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Registro Completo |
Biblioteca(s): |
Embrapa Arroz e Feijão. |
Data corrente: |
05/12/2018 |
Data da última atualização: |
12/02/2020 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
HEINEMANN, A. B.; RAMIREZ-VILLEGAS, J.; REBOLLEDO, M. C.; COSTA NETO, G. M. F.; CASTRO, A. P. de. |
Afiliação: |
ALEXANDRE BRYAN HEINEMANN, CNPAF; JULIAN RAMIREZ-VILLEGAS, CIAT; MARIA CAMILA REBOLLEDO, CIAT; GERMANO MARTINS F. COSTA NETO, UFG; ADRIANO PEREIRA DE CASTRO, CNPAF. |
Título: |
Upland rice breeding led to increased drought sensitivity in Brazil. |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
Field Crops Research, v. 231, p. 57-67, 2019. |
ISSN: |
0378-4290 |
DOI: |
10.1016/j.fcr.2018.11.009 |
Idioma: |
Inglês |
Conteúdo: |
The upland rice (UR) crop system located in the Brazilian savannas (states of Mato Grosso, Rondônia, Tocantins and Goiás) is the main upland rice growing area of Brazil and the largest rainfed rice growing area in Latin America. It plays an important social and economic role in central Brazil. UR cropped area, however, has decreased by 70% in the last two decades, partly due to high drought risk. Here, we hypothesize that the UR breeding program?s focus on direct grain selection for wide adaptation has led to an increase in yield potential but a reduction in the capacity of modern cultivars to maintain yield under drought stress. Using the ORYZAv3 rice crop model, we analyzed changes in relative and absolute drought impact for cultivars representative of three decades of breeding: 1980s (1986?1992), 1990s (1993?2002), and 2000s (2003?2013). We found a mean increase in relative drought impact of 12% (0.35% per year) between 1980s and 2000s. Most of the increase occurred during 1980s and 1990s (7%), where a major shift from landraces (i.e. Douradão) to modern cultivars (i.e. cv. BRS Primavera) occurred in the breeding program. Drought adaptation traits such as greater root length density, shorter cycle, and lower stomatal sensitivity to drought have been systematically bred out of the UR material in the period 1980?2013. We recommend the UR breeding program to be adjusted by better targeting to specific drought environments, and by taking into account drought stress profiles and environmental co-variables in statistical analyses for genotype selection. Moreover, physiological studies on tradeoffs between yield potential and drought tolerance should be performed for each target environment to dissect plant traits that confer both high yield potential and low drought sensitivity. These strategies will ultimately ensure that newly released cultivars are adapted to the environmental conditions of the study region, therefore reducing agroclimatic risk for UR farmers. MenosThe upland rice (UR) crop system located in the Brazilian savannas (states of Mato Grosso, Rondônia, Tocantins and Goiás) is the main upland rice growing area of Brazil and the largest rainfed rice growing area in Latin America. It plays an important social and economic role in central Brazil. UR cropped area, however, has decreased by 70% in the last two decades, partly due to high drought risk. Here, we hypothesize that the UR breeding program?s focus on direct grain selection for wide adaptation has led to an increase in yield potential but a reduction in the capacity of modern cultivars to maintain yield under drought stress. Using the ORYZAv3 rice crop model, we analyzed changes in relative and absolute drought impact for cultivars representative of three decades of breeding: 1980s (1986?1992), 1990s (1993?2002), and 2000s (2003?2013). We found a mean increase in relative drought impact of 12% (0.35% per year) between 1980s and 2000s. Most of the increase occurred during 1980s and 1990s (7%), where a major shift from landraces (i.e. Douradão) to modern cultivars (i.e. cv. BRS Primavera) occurred in the breeding program. Drought adaptation traits such as greater root length density, shorter cycle, and lower stomatal sensitivity to drought have been systematically bred out of the UR material in the period 1980?2013. We recommend the UR breeding program to be adjusted by better targeting to specific drought environments, and by taking into account drought stress profiles a... Mostrar Tudo |
Palavras-Chave: |
Traditional and modern genotypes. |
Thesagro: |
Arroz; Genótipo; Melhoramento Genético Vegetal; Oryza Sativa; Resistência a Seca. |
Thesaurus Nal: |
Breeding methods; Crop models; Rice. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
Marc: |
LEADER 02864naa a2200301 a 4500 001 2100803 005 2020-02-12 008 2019 bl uuuu u00u1 u #d 022 $a0378-4290 024 7 $a10.1016/j.fcr.2018.11.009$2DOI 100 1 $aHEINEMANN, A. B. 245 $aUpland rice breeding led to increased drought sensitivity in Brazil.$h[electronic resource] 260 $c2019 520 $aThe upland rice (UR) crop system located in the Brazilian savannas (states of Mato Grosso, Rondônia, Tocantins and Goiás) is the main upland rice growing area of Brazil and the largest rainfed rice growing area in Latin America. It plays an important social and economic role in central Brazil. UR cropped area, however, has decreased by 70% in the last two decades, partly due to high drought risk. Here, we hypothesize that the UR breeding program?s focus on direct grain selection for wide adaptation has led to an increase in yield potential but a reduction in the capacity of modern cultivars to maintain yield under drought stress. Using the ORYZAv3 rice crop model, we analyzed changes in relative and absolute drought impact for cultivars representative of three decades of breeding: 1980s (1986?1992), 1990s (1993?2002), and 2000s (2003?2013). We found a mean increase in relative drought impact of 12% (0.35% per year) between 1980s and 2000s. Most of the increase occurred during 1980s and 1990s (7%), where a major shift from landraces (i.e. Douradão) to modern cultivars (i.e. cv. BRS Primavera) occurred in the breeding program. Drought adaptation traits such as greater root length density, shorter cycle, and lower stomatal sensitivity to drought have been systematically bred out of the UR material in the period 1980?2013. We recommend the UR breeding program to be adjusted by better targeting to specific drought environments, and by taking into account drought stress profiles and environmental co-variables in statistical analyses for genotype selection. Moreover, physiological studies on tradeoffs between yield potential and drought tolerance should be performed for each target environment to dissect plant traits that confer both high yield potential and low drought sensitivity. These strategies will ultimately ensure that newly released cultivars are adapted to the environmental conditions of the study region, therefore reducing agroclimatic risk for UR farmers. 650 $aBreeding methods 650 $aCrop models 650 $aRice 650 $aArroz 650 $aGenótipo 650 $aMelhoramento Genético Vegetal 650 $aOryza Sativa 650 $aResistência a Seca 653 $aTraditional and modern genotypes 700 1 $aRAMIREZ-VILLEGAS, J. 700 1 $aREBOLLEDO, M. C. 700 1 $aCOSTA NETO, G. M. F. 700 1 $aCASTRO, A. P. de 773 $tField Crops Research$gv. 231, p. 57-67, 2019.
