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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
26/10/2023 |
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Data da última atualização: |
26/01/2024 |
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Autoria: |
PEDRO, C.; MARÇOLA, M. A.; CHARIMBA, A. M.; QUEIROZ, L. G. C. DE; SOUZA, J. C. DE. |
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Afiliação: |
CÉSAR PEDRO, UNIVERSIDADE FEDERAL DE LAVRAS; MARIA ANGÉLICA MARÇOLA, UNIVERSIDADE FEDERAL DE LAVRAS; ALCIDES MÁRIO CHARIMBA, UNIVERSIDADE FEDERAL DE LAVRAS; LORENA GABRIELA COELHO DE QUEIROZ, UNIVERSIDADE FEDERAL DE LAVRAS; JOÃO CÂNDIDO DE SOUZA, UNIVERSIDADE FEDERAL LAVRAS. |
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Título: |
Genetic potential of maize full-sib progenies subjected to a reciprocal recurrent selection. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, v. 58, e03134, 2023. |
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DOI: |
https://doi.org/10.1590/S1678-3921.pab2023.v58.03134 |
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Idioma: |
Inglês |
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Notas: |
Título em português: Potencial genético de progênies de irmãos germanos de milho em seleção recorrente recíproca. |
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Conteúdo: |
ABSTRACT - The objective of this work was to quantify the genetic potential of full-sib maize progenies subjected to a reciprocal recurrent selection, in order to obtain high-yielding hybrids. The experiment was carried out in the alpha lattice design, with three replicates and 24 blocks. One hundred and two full?sib maize progenies, from the crossing of two populations and two checks, were evaluated for the following traits: grain yield, seed mass, number of ears per plant, days to maturity, days to anthesis, days to silking, anthesis-silking interval, ear height, plant height, ear position, and stem lodging. Genetic parameters were estimated through REML/BLUP and multivariate analyses (correlation and similarity network, cluster heat map, and genetic gains). There are genetic variability and divergent clusters among the studied full-sib maize progenies. Seed mass, number of ears per plant, and anthesis-silking interval are the traits that most contribute to the improvement of grain yield and divergence among the full-sib maize progenies. Genetic potential should be exploited through the selection and recombination in reciprocal recurrent selection to obtain high-yielding hybrids. RESUMO - O objetivo deste trabalho foi quantificar o potencial genético de progênies de irmãos germanos de milho, em uma seleção recorrente recíproca, para obtenção de híbridos com alto rendimento. O experimento foi realizado em delineamento alfa látice, com três repetições e 24 blocos. Foram avaliadas 102 progênies de irmãos germanos de milho, do cruzamento de duas populações e duas testemunhas, quanto às seguintes características: produtividade de grão, massa de sementes, número de espigas por planta, dias para a maturação, dias para o florescimento masculino, dias para o florescimento feminino, intervalo de florescimento, altura da espiga, altura da planta, posição da espiga e acamamento do caule. Os parâmetros genéticos foram estimados via REML/BLUP e análises multivariadas (rede de correlações e similaridade, agrupamento de mapa de calor e ganhos genéticos). Há variabilidade genética e agrupamentos divergentes entre as progênies de irmãos germanos de milho estudadas. A massa de sementes, o número de espigas por planta e o intervalo de florescimento são as características que mais contribuem para o melhoramento da produtividade e a divergência entre progênies de irmãos germanos de milho. O potencial genético deve ser explorado por meio de seleção e recombinação, na seleção recorrente recíproca, para a obtenção de híbridos de alto rendimento. MenosABSTRACT - The objective of this work was to quantify the genetic potential of full-sib maize progenies subjected to a reciprocal recurrent selection, in order to obtain high-yielding hybrids. The experiment was carried out in the alpha lattice design, with three replicates and 24 blocks. One hundred and two full?sib maize progenies, from the crossing of two populations and two checks, were evaluated for the following traits: grain yield, seed mass, number of ears per plant, days to maturity, days to anthesis, days to silking, anthesis-silking interval, ear height, plant height, ear position, and stem lodging. Genetic parameters were estimated through REML/BLUP and multivariate analyses (correlation and similarity network, cluster heat map, and genetic gains). There are genetic variability and divergent clusters among the studied full-sib maize progenies. Seed mass, number of ears per plant, and anthesis-silking interval are the traits that most contribute to the improvement of grain yield and divergence among the full-sib maize progenies. Genetic potential should be exploited through the selection and recombination in reciprocal recurrent selection to obtain high-yielding hybrids. RESUMO - O objetivo deste trabalho foi quantificar o potencial genético de progênies de irmãos germanos de milho, em uma seleção recorrente recíproca, para obtenção de híbridos com alto rendimento. O experimento foi realizado em delineamento alfa látice, com três repetições e 24 blocos. Foram aval... Mostrar Tudo |
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Palavras-Chave: |
REML/BLUP; Variabilidade genética. |
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Thesagro: |
Método de Análise; Milho Hibrido; Progênie; Seleção Recorrente; Zea Mays. |
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Thesaurus Nal: |
Hybrids; Recurrent selection. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1157537/1/Genetic-potential-maize-2023.pdf
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Marc: |
LEADER 03635naa a2200301 a 4500
001 2157537
005 2024-01-26
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1590/S1678-3921.pab2023.v58.03134$2DOI
100 1 $aPEDRO, C.
