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 | Acesso ao texto completo restrito à biblioteca da Embrapa Milho e Sorgo. Para informações adicionais entre em contato com cnpms.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Meio-Norte; Embrapa Milho e Sorgo. |
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Data corrente: |
28/10/2024 |
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Data da última atualização: |
16/01/2025 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BERNARDINO, K. da C.; GUILHEN, J. H. S.; MENEZES, C. B. de; TARDIN, F. D.; SCHAFERT, R. E.; BASTOS, E. A.; CARDOSO, M. J.; GAZAF, R.; ROSA, J. R. B. F.; GARCIA, A. A. F.; GUIMARÃES, C. T.; KOCHIAN, L.; PASTINA, M. M.; MAGALHAES, J. V. de. |
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Afiliação: |
KARINE DA COSTA BERNARDINO; JOSÉ HENRIQUE SOLER GUILHEN; CICERO BESERRA DE MENEZES, CNPMS; FLAVIO DESSAUNE TARDIN, CNPMS; ROBERT EUGENE SCHAFERT, CNPMS; EDSON ALVES BASTOS, CPAMN; MILTON JOSE CARDOSO, CPAMN; RODRIGO GAZAF, UNIVERSIDADE DE SAO PAULO; JOÃO RICARDO BACHEGA FEIJÓ ROSA, UNIVERSIDADE DE SAO PAULO; ANTÔNIO AUGUSTO FRANCO GARCIA, UNIVERSIDADE DE SAO PAULO; CLAUDIA TEIXEIRA GUIMARAES, CNPMS; LEON KOCHIAN, UNIVERSITY OF SASKATCHEWAN; MARIA MARTA PASTINA, CNPMS; JURANDIR VIEIRA DE MAGALHAES, CNPMS. |
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Título: |
Genetic loci associated with sorghum drought tolerance in multiple environments and their sensitivity to environmental covariables. |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
Theoretical and Applied Genetics, v. 137, article 259, 2024. |
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DOI: |
https://doi.org/10.1007/s00122-024-04761-3 |
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Idioma: |
Inglês |
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Conteúdo: |
Agriculture under an erratic climate requires tapping into a reservoir of fexible adaptive loci that can lead to lasting yield stability under multiple abiotic stress conditions. Domesticated in the hot and dry regions of Africa, sorghum is considered a harsh crop, which is adapted to important stress factors closely related to climate change. To investigate the genetic basis of drought stress adaptation in sorghum, we used a multi-environment multi-locus genome-wide association study (MEML-GWAS) in a subset of a diverse sorghum association panel (SAP) phenotyped for performance both under well-watered and water stress conditions. We selected environments in Brazil that foreshadow agriculture where both drought and temperature stresses coincide as in many tropical agricultural frontiers. Drought reduced average grain yield (Gy) by up to 50% and also afected fowering time (Ft) and plant height (Ph). We found 15 markers associated with Gy on all sorghum chromosomes except for chromosomes 7 and 9, in addition to loci associated with phenology traits. Loci associated with Gy strongly interacted with the environment in a complex way, while loci associated with phenology traits were less afected by G×E. Studying environmental covariables potentially underpinning G×E, increases in relative humidity and evapotranspiration favored and disfavored grain yield, respectively. High temperatures infuenced G×E and reduced sorghum yields, with a~100 kg ha−1 average decrease in grain yield for each unit increase in maximum temperature between 29 and 38 °C. Extreme G×E for sorghum stress resilience poses an additional challenge to breed crops for moving, erratic weather conditions. MenosAgriculture under an erratic climate requires tapping into a reservoir of fexible adaptive loci that can lead to lasting yield stability under multiple abiotic stress conditions. Domesticated in the hot and dry regions of Africa, sorghum is considered a harsh crop, which is adapted to important stress factors closely related to climate change. To investigate the genetic basis of drought stress adaptation in sorghum, we used a multi-environment multi-locus genome-wide association study (MEML-GWAS) in a subset of a diverse sorghum association panel (SAP) phenotyped for performance both under well-watered and water stress conditions. We selected environments in Brazil that foreshadow agriculture where both drought and temperature stresses coincide as in many tropical agricultural frontiers. Drought reduced average grain yield (Gy) by up to 50% and also afected fowering time (Ft) and plant height (Ph). We found 15 markers associated with Gy on all sorghum chromosomes except for chromosomes 7 and 9, in addition to loci associated with phenology traits. Loci associated with Gy strongly interacted with the environment in a complex way, while loci associated with phenology traits were less afected by G×E. Studying environmental covariables potentially underpinning G×E, increases in relative humidity and evapotranspiration favored and disfavored grain yield, respectively. High temperatures infuenced G×E and reduced sorghum yields, with a~100 kg ha−1 average decrease in grain yield fo... Mostrar Tudo |
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Palavras-Chave: |
Drought stress; Estresse hídrico; GWAS; G×E. |
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Thesagro: |
Genética Vegetal; Mudança Climática; Resistência a Seca; Sorgo; Temperatura. |
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Thesaurus Nal: |
Climate change. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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| 2. |  | VOLOSCHEN, T. D.; ROCHA-MENDES, F.; BIANCONI, G. V.; MIKICH, S. B. Inventário de mamíferos de médio e grande porte no município de São Pedro do Ivaí, estado do Paraná. In: EVENTO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA FLORESTAS, 5., 2006, Colombo. Anais. Colombo: Embrapa Florestas, 2006. 1 CD-ROM (Embrapa Florestas. Documentos, 132). EVINCI. Resumo 024.| Tipo: Resumo em Anais de Congresso |
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