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Embrapa Arroz e Feijão (CNPAF) |
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Registros recuperados : 12 | |
5. | | HEINEMANN, A. B.; RAMIREZ-VILLEGAS, J.; NASCENTE, A. S.; ZEVIANI, W. M.; STONE, L. F.; SENTELHAS, P. C. Upland rice cultivar responses to row spacing and water stress across multiple environments. Experimental Agriculture, Cambridge, v. 53, n. 4, p. 609-626, 2017.Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
Biblioteca(s): Embrapa Arroz e Feijão. |
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6. | | HEINEMANN, A. B.; BARRIOS-PEREZ, C.; RAMIREZ-VILLEGAS, J.; ARANGO-LONDOÑO, D.; BONILLA-FINDJI, O.; MEDEIROS, J. C.; JARVIS, A. Variation and impact of drought-stress patterns across upland rice target population of environments in Brazil. Journal of Experimental Botany, London, v. 66, n. 12, p. 3625-3638, June 2015. Published online April 4, 2015.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
Biblioteca(s): Embrapa Arroz e Feijão. |
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7. | | RAMIREZ-VILLEGAS, J.; HEINEMANN, A. B.; CASTRO, A. P. de; BRESEGHELLO, F.; NAVARRO-RACINES, C.; LI, T.; REBOLLEDO, M. C.; CHALLINOR, A. J. Breeding implications of drought stress under future climate for upland rice in Brazil. Global Change Biology, v. 24, n. 5, p. 2035-2050, May 2018.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
Biblioteca(s): Embrapa Arroz e Feijão. |
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8. | | HEINEMANN, A. B.; RAMIREZ-VILLEGAS, J.; STONE, L. F.; SILVA, A. P. G. A.; MATTA, D. H. da; DIAZ, M. E. P. The impact of El Niño Southern Oscillation on cropping season rainfall variability across Central Brazil. International Journal of Climatology, v. 41, n. S1, p. E283-E304, Jan. 2021.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
Biblioteca(s): Embrapa Arroz e Feijão. |
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9. | | HEINEMANN, A. B.; RAMIREZ-VILLEGAS, J.; SOUZA, T. L. P. O.; DIDONET, A. D.; DI STEFANO, J. G.; BOOTE, K. J.; JARVIS, A. Drought impact on rainfed common bean production areas in Brazil. Agricultural and Forest Meteorology, Amsterdam, v. 225, p. 57-74, Sept. 2016.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
Biblioteca(s): Embrapa Arroz e Feijão. |
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10. | | ARENAS-CALLE, L. N.; HEINEMANN, A. B.; SILVA, M. A. S. da; SANTOS, A. B. dos; RAMIREZ-VILLEGAS, J.; WHITFIELD, S.; CHALLINOR, A. J. Rice management decisions using process-based models with climate-smart indicators. Frontiers in Sustainable Food Systems, v. 6, article 873957, Jul. 2022.Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
Biblioteca(s): Embrapa Arroz e Feijão. |
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11. | | REBOLLEDO-CID, M. C.; RAMÍREZ-VILLEGAS, J.; GRATEROL-MATUTE, E.; HERNÁNDEZ-VARELA, C. A.; RODRÍGUEZ-ESPINOZA, J.; PETRO-PÁEZ, E. H.; PINZÓN, S.; HEINEMANN, A. B.; RODRÍGUEZ-BAIDE, J. M.; VAN DEN BERG, M. Modelación del arroz en Latinoamérica: estado del arte y base de datos para parametrización. Luxembourg: Publications Office of the European Union, 2018. 62 p. (Series de Estudios Temáticos EUROCLIMA Acción de Modelación Biofísica de Cultivos). EUR 29026 ESTipo: Autoria/Organização/Edição de Livros |
Biblioteca(s): Embrapa Arroz e Feijão. |
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12. | | RAMIREZ-VILLEGAS, J.; MOLERO MILAN, A.; ALEXANDROV, N.; ASSENG, S.; CHALLINOR, A. J.; CROSSA, J.; VAN EEUWIJK, F.; GHANEM, M. E.; GRENIER, C.; HEINEMANN, A. B.; WANG, J.; JULIANA, P.; KEHEL, Z.; KHOLOVA, J; KOO, J.; PEQUENO, D.; QUIROZ, R.; REBOLLEDO, M. C.; SUKUMARAN, S.; VADEZ, V.; WHITE, J. W.; REYNOLDS, M. CGIAR modeling approaches for resource-constrained scenarios: I. Accelerating crop breeding for a changing climate. Crop Science, 2020. Online Version of Record before inclusion in an issue.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
Biblioteca(s): Embrapa Arroz e Feijão. |
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Registros recuperados : 12 | |
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Nenhum registro encontrado para a expressão de busca informada. |
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