245 $aGenetic potential of maize full-sib progenies subjected to a reciprocal recurrent selection.$h[electronic resource]
260 $c2023
500 $aTítulo em português: Potencial genético de progênies de irmãos germanos de milho em seleção recorrente recíproca.
520 $aABSTRACT - The objective of this work was to quantify the genetic potential of full-sib maize progenies subjected to a reciprocal recurrent selection, in order to obtain high-yielding hybrids. The experiment was carried out in the alpha lattice design, with three replicates and 24 blocks. One hundred and two full?sib maize progenies, from the crossing of two populations and two checks, were evaluated for the following traits: grain yield, seed mass, number of ears per plant, days to maturity, days to anthesis, days to silking, anthesis-silking interval, ear height, plant height, ear position, and stem lodging. Genetic parameters were estimated through REML/BLUP and multivariate analyses (correlation and similarity network, cluster heat map, and genetic gains). There are genetic variability and divergent clusters among the studied full-sib maize progenies. Seed mass, number of ears per plant, and anthesis-silking interval are the traits that most contribute to the improvement of grain yield and divergence among the full-sib maize progenies. Genetic potential should be exploited through the selection and recombination in reciprocal recurrent selection to obtain high-yielding hybrids. RESUMO - O objetivo deste trabalho foi quantificar o potencial genético de progênies de irmãos germanos de milho, em uma seleção recorrente recíproca, para obtenção de híbridos com alto rendimento. O experimento foi realizado em delineamento alfa látice, com três repetições e 24 blocos. Foram avaliadas 102 progênies de irmãos germanos de milho, do cruzamento de duas populações e duas testemunhas, quanto às seguintes características: produtividade de grão, massa de sementes, número de espigas por planta, dias para a maturação, dias para o florescimento masculino, dias para o florescimento feminino, intervalo de florescimento, altura da espiga, altura da planta, posição da espiga e acamamento do caule. Os parâmetros genéticos foram estimados via REML/BLUP e análises multivariadas (rede de correlações e similaridade, agrupamento de mapa de calor e ganhos genéticos). Há variabilidade genética e agrupamentos divergentes entre as progênies de irmãos germanos de milho estudadas. A massa de sementes, o número de espigas por planta e o intervalo de florescimento são as características que mais contribuem para o melhoramento da produtividade e a divergência entre progênies de irmãos germanos de milho. O potencial genético deve ser explorado por meio de seleção e recombinação, na seleção recorrente recíproca, para a obtenção de híbridos de alto rendimento.
650 $aHybrids
650 $aRecurrent selection
650 $aMétodo de Análise
650 $aMilho Hibrido
650 $aProgênie
650 $aSeleção Recorrente
650 $aZea Mays
653 $aREML/BLUP
653 $aVariabilidade genética
700 1 $aMARÇOLA, M. A.
700 1 $aCHARIMBA, A. M.
700 1 $aQUEIROZ, L. G. C. DE
700 1 $aSOUZA, J. C. DE
773 $tPesquisa Agropecuária Brasileira$gv. 58, e03134, 2023.
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Embrapa Unidades Centrais (AI-SEDE) |
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Biblioteca(s): |
Embrapa Trigo. |
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Data corrente: |
27/07/2023 |
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Data da última atualização: |
27/07/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
FARMAN, M.; ASCARI, J. P.; RAHNAMA, M.; DEL PONTE, E.; PEDLEY, K. F.; MARTINEZ, S; FERNANDES, J. M. C.; VALENT, B. |
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Afiliação: |
MARK FARMAN, University of Kentucky; JOÃO PAULO ASCARI, Universidade Federal de Viçosa; MOSTAFA RAHNAMA, Tennessee Tech University; EMERSON DEL PONTE, Universidade Federal de Viçosa; KERRY F. PEDLEY, USDA - Agricultural Research Service; SEBASTIAN MARTINEZ, nstituto National de Investigación Agropecuaria do Uruguay; JOSE MAURICIO CUNHA FERNANDES, CNPT; BARBARA VALENT, Kansas State University. |
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Título: |
A re-evaluation of phylogenomic data reveals that current understanding in wheat blast population biology and epidemiology is obfuscated by oversights in population sampling. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Phytopathology, 24 jul. 2023. Online ahead of print |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Wheat blast, caused by the Pyricularia oryzae Triticum lineage (PoT), first emerged in Brazil and quickly spread to neighboring countries. Its recent appearance in Bangladesh and Zambia highlights a need to understand the disease's population biology and epidemiology so as to mitigate pandemic outbreaks. Current knowledge is mostly based on characterizations of Brazilian wheat blast isolates and comparison with isolates from non-wheat, endemic grasses. These foregoing studies concluded that the wheat blast population lacks host specificity and, as a result, undergoes extensive gene flow with populations infecting non-wheat hosts. Additionally, based on genetic similarity between wheat blast and isolates infecting Urochloa species, it was proposed that the disease originally emerged via a host jump from this grass, and that Urochloa likely plays a central role in wheat blast epidemiology, owing to its widespread use as a pasture grass. However, due to inconsistencies with broader phylogenetic studies, we suspected that these seminal studies hadn't actually sampled the populations normally found on endemic grasses and, instead, had repeatedly isolated members of PoT and the related Lolium pathogen lineage (PoL1). Re-analysis of the Brazilian data as part of a comprehensive, global, phylogenomic dataset that included a small number of S. American isolates sampled away from wheat confirmed our suspicion and identified four new P. oryzae lineages on grass hosts. As a result, the conclusions underpinning current understanding in wheat blast's evolution, population biology and epidemiology are unsubstantiated and could be equivocal. MenosAbstract: Wheat blast, caused by the Pyricularia oryzae Triticum lineage (PoT), first emerged in Brazil and quickly spread to neighboring countries. Its recent appearance in Bangladesh and Zambia highlights a need to understand the disease's population biology and epidemiology so as to mitigate pandemic outbreaks. Current knowledge is mostly based on characterizations of Brazilian wheat blast isolates and comparison with isolates from non-wheat, endemic grasses. These foregoing studies concluded that the wheat blast population lacks host specificity and, as a result, undergoes extensive gene flow with populations infecting non-wheat hosts. Additionally, based on genetic similarity between wheat blast and isolates infecting Urochloa species, it was proposed that the disease originally emerged via a host jump from this grass, and that Urochloa likely plays a central role in wheat blast epidemiology, owing to its widespread use as a pasture grass. However, due to inconsistencies with broader phylogenetic studies, we suspected that these seminal studies hadn't actually sampled the populations normally found on endemic grasses and, instead, had repeatedly isolated members of PoT and the related Lolium pathogen lineage (PoL1). Re-analysis of the Brazilian data as part of a comprehensive, global, phylogenomic dataset that included a small number of S. American isolates sampled away from wheat confirmed our suspicion and identified four new P. oryzae lineages on grass hosts. As a re... Mostrar Tudo |
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Palavras-Chave: |
Bioinformática; Diseases in Natural Plant Populations; Doenças em Populações de Plantas Naturais; Fungal Pathogens; Patógenos fúngicos. |
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Thesagro: |
Brucelose; Epidemiologia; Trigo. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1155353/1/A-Re-evaluation-of-Phylogenomic-Data-Reveals.pdf
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Marc: |
LEADER 02635naa a2200301 a 4500
001 2155353
005 2023-07-27
008 2023 bl uuuu u00u1 u #d
100 1 $aFARMAN, M.
245 $aA re-evaluation of phylogenomic data reveals that current understanding in wheat blast population biology and epidemiology is obfuscated by oversights in population sampling.$h[electronic resource]
260 $c2023
520 $aAbstract: Wheat blast, caused by the Pyricularia oryzae Triticum lineage (PoT), first emerged in Brazil and quickly spread to neighboring countries. Its recent appearance in Bangladesh and Zambia highlights a need to understand the disease's population biology and epidemiology so as to mitigate pandemic outbreaks. Current knowledge is mostly based on characterizations of Brazilian wheat blast isolates and comparison with isolates from non-wheat, endemic grasses. These foregoing studies concluded that the wheat blast population lacks host specificity and, as a result, undergoes extensive gene flow with populations infecting non-wheat hosts. Additionally, based on genetic similarity between wheat blast and isolates infecting Urochloa species, it was proposed that the disease originally emerged via a host jump from this grass, and that Urochloa likely plays a central role in wheat blast epidemiology, owing to its widespread use as a pasture grass. However, due to inconsistencies with broader phylogenetic studies, we suspected that these seminal studies hadn't actually sampled the populations normally found on endemic grasses and, instead, had repeatedly isolated members of PoT and the related Lolium pathogen lineage (PoL1). Re-analysis of the Brazilian data as part of a comprehensive, global, phylogenomic dataset that included a small number of S. American isolates sampled away from wheat confirmed our suspicion and identified four new P. oryzae lineages on grass hosts. As a result, the conclusions underpinning current understanding in wheat blast's evolution, population biology and epidemiology are unsubstantiated and could be equivocal.
650 $aBrucelose
650 $aEpidemiologia
650 $aTrigo
653 $aBioinformática
653 $aDiseases in Natural Plant Populations
653 $aDoenças em Populações de Plantas Naturais
653 $aFungal Pathogens
653 $aPatógenos fúngicos
700 1 $aASCARI, J. P.
700 1 $aRAHNAMA, M.
700 1 $aDEL PONTE, E.
700 1 $aPEDLEY, K. F.
700 1 $aMARTINEZ, S
700 1 $aFERNANDES, J. M. C.
700 1 $aVALENT, B
773 $tPhytopathology, 24 jul. 2023. Online ahead of print
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