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Registro Completo |
Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
01/02/1996 |
Data da última atualização: |
01/02/1996 |
Autoria: |
SPEHAR, C. R. |
Título: |
Impact of strategic genes in soybean on agricultural development in the Brazilian tropical savannahs. |
Ano de publicação: |
1995 |
Fonte/Imprenta: |
Field Crops Research, Amsterdam, v.41, p.141-146, 1995. |
Idioma: |
Inglês |
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. |
Palavras-Chave: |
Agricultural development; Aluminium; Maturity; Tolerance; Tolerancia. |
Thesagro: |
Alumínio; Cálcio; Cerrado; Desenvolvimento Agrícola; Fertilidade do Solo; Glycine Max; Maturação; Melhoramento Genético Vegetal; Soja. |
Thesaurus Nal: |
calcium; plant breeding; soil fertility; soybeans. |
Categoria do assunto: |
-- |
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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Registros recuperados : 207 | |
14. | | SPEHAR, C. R. Cereais e pseudocereais. In: COSTA, A. M.; SPEHAR, C. R.; SERENO, J. R. B. (Ed.). Conservação de recursos genéticos no Brasil. Brasília, DF : Embrapa, 2012. p. 302-335.Biblioteca(s): Embrapa Cerrados. |
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