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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
08/06/1998 |
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Data da última atualização: |
08/06/1998 |
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Autoria: |
BAHIA FILHO, A. F. C.; MAGNAVACA, R.; SCHAFFERT, R. E.; ALVES, V. M. C. |
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Título: |
Identification, utilization, and economic impact of maize germplasm tolerant to low levels of phosphorus and toxic levels of exchangeable aluminum in Brazilian soils. |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
In: MONIZ, A.C.; FURLANI, A.M.C.; SCHAFFERT, R.E.; FAGERIA, N.K.; ROSOLEM, C.A.; CANTARELLA, H., ed. Plant-soil interactions at low pH: sustainable agriculture and forestry production. Campinas: Brazilian Soil Science Society, 1997. |
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Páginas: |
p.59-70. |
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Idioma: |
Inglês |
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Notas: |
Trabalho apresentado no "Fourth International Symposium on Plant-Soil Interactions at low pH, Belo Horizonte, MG, Brazil, Mar. 1996". |
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Conteúdo: |
A historical review of research and development related to the identification, utilization and economic impact of maize germplasm adapted to acid soils at EMBRAPA/CNPMS is presented. Methods to identify tolerant germplasm and to select segregating materials, through field experiments in acid and fertile soils and screening in nutrient solution are discussed. Results of research including inheritance for aluminum tolerance and development of high yielding tolerant hybrids are presented. Also, results of phosphorus efficiency related to root development, internal accumulation of P and kinetics of absorption of P and N are discussed. The experience accumulated in this research program has shown that adaptation to acid can be associated, in the same genotype with high yield potential and yield stability, as result of tolerance to Al toxicity and improved P use efficiency. This program has generated several commercial cultivars which have been successfully utilized in a large area of Brasil. The knowledge and experimental germplasm generated are also valuable resources which are being used to support basic studies of mechanisms of tolerance to aluminum and nutrient use efficiency. A better understanding of these mechanisms will help the development of better strategies for selection and improved cultivars in the future. |
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Palavras-Chave: |
Aluminium; Aspecto economico; Brasil; Economic situation; Maize. |
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Thesagro: |
Alumínio; Cerrado; Fósforo; Genética Vegetal; Germoplasma; Milho; Solo Ácido; Toxidez. |
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Thesaurus Nal: |
acid soils; Brazil; genetics; germplasm; phosphorus; toxicity. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02740naa a2200409 a 4500
001 1554272
005 1998-06-08
008 1997 bl uuuu u00u1 u #d
100 1 $aBAHIA FILHO, A. F. C.
245 $aIdentification, utilization, and economic impact of maize germplasm tolerant to low levels of phosphorus and toxic levels of exchangeable aluminum in Brazilian soils.
260 $c1997
300 $ap.59-70.
500 $aTrabalho apresentado no "Fourth International Symposium on Plant-Soil Interactions at low pH, Belo Horizonte, MG, Brazil, Mar. 1996".
520 $aA historical review of research and development related to the identification, utilization and economic impact of maize germplasm adapted to acid soils at EMBRAPA/CNPMS is presented. Methods to identify tolerant germplasm and to select segregating materials, through field experiments in acid and fertile soils and screening in nutrient solution are discussed. Results of research including inheritance for aluminum tolerance and development of high yielding tolerant hybrids are presented. Also, results of phosphorus efficiency related to root development, internal accumulation of P and kinetics of absorption of P and N are discussed. The experience accumulated in this research program has shown that adaptation to acid can be associated, in the same genotype with high yield potential and yield stability, as result of tolerance to Al toxicity and improved P use efficiency. This program has generated several commercial cultivars which have been successfully utilized in a large area of Brasil. The knowledge and experimental germplasm generated are also valuable resources which are being used to support basic studies of mechanisms of tolerance to aluminum and nutrient use efficiency. A better understanding of these mechanisms will help the development of better strategies for selection and improved cultivars in the future.
650 $aacid soils
650 $aBrazil
650 $agenetics
650 $agermplasm
650 $aphosphorus
650 $atoxicity
650 $aAlumínio
650 $aCerrado
650 $aFósforo
650 $aGenética Vegetal
650 $aGermoplasma
650 $aMilho
650 $aSolo Ácido
650 $aToxidez
653 $aAluminium
653 $aAspecto economico
653 $aBrasil
653 $aEconomic situation
653 $aMaize
700 1 $aMAGNAVACA, R.
700 1 $aSCHAFFERT, R. E.
700 1 $aALVES, V. M. C.
773 $tIn: MONIZ, A.C.; FURLANI, A.M.C.; SCHAFFERT, R.E.; FAGERIA, N.K.; ROSOLEM, C.A.; CANTARELLA, H., ed. Plant-soil interactions at low pH: sustainable agriculture and forestry production. Campinas: Brazilian Soil Science Society, 1997.
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