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| Registros recuperados : 226 | |
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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: |
24/05/1996 |
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Data da última atualização: |
24/05/1996 |
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Autoria: |
SPEHAR, C. R. |
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Título: |
Diallel analysis for mineral element absorption in tropical adapted soybeans [Glycine max (L.) Merrill]. |
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Ano de publicação: |
1995 |
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Fonte/Imprenta: |
Theoretical and Applied Genetics, New York, v.90, p.707-713, 1995. |
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Idioma: |
Inglês |
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Conteúdo: |
The Brazilian tropical adapted soybeans contains, in addition to superior morphological characters, genetic factors for tolerance to cultivation in acidic, mineral-stressed soils. However, the selection process for these hindrances has been empirical, and information on the genetics of mineral element uptake by the plant is necessary. The objective of this investigation was to identify the mode of inheritance for the absorption of phosphorus, potassium, calcium, magnesium, iron, aluminium, manganese and zinc, and copper in a 9 x 9 diallel cross. General combining ability (GCA) was higher than specific combining ability (SCA), with the exception of copper, manganese and zinc, indicating predominantly additive effects. The ratios of GCA/SCA varied between 3,4(calcium) and 8,5 (magnesium). The regression of covariance (Wr) on variance (Vr) showed that the additive-dominance model explained the genetic differences in this germplasm. However, the detection of overdominance could be related to possible heterozygosity in the parental varieties for mineral absorption. Broad-sense heritability values were higher than narrow sense heritability values for aluminium, iron, potassium, calcium and magnesium, bein in the range of 67.9-86.9% and 42.0-56.6%, respectively. This is and indication that soybeans can be further improved to efficient utilisation of nutrients and to tolerate toxic factors in the soil. |
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Palavras-Chave: |
Aluminium; Cruzamento dialetico; Diallel crossing; Genetic inheritance; Tolerance; Tolerancia. |
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Thesagro: |
Alumínio; Cerrado; Glycine Max; Hereditariedade; Melhoramento Genético Vegetal; Mineral; Nutriente; Soja. |
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Thesaurus NAL: |
minerals; nutrients; plant breeding; soybeans. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02331naa a2200337 a 4500
001 1551701
005 1996-05-24
008 1995 bl --- 0-- u #d
100 1 $aSPEHAR, C. R.
245 $aDiallel analysis for mineral element absorption in tropical adapted soybeans [Glycine max (L.) Merrill].
260 $c1995
520 $aThe Brazilian tropical adapted soybeans contains, in addition to superior morphological characters, genetic factors for tolerance to cultivation in acidic, mineral-stressed soils. However, the selection process for these hindrances has been empirical, and information on the genetics of mineral element uptake by the plant is necessary. The objective of this investigation was to identify the mode of inheritance for the absorption of phosphorus, potassium, calcium, magnesium, iron, aluminium, manganese and zinc, and copper in a 9 x 9 diallel cross. General combining ability (GCA) was higher than specific combining ability (SCA), with the exception of copper, manganese and zinc, indicating predominantly additive effects. The ratios of GCA/SCA varied between 3,4(calcium) and 8,5 (magnesium). The regression of covariance (Wr) on variance (Vr) showed that the additive-dominance model explained the genetic differences in this germplasm. However, the detection of overdominance could be related to possible heterozygosity in the parental varieties for mineral absorption. Broad-sense heritability values were higher than narrow sense heritability values for aluminium, iron, potassium, calcium and magnesium, bein in the range of 67.9-86.9% and 42.0-56.6%, respectively. This is and indication that soybeans can be further improved to efficient utilisation of nutrients and to tolerate toxic factors in the soil.
650 $aminerals
650 $anutrients
650 $aplant breeding
650 $asoybeans
650 $aAlumínio
650 $aCerrado
650 $aGlycine Max
650 $aHereditariedade
650 $aMelhoramento Genético Vegetal
650 $aMineral
650 $aNutriente
650 $aSoja
653 $aAluminium
653 $aCruzamento dialetico
653 $aDiallel crossing
653 $aGenetic inheritance
653 $aTolerance
653 $aTolerancia
773 $tTheoretical and Applied Genetics, New York$gv.90, p.707-713, 1995.
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