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 | Acesso ao texto completo restrito à biblioteca da Embrapa Arroz e Feijão. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
08/04/2015 |
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Data da última atualização: |
21/03/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
HEINEMANN, A. B.; BARRIOS-PEREZ, C.; RAMIREZ-VILLEGAS, J.; ARANGO-LONDOÑO, D.; BONILLA-FINDJI, O.; MEDEIROS, J. C.; JARVIS, A. |
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Afiliação: |
ALEXANDRE BRYAN HEINEMANN, CNPAF; CAMILO BARRIOS-PEREZ, CIAT; JULIAN RAMIREZ-VILLEGAS, CIAT; DAVID ARANGO-LONDOÑO, CIAT; OSANA BONILLA-FINDJI, CIAT; JOÃO CARLOS MEDEIROS; ANDY JARVIS, CIAT. |
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Título: |
Variation and impact of drought-stress patterns across upland rice target population of environments in Brazil. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Journal of Experimental Botany, London, v. 66, n. 12, p. 3625-3638, June 2015. |
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DOI: |
10.1093/jxb/erv126 |
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Idioma: |
Inglês |
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Notas: |
Published online April 4, 2015. |
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Conteúdo: |
The upland rice (UR) cropped area in Brazil has decreased in the last decade. Importantly, a portion of this decrease can be attributed to the current UR breeding programme strategy, according to which direct grain yield selection is targeted primarily to the most favourable areas. New strategies for more-efficient crop breeding under non-optimal conditions are needed for Brazil?s UR regions. Such strategies should include a classification of spatio-temporal yield variations in environmental groups, as well as a determination of prevalent drought types and their characteristics (duration, intensity, phenological timing, and physiological effects) within those environmental groups. This study used a process-based crop model to support the Brazilian UR breeding programme in their efforts to adopt a new strategy that accounts for the varying range of environments where UR is currently cultivated. Crop simulations based on a commonly grown cultivar (BRS Primavera) and statistical analyses of simulated yield suggested that the target population of environments can be divided into three groups of environments: a highly favorable environment (HFE, 19% of area), a favorable environment (FE, 44%), and least favourable environment (LFE, 37%). Stress-free conditions dominated the HFE group (69% likelihood) and reproductive stress dominated the LFE group (68% likelihood), whereas reproductive and terminal drought stress were found to be almost equally likely to occur in the FE group. For the best and worst environments, we propose specific adaptation focused on the representative stress, while for the FE, wide adaptation to drought is suggested. ?Weighted selection? is also a possible strategy for the FE and LFE environment groups. MenosThe upland rice (UR) cropped area in Brazil has decreased in the last decade. Importantly, a portion of this decrease can be attributed to the current UR breeding programme strategy, according to which direct grain yield selection is targeted primarily to the most favourable areas. New strategies for more-efficient crop breeding under non-optimal conditions are needed for Brazil?s UR regions. Such strategies should include a classification of spatio-temporal yield variations in environmental groups, as well as a determination of prevalent drought types and their characteristics (duration, intensity, phenological timing, and physiological effects) within those environmental groups. This study used a process-based crop model to support the Brazilian UR breeding programme in their efforts to adopt a new strategy that accounts for the varying range of environments where UR is currently cultivated. Crop simulations based on a commonly grown cultivar (BRS Primavera) and statistical analyses of simulated yield suggested that the target population of environments can be divided into three groups of environments: a highly favorable environment (HFE, 19% of area), a favorable environment (FE, 44%), and least favourable environment (LFE, 37%). Stress-free conditions dominated the HFE group (69% likelihood) and reproductive stress dominated the LFE group (68% likelihood), whereas reproductive and terminal drought stress were found to be almost equally likely to occur in the FE group. Fo... Mostrar Tudo |
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Thesagro: |
Arroz; Deficiência hídrica; Melhoramento; Oryza sativa; Resistência a seca. |
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Thesaurus Nal: |
Breeding; Models; Rice. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02700naa a2200313 a 4500
001 2012946
005 2016-03-21
008 2015 bl uuuu u00u1 u #d
024 7 $a10.1093/jxb/erv126$2DOI
100 1 $aHEINEMANN, A. B.
245 $aVariation and impact of drought-stress patterns across upland rice target population of environments in Brazil.$h[electronic resource]
260 $c2015
500 $aPublished online April 4, 2015.
520 $aThe upland rice (UR) cropped area in Brazil has decreased in the last decade. Importantly, a portion of this decrease can be attributed to the current UR breeding programme strategy, according to which direct grain yield selection is targeted primarily to the most favourable areas. New strategies for more-efficient crop breeding under non-optimal conditions are needed for Brazil?s UR regions. Such strategies should include a classification of spatio-temporal yield variations in environmental groups, as well as a determination of prevalent drought types and their characteristics (duration, intensity, phenological timing, and physiological effects) within those environmental groups. This study used a process-based crop model to support the Brazilian UR breeding programme in their efforts to adopt a new strategy that accounts for the varying range of environments where UR is currently cultivated. Crop simulations based on a commonly grown cultivar (BRS Primavera) and statistical analyses of simulated yield suggested that the target population of environments can be divided into three groups of environments: a highly favorable environment (HFE, 19% of area), a favorable environment (FE, 44%), and least favourable environment (LFE, 37%). Stress-free conditions dominated the HFE group (69% likelihood) and reproductive stress dominated the LFE group (68% likelihood), whereas reproductive and terminal drought stress were found to be almost equally likely to occur in the FE group. For the best and worst environments, we propose specific adaptation focused on the representative stress, while for the FE, wide adaptation to drought is suggested. ?Weighted selection? is also a possible strategy for the FE and LFE environment groups.
650 $aBreeding
650 $aModels
650 $aRice
650 $aArroz
650 $aDeficiência hídrica
650 $aMelhoramento
650 $aOryza sativa
650 $aResistência a seca
700 1 $aBARRIOS-PEREZ, C.
700 1 $aRAMIREZ-VILLEGAS, J.
700 1 $aARANGO-LONDOÑO, D.
700 1 $aBONILLA-FINDJI, O.
700 1 $aMEDEIROS, J. C.
700 1 $aJARVIS, A.
773 $tJournal of Experimental Botany, London$gv. 66, n. 12, p. 3625-3638, June 2015.
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Embrapa Arroz e Feijão (CNPAF) |
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| 11. |  | COSTA, I. R. S.; PERIM, S. Comportamento de variedades de mandioca (Manihot esculenta, Crantz), em tres epocas de colheita, nas condicoes de cerrados. In: CONGRESSO BRASILEIRO DE MANDIOCA, 3., 1983, Brasilia, DF. Resumos... Brasilia: Sociedade Brasileira de Mandioca, 1983. p.19.| Biblioteca(s): Embrapa Cerrados. |
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| 15. | | COSTA, L. R. de M.; COSTA, I. R. S. Documentação e informatização de recursos genéticos. In: TALENTO Estudantil da Embrapa Recursos Genéticos e Biotecnologia 1998: resumo dos trabalhos. Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 1998. p. 51. (Embrapa Recursos Genéticos e Biotecnologia. Documentos, 34).| Tipo: Resumo em Anais de Congresso | Circulação/Nível: -- - -- |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 17. | | PERIM, S.; COSTA, I. R. S.; TAKATSU, A. Mandioca. In: EMBRAPA. Centro de Pesquisa Agropecuaria dos Cerrados (Planaltina, DF). Relatorio tecnico anual do Centro de Pesquisa Agropecuaria dos Cerrados 1982/1985. Planaltina, 1987. p.318-326.| Biblioteca(s): Embrapa Cerrados. |
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| Registros recuperados : 91 | |
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