Variability of nodulation traits in Andean and Mesoamerican common bean gene pools

Detalhes bibliográficos
Autor(a) principal: Knupp, Adriano Moreira
Data de Publicação: 2017
Outros Autores: Ferreira, Enderson Petrônio de Brito, Araújo, Adelson Paulo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/24558
Resumo: The objective of this work was to evaluate the genotypic diversity for nodulation in common bean (Phaseolus vulgaris) genotypes of Andean and Mesoamerican gene pools present in the core collections of Embrapa, in Brazil. Evaluations were carried out in two stages: the first one with 879 genotypes, taking the cultivar 'Ouro Negro' as reference; and the second one with 116 genotypes with greater nodulation, to identify those showing stability in nodulation in the two stages. Rhizobium strains were inoculated in pre-germinated common bean seed. Plants received weekly a nutrient solution without N, and nodulation was evaluated 35 days after planting. The percentage of genotypes that exceeded the reference cultivar was 22% for number of nodules, 46% for nodule dry weight, and 33% for one nodule dry weight. The combined analysis of data from the two evaluation phases showed wide differences among genotypes, and significant interactions between genotypes and stages. By the orthogonal contrasts analysis, the Mesoamerican genotypes showed a greater nodulation than the Andean ones. In both stages, twenty-six more stable genotypes were identified, most of them belonging to the Mesoamerican gene pool. There is a large variability in nodulation traits among the common bean genotypes present in the core germplasm collections of Embrapa, which suggests that there are genotypes with improved nodulation.
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spelling Variability of nodulation traits in Andean and Mesoamerican common bean gene poolsVariabilidade das características de nodulação em feijoeiro-comum dos conjuntos gênicos andino e mesoamericanoPhaseolus vulgaris; biological nitrogen fixation; diversity; germplasm bankPhaseolus vulgaris; fixação biológica de nitrogênio; diversidade; banco de germoplasmaThe objective of this work was to evaluate the genotypic diversity for nodulation in common bean (Phaseolus vulgaris) genotypes of Andean and Mesoamerican gene pools present in the core collections of Embrapa, in Brazil. Evaluations were carried out in two stages: the first one with 879 genotypes, taking the cultivar 'Ouro Negro' as reference; and the second one with 116 genotypes with greater nodulation, to identify those showing stability in nodulation in the two stages. Rhizobium strains were inoculated in pre-germinated common bean seed. Plants received weekly a nutrient solution without N, and nodulation was evaluated 35 days after planting. The percentage of genotypes that exceeded the reference cultivar was 22% for number of nodules, 46% for nodule dry weight, and 33% for one nodule dry weight. The combined analysis of data from the two evaluation phases showed wide differences among genotypes, and significant interactions between genotypes and stages. By the orthogonal contrasts analysis, the Mesoamerican genotypes showed a greater nodulation than the Andean ones. In both stages, twenty-six more stable genotypes were identified, most of them belonging to the Mesoamerican gene pool. There is a large variability in nodulation traits among the common bean genotypes present in the core germplasm collections of Embrapa, which suggests that there are genotypes with improved nodulation.O objetivo deste trabalho foi avaliar a diversidade genotípica quanto à nodulação em genótipos de feijoeiro-comum (Phaseolus vulgaris) pertencentes aos conjuntos gênicos andino e mesoamericano presentes nas coleções nucleares da Embrapa, no Brasil. As avaliações foram realizadas em dois estágios: o primeiro com 879 genótipos, tendo-se a cultivar 'Ouro Negro' como referência; e o segundo, com 116 genótipos de maior nodulação, para identificar aqueles com estabilidade de nodulação nos dois estágios. Estirpes de Rhizobium foram inoculadas em sementes de feijão pré-germinadas. As plantas receberam, semanalmente, uma solução nutritiva isenta de N, e a nodulação foi avaliada 35 dias após o plantio. O percentual de genótipos que superaram a cultivar-referência foi de: 22%, quanto ao número de nódulos; 46%, quanto à massa de matéria seca de nódulos; e 33%, quanto à massa de matéria seca de um nódulo. A análise conjunta dos dados das duas fases de avaliação identificou amplas diferenças entre genótipos e interações significativas entre genótipos e estágios. Na análise de contrastes ortogonais, os genótipos mesoamericanos apresentaram maior nodulação do que os andinos. Foram identificados 26 genótipos mais estáveis nos dois estágios, a maioria deles pertencente ao conjunto gênico mesoamericano. Há uma ampla variabilidade em caracteres relacionados à nodulação entre os genótipos de feijoeiro presentes nas coleções nucleares da Embrapa, o que é indício de que há genótipos com maior nodulação.