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Registro Completo |
Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
24/07/2012 |
Data da última atualização: |
28/09/2017 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
SOUSA, S. M. de; CLARK, R. T.; MENDES, F. F.; OLIVEIRA, A. C. de; VASCONCELOS, M. J. V. de; PARENTONI, S. N.; KOCHIAN, L. V.; GUIMARAES, C. T.; MAGALHAES, J. V. |
Afiliação: |
SYLVIA MORAIS DE SOUSA, CNPMS; ANTONIO CARLOS DE OLIVEIRA, CNPMS; MARIA JOSE VILACA DE VASCONCELOS, CNPMS; SIDNEY NETTO PARENTONI, CNPMS; CLAUDIA TEIXEIRA GUIMARAES, CNPMS; JURANDIR VIEIRA DE MAGALHAES, CNPMS. |
Título: |
A role for root morphology and related candidate genes in P acquisition efficiency in maize. |
Ano de publicação: |
2012 |
Fonte/Imprenta: |
Functional Plant Biology, Victoria, v. 39, n. 11, p. 925-935, 2012. |
DOI: |
10.1071/FP12022 |
Idioma: |
Inglês |
Conteúdo: |
Phosphorus (P) is an essential nutrient for plants and is acquired from the rhizosphere solution as inorganic phosphate. P is one of the least available mineral nutrients, particularly in highly weathered, tropical soils, and can substantially limit plant growth. The aim of this work was to study a possible effect of root morphology and the expression pattern of related candidate genes on P efficiency in maize. Our field phenotyping results under low and high P conditions enabled us to identify two contrasting genotypes for P acquisition efficiency that were used for the root traits studies. Root morphology was assessed in a paper pouch system to investigate root traits that could be involved in P acquisition efficiency. The genes, Rtcs, Bk2 and Rth3, which are known to be involved in root morphology, showed higher expression in the P efficient line relative to the P inefficient line. Overall, root traits showed high heritability and a low coefficient of variation. Principal component analysis revealed that out of the 24 root traits analysed, only four root traits were needed to adequately represent the diversity among genotypes. The information generated by this study will be useful for establishing early selection strategies for P efficiency in maize, which are needed to support subsequent molecular and physiological studies. |
Thesagro: |
Milho; Zea Mays. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02106naa a2200253 a 4500 001 1929011 005 2017-09-28 008 2012 bl uuuu u00u1 u #d 024 7 $a10.1071/FP12022$2DOI 100 1 $aSOUSA, S. M. de 245 $aA role for root morphology and related candidate genes in P acquisition efficiency in maize.$h[electronic resource] 260 $c2012 520 $aPhosphorus (P) is an essential nutrient for plants and is acquired from the rhizosphere solution as inorganic phosphate. P is one of the least available mineral nutrients, particularly in highly weathered, tropical soils, and can substantially limit plant growth. The aim of this work was to study a possible effect of root morphology and the expression pattern of related candidate genes on P efficiency in maize. Our field phenotyping results under low and high P conditions enabled us to identify two contrasting genotypes for P acquisition efficiency that were used for the root traits studies. Root morphology was assessed in a paper pouch system to investigate root traits that could be involved in P acquisition efficiency. The genes, Rtcs, Bk2 and Rth3, which are known to be involved in root morphology, showed higher expression in the P efficient line relative to the P inefficient line. Overall, root traits showed high heritability and a low coefficient of variation. Principal component analysis revealed that out of the 24 root traits analysed, only four root traits were needed to adequately represent the diversity among genotypes. The information generated by this study will be useful for establishing early selection strategies for P efficiency in maize, which are needed to support subsequent molecular and physiological studies. 650 $aMilho 650 $aZea Mays 700 1 $aCLARK, R. T. 700 1 $aMENDES, F. F. 700 1 $aOLIVEIRA, A. C. de 700 1 $aVASCONCELOS, M. J. V. de 700 1 $aPARENTONI, S. N. 700 1 $aKOCHIAN, L. V. 700 1 $aGUIMARAES, C. T. 700 1 $aMAGALHAES, J. V. 773 $tFunctional Plant Biology, Victoria$gv. 39, n. 11, p. 925-935, 2012.
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Registros recuperados : 387 | |
1. | | GUIMARAES, C. T. Aplicação de marcadores moleculares no melhoramento genético In: CONGRESSO NACIONAL DE MILHO E SORGO, 25.; SIMPOSIO BRASILEIRO SOBRE A LAGARTA-DO-CARTUCHO, SPODOPTERA FRUGIPERDA, 1., 2004, Cuiabá, MT. Da agricultura familiar ao agronegócio: tecnologia, competitividade e sustentabilidade: [palestras]. Sete Lagoas: ABMS: Embrapa Milho e Sorgo; Cuiabá: Empaer, 2004. 1 CD-ROM.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Milho e Sorgo. |
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3. | | GUIMARAES, C. T. Genoma milho: o estado da arte. In: CONGRESSO NACIONAL DE MILHO E SORGO, 24., 2002, Florianópolis, SC. Meio ambiente e a nova agenda para o agronegócio de milho e sorgo: [palestras]. Sete Lagoas: ABMS: Embrapa Milho e Sorgo; Florianópolis: Epagri, 2002.Biblioteca(s): Embrapa Milho e Sorgo. |
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20. | | DUARTE, J. M.; PACHECO, C. A. P.; GUIMARAES, C. T.; PAIVA, E. Avaliação de híbridos de milho de alta qualidade protéica (QPM) obtidos pela conversão de linhagens elites normais. In: CONGRESSO NACIONAL DE MILHO E SORGO, 25.; SIMPOSIO BRASILEIRO SOBRE A LAGARTA-DO-CARTUCHO, SPODOPTERA FRUGIPERDA, 1., 2004, Cuiabá, MT. Da agricultura familiar ao agronegócio: tecnologia, competitividade e sustentabilidade: [resumos expandidos]. Sete Lagoas: ABMS: Embrapa Milho e Sorgo; Cuiabá: Empaer, 2004. 1 CD-ROM.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Milho e Sorgo. |
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Registros recuperados : 387 | |
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