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Registro Completo |
Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
23/01/2006 |
Data da última atualização: |
29/05/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
NINAMANGO-CARDENAS, F. E.; GUIMARAES, C. T.; MARTINS, P. R.; PARENTONI, S. N.; CARNEIRO, N. P.; LOPES, M. A.; MORO, J. R.; PAIVA, E. |
Afiliação: |
CLAUDIA TEIXEIRA GUIMARAES, CNPMS; SIDNEY NETTO PARENTONI, CNPMS; NEWTON PORTILHO CARNEIRO, CNPMS. |
Título: |
Mapping QTLs for aluminum tolerance in maize. |
Ano de publicação: |
2003 |
Fonte/Imprenta: |
Euphytica, Wageningen, v. 130, n. 2 p. 223-232, 2003. |
Idioma: |
Inglês |
Conteúdo: |
Aluminum toxicity is one of the major constraints for plant development in acid soils, limiting food production in many countries. Cultivars genetically adapted to acid soils may offer an environmental compatible solution, providing a sustainable agriculture system. The aim of this work was to identify genomic regions associated with Al tolerance in maize, and to quantify the genetic effects on the phenotypic variation. A population of 168 F3:4 families derived from a cross between two contrasting maize inbred lines for Al tolerance was evaluated using the NSRL and RSRL parameters in nutrient solution containing toxic level of aluminum. Variance analyses indicated that the NSRL was the most reliable phenotypic index to measure Al tolerance in the population, being used for further QTL mapping analysis. RFLP and SSR markers were selected for bulked segregant analysis, and additional SSR markers, flanking the polymorphisms of interest, were chosen in order to saturate the putative target regions. Seven linkage groups were constructed using 17 RFLP and 34 SSR markers. Five QTLs were mapped on chromosomes 2, 6 and 8, explaining 60% of the phenotypic variation. QTL4 and marker umc043 were located on chromosomes 8 and 5, close to genes encoding for enzymes involved in the organic acids synthesis pathways, a widely proposed mechanism for Al tolerance in plants. QTL2 was mapped in the same region as Alm2, also associated with Al tolerance in maize. In addition, dominant and additive effects were important in the control of this trait in maize.. MenosAluminum toxicity is one of the major constraints for plant development in acid soils, limiting food production in many countries. Cultivars genetically adapted to acid soils may offer an environmental compatible solution, providing a sustainable agriculture system. The aim of this work was to identify genomic regions associated with Al tolerance in maize, and to quantify the genetic effects on the phenotypic variation. A population of 168 F3:4 families derived from a cross between two contrasting maize inbred lines for Al tolerance was evaluated using the NSRL and RSRL parameters in nutrient solution containing toxic level of aluminum. Variance analyses indicated that the NSRL was the most reliable phenotypic index to measure Al tolerance in the population, being used for further QTL mapping analysis. RFLP and SSR markers were selected for bulked segregant analysis, and additional SSR markers, flanking the polymorphisms of interest, were chosen in order to saturate the putative target regions. Seven linkage groups were constructed using 17 RFLP and 34 SSR markers. Five QTLs were mapped on chromosomes 2, 6 and 8, explaining 60% of the phenotypic variation. QTL4 and marker umc043 were located on chromosomes 8 and 5, close to genes encoding for enzymes involved in the organic acids synthesis pathways, a widely proposed mechanism for Al tolerance in plants. QTL2 was mapped in the same region as Alm2, also associated with Al tolerance in maize. In addition, dominant and additive... Mostrar Tudo |
Palavras-Chave: |
chromosomes-; Cromossomo; Mapeamento genético. |
Thesagro: |
Alumínio; Genética; Marcador Genético; Milho. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02333naa a2200289 a 4500 001 1489128 005 2018-05-29 008 2003 bl uuuu u00u1 u #d 100 1 $aNINAMANGO-CARDENAS, F. E. 245 $aMapping QTLs for aluminum tolerance in maize.$h[electronic resource] 260 $c2003 520 $aAluminum toxicity is one of the major constraints for plant development in acid soils, limiting food production in many countries. Cultivars genetically adapted to acid soils may offer an environmental compatible solution, providing a sustainable agriculture system. The aim of this work was to identify genomic regions associated with Al tolerance in maize, and to quantify the genetic effects on the phenotypic variation. A population of 168 F3:4 families derived from a cross between two contrasting maize inbred lines for Al tolerance was evaluated using the NSRL and RSRL parameters in nutrient solution containing toxic level of aluminum. Variance analyses indicated that the NSRL was the most reliable phenotypic index to measure Al tolerance in the population, being used for further QTL mapping analysis. RFLP and SSR markers were selected for bulked segregant analysis, and additional SSR markers, flanking the polymorphisms of interest, were chosen in order to saturate the putative target regions. Seven linkage groups were constructed using 17 RFLP and 34 SSR markers. Five QTLs were mapped on chromosomes 2, 6 and 8, explaining 60% of the phenotypic variation. QTL4 and marker umc043 were located on chromosomes 8 and 5, close to genes encoding for enzymes involved in the organic acids synthesis pathways, a widely proposed mechanism for Al tolerance in plants. QTL2 was mapped in the same region as Alm2, also associated with Al tolerance in maize. In addition, dominant and additive effects were important in the control of this trait in maize.. 650 $aAlumínio 650 $aGenética 650 $aMarcador Genético 650 $aMilho 653 $achromosomes- 653 $aCromossomo 653 $aMapeamento genético 700 1 $aGUIMARAES, C. T. 700 1 $aMARTINS, P. R. 700 1 $aPARENTONI, S. N. 700 1 $aCARNEIRO, N. P. 700 1 $aLOPES, M. A. 700 1 $aMORO, J. R. 700 1 $aPAIVA, E. 773 $tEuphytica, Wageningen$gv. 130, n. 2 p. 223-232, 2003.
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Embrapa Milho e Sorgo (CNPMS) |
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Registros recuperados : 4 | |
1. | | PEIXOTO, E. L. T. Polpa cítrica em dietas para cordeiros. 2011. 35 f. Dissertação (Mestrado em Ciências) - Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ. Orientador: Mirton José Frota Morenz, Embrapa Gado de Leite; Co-orientador: Fernando César Ferraz Lopes, Embrapa Gado de Leite.Tipo: Orientação de Tese de Pós-Graduação |
Biblioteca(s): Embrapa Gado de Leite. |
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3. | | LIMA, K. R. de; PEIXOTO, E. L. T; BOTELHO, F. M.; BADARÓ, E. M.; LOPES, F. C. F.; MORENZ, M. J. F. Parâmetros ruminais em ovinos alimentados com diferentes níveis de inclusão de polpa cítrica peletizada. In: ZOOTEC NA AMAZÔNIA LEGAL, 1.; CONGRESSO BRASILEIRO DE ZOOTECNIA, 20., 2010, Palmas. Sustentabilidade e produção animal: anais. Palmas: UFT: ABZ, 2010. 3 p.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Gado de Leite. |
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4. | | PEIXOTO, E. L. T.; MORENZ, M. J. F.; FONSECA, C. E. M. da; MOURA, E. dos S.; LIMA, K. R. de; LOPES, F. C. F.; CABRAL, L. da S. Citrus pulp in lamb diets: intake, digestibility, and ruminal parameters. Semina: Ciências Agrárias, v. 36, n. 5, p. 3421-3430, 2015.Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
Biblioteca(s): Embrapa Gado de Leite. |
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Registros recuperados : 4 | |
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Nenhum registro encontrado para a expressão de busca informada. |
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