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| Registros recuperados : 231 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
01/02/1996 |
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Data da última atualização: |
01/02/1996 |
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Autoria: |
SPEHAR, C. R. |
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Título: |
Impact of strategic genes in soybean on agricultural development in the Brazilian tropical savannahs. |
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Ano de publicação: |
1995 |
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Fonte/Imprenta: |
Field Crops Research, Amsterdam, v.41, p.141-146, 1995. |
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Idioma: |
Inglês |
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Conteúdo: |
The cerrados of Brazil are typical of low-latitude tropical savannah areas in which agriculture is limited by low soil fertility and pH and high concentrations of aluminium. Since the 1960s, the traditional extensive cattle ranching has shifted to agriculture with the cultivation of rain-fed rice and, more recently, soybean (Glycine max (L.) Merrill). Introduction of soybean into these areas has depended on selection of cultivars carrying strategic genes determining a few key characteristics, principally late maturity, high aluminium tolerance and calcium-use efficiency. The methods used in developing adapted varieties are reviewed. Identification of the long-juvenile character and selection of genotypes in which this stage is prolonged are identified as keys inthe systematic exploitation of plant yield potential. New screening techniques reveal that these savannah-adapted genotypes also carry genes for high-Al and low-Ca tolerances, which allow deep rooting of plants and, consequently, drought tolerance. The conjugation of these favourable characters is essential to the development of sustainable agriculture in the cerrados. |
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Palavras-Chave: |
Agricultural development; Aluminium; Maturity; Tolerance; Tolerancia. |
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Thesagro: |
Alumínio; Cálcio; Cerrado; Desenvolvimento Agrícola; Fertilidade do Solo; Glycine Max; Maturação; Melhoramento Genético Vegetal; Soja. |
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Thesaurus NAL: |
calcium; plant breeding; soil fertility; soybeans. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02055naa a2200337 a 4500
001 1550819
005 1996-02-01
008 1995 bl --- 0-- u #d
100 1 $aSPEHAR, C. R.
245 $aImpact of strategic genes in soybean on agricultural development in the Brazilian tropical savannahs.
260 $c1995
520 $aThe cerrados of Brazil are typical of low-latitude tropical savannah areas in which agriculture is limited by low soil fertility and pH and high concentrations of aluminium. Since the 1960s, the traditional extensive cattle ranching has shifted to agriculture with the cultivation of rain-fed rice and, more recently, soybean (Glycine max (L.) Merrill). Introduction of soybean into these areas has depended on selection of cultivars carrying strategic genes determining a few key characteristics, principally late maturity, high aluminium tolerance and calcium-use efficiency. The methods used in developing adapted varieties are reviewed. Identification of the long-juvenile character and selection of genotypes in which this stage is prolonged are identified as keys inthe systematic exploitation of plant yield potential. New screening techniques reveal that these savannah-adapted genotypes also carry genes for high-Al and low-Ca tolerances, which allow deep rooting of plants and, consequently, drought tolerance. The conjugation of these favourable characters is essential to the development of sustainable agriculture in the cerrados.
650 $acalcium
650 $aplant breeding
650 $asoil fertility
650 $asoybeans
650 $aAlumínio
650 $aCálcio
650 $aCerrado
650 $aDesenvolvimento Agrícola
650 $aFertilidade do Solo
650 $aGlycine Max
650 $aMaturação
650 $aMelhoramento Genético Vegetal
650 $aSoja
653 $aAgricultural development
653 $aAluminium
653 $aMaturity
653 $aTolerance
653 $aTolerancia
773 $tField Crops Research, Amsterdam$gv.41, p.141-146, 1995.
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