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraEmpresa Brasileira de Pesquisa Agropecuária (Embrapa, Protocol No. 21161.000167/2016-73)Knupp, Adriano MoreiraFerreira, Enderson Petrônio de BritoAraújo, Adelson Paulo2017-05-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/24558Pesquisa Agropecuaria Brasileira; v.52, n.4, abr. 2017; 252-260Pesquisa Agropecuária Brasileira; v.52, n.4, abr. 2017; 252-2601678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAenghttps://seer.sct.embrapa.br/index.php/pab/article/view/24558/13734https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/24558/16411Direitos autorais 2017 Pesquisa Agropecuária Brasileirainfo:eu-repo/semantics/openAccess2017-05-08T12:18:29Zoai:ojs.seer.sct.embrapa.br:article/24558Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2017-05-08T12:18:29Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Variability of nodulation traits in Andean and Mesoamerican common bean gene pools
Variabilidade das características de nodulação em feijoeiro-comum dos conjuntos gênicos andino e mesoamericano
title Variability of nodulation traits in Andean and Mesoamerican common bean gene pools
spellingShingle Variability of nodulation traits in Andean and Mesoamerican common bean gene pools
Knupp, Adriano Moreira
Phaseolus vulgaris; biological nitrogen fixation; diversity; germplasm bank
Phaseolus vulgaris; fixação biológica de nitrogênio; diversidade; banco de germoplasma
title_short Variability of nodulation traits in Andean and Mesoamerican common bean gene pools
title_full Variability of nodulation traits in Andean and Mesoamerican common bean gene pools
title_fullStr Variability of nodulation traits in Andean and Mesoamerican common bean gene pools
title_full_unstemmed Variability of nodulation traits in Andean and Mesoamerican common bean gene pools
title_sort Variability of nodulation traits in Andean and Mesoamerican common bean gene pools
author Knupp, Adriano Moreira
author_facet Knupp, Adriano Moreira
Ferreira, Enderson Petrônio de Brito
Araújo, Adelson Paulo
author_role author
author2 Ferreira, Enderson Petrônio de Brito
Araújo, Adelson Paulo
author2_role author
author
dc.contributor.none.fl_str_mv Empresa Brasileira de Pesquisa Agropecuária (Embrapa, Protocol No. 21161.000167/2016-73)

dc.contributor.author.fl_str_mv Knupp, Adriano Moreira
Ferreira, Enderson Petrônio de Brito
Araújo, Adelson Paulo
dc.subject.por.fl_str_mv Phaseolus vulgaris; biological nitrogen fixation; diversity; germplasm bank
Phaseolus vulgaris; fixação biológica de nitrogênio; diversidade; banco de germoplasma
topic Phaseolus vulgaris; biological nitrogen fixation; diversity; germplasm bank
Phaseolus vulgaris; fixação biológica de nitrogênio; diversidade; banco de germoplasma
description The objective of this work was to evaluate the genotypic diversity for nodulation in common bean (Phaseolus vulgaris) genotypes of Andean and Mesoamerican gene pools present in the core collections of Embrapa, in Brazil. Evaluations were carried out in two stages: the first one with 879 genotypes, taking the cultivar 'Ouro Negro' as reference; and the second one with 116 genotypes with greater nodulation, to identify those showing stability in nodulation in the two stages. Rhizobium strains were inoculated in pre-germinated common bean seed. Plants received weekly a nutrient solution without N, and nodulation was evaluated 35 days after planting. The percentage of genotypes that exceeded the reference cultivar was 22% for number of nodules, 46% for nodule dry weight, and 33% for one nodule dry weight. The combined analysis of data from the two evaluation phases showed wide differences among genotypes, and significant interactions between genotypes and stages. By the orthogonal contrasts analysis, the Mesoamerican genotypes showed a greater nodulation than the Andean ones. In both stages, twenty-six more stable genotypes were identified, most of them belonging to the Mesoamerican gene pool. There is a large variability in nodulation traits among the common bean genotypes present in the core germplasm collections of Embrapa, which suggests that there are genotypes with improved nodulation.
publishDate 2017
dc.date.none.fl_str_mv 2017-05-08
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/24558
url https://seer.sct.embrapa.br/index.php/pab/article/view/24558
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/24558/13734
https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/24558/16411
dc.rights.driver.fl_str_mv Direitos autorais 2017 Pesquisa Agropecuária Brasileira
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Direitos autorais 2017 Pesquisa Agropecuária Brasileira
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.52, n.4, abr. 2017; 252-260
Pesquisa Agropecuária Brasileira; v.52, n.4, abr. 2017; 252-260
1678-3921
0100-104x
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repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
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