08T13:41:39Z2020-04-08T13:41:39Z2019info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfPEREIRA, R. et al. Phenotyping for angular leaf spot severity and its implication in common bean breeding for resistance. Scientia Agricola, Piracicaba, v. 76, n. 5, p. 415-423, Sept./Oct. 2019.http://repositorio.ufla.br/jspui/handle/1/39880Scientia Agricolareponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessPereira, RafaelAbreu, Ângela de Fátima BarbosaNalin, Rafael StortoSouza, Elaine Aparecida deeng2020-04-08T13:42:45Zoai:localhost:1/39880Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2020-04-08T13:42:45Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Phenotyping for angular leaf spot severity and its implication in common bean breeding for resistance |
title |
Phenotyping for angular leaf spot severity and its implication in common bean breeding for resistance |
spellingShingle |
Phenotyping for angular leaf spot severity and its implication in common bean breeding for resistance Pereira, Rafael Phaseolus vulgaris L. Pseudocercospora griseola Genetic resistance Artificial inoculation |
title_short |
Phenotyping for angular leaf spot severity and its implication in common bean breeding for resistance |
title_full |
Phenotyping for angular leaf spot severity and its implication in common bean breeding for resistance |
title_fullStr |
Phenotyping for angular leaf spot severity and its implication in common bean breeding for resistance |
title_full_unstemmed |
Phenotyping for angular leaf spot severity and its implication in common bean breeding for resistance |
title_sort |
Phenotyping for angular leaf spot severity and its implication in common bean breeding for resistance |
author |
Pereira, Rafael |
author_facet |
Pereira, Rafael Abreu, Ângela de Fátima Barbosa Nalin, Rafael Storto Souza, Elaine Aparecida de |
author_role |
author |
author2 |
Abreu, Ângela de Fátima Barbosa Nalin, Rafael Storto Souza, Elaine Aparecida de |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Pereira, Rafael Abreu, Ângela de Fátima Barbosa Nalin, Rafael Storto Souza, Elaine Aparecida de |
dc.subject.por.fl_str_mv |
Phaseolus vulgaris L. Pseudocercospora griseola Genetic resistance Artificial inoculation |
topic |
Phaseolus vulgaris L. Pseudocercospora griseola Genetic resistance Artificial inoculation |
description |
Phenotyping for severity of angular leaf spot (ALS) in common bean is important to identify new sources of resistance and select progenies in conventional and molecular marker-assisted breeding. In this study, three phenotyping methods for ALS severity were assessed and its implications in breeding for resistance to Pseudocercospora griseola are discussed. Reaction of 144 common bean lines to P. griseola was evaluated. Three different experiments were conducted in the greenhouse (V2 and V3 stages) and in the field. Common bean lines were inoculated with a mixture of spores of pathogen races 63-63 and 63-23. We observed that 31 %, 7 % and 10 % of lines were resistant in stages V2, V3 and in the field, respectively. Estimates of coincidence index V2-V3, V2-field and V3-field were 68 %, 69 % and 88 %, respectively. Evaluations in V3 stage and in the field were the phenotyping methods more efficient for ALS severity. However, evaluation in V3 stage is impracticable to assess routinely many genotypes in breeding programs. Evaluation in V2 stage may be used to carry out a first screening, especially in the early stages of breeding programs. Moreover, this methodology may be used in association with evaluation of plants in the field to increase genetic gain. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019 2020-04-08T13:41:39Z 2020-04-08T13:41:39Z |
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 |
PEREIRA, R. et al. Phenotyping for angular leaf spot severity and its implication in common bean breeding for resistance. Scientia Agricola, Piracicaba, v. 76, n. 5, p. 415-423, Sept./Oct. 2019. http://repositorio.ufla.br/jspui/handle/1/39880 |
identifier_str_mv |
PEREIRA, R. et al. Phenotyping for angular leaf spot severity and its implication in common bean breeding for resistance. Scientia Agricola, Piracicaba, v. 76, n. 5, p. 415-423, Sept./Oct. 2019. |
url |
http://repositorio.ufla.br/jspui/handle/1/39880 |
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 |
Escola Superior de Agricultura "Luiz de Queiroz" |
publisher.none.fl_str_mv |
Escola Superior de Agricultura "Luiz de Queiroz" |
dc.source.none.fl_str_mv |
Scientia Agricola 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 |
_version_ |
1815439231625986048 |