|
|
Registro Completo |
Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
24/05/1996 |
Data da última atualização: |
24/05/1996 |
Autoria: |
SPEHAR, C. R. |
Título: |
Diallel analysis for mineral element absorption in tropical adapted soybeans [Glycine max (L.) Merrill]. |
Ano de publicação: |
1995 |
Fonte/Imprenta: |
Theoretical and Applied Genetics, New York, v.90, p.707-713, 1995. |
Idioma: |
Inglês |
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. |
Palavras-Chave: |
Aluminium; Cruzamento dialetico; Diallel crossing; Genetic inheritance; Tolerance; Tolerancia. |
Thesagro: |
Alumínio; Cerrado; Glycine Max; Hereditariedade; Melhoramento Genético Vegetal; Mineral; Nutriente; Soja. |
Thesaurus Nal: |
minerals; nutrients; plant breeding; soybeans. |
Categoria do assunto: |
-- |
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.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Cerrados (CPAC) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
Registros recuperados : 208 | |
40. | | SPEHAR, C. R.; SOUZA, L. A. C. Assessing mineral composition in soybeans by leaf sampling. In: CONGRESSO LATINO-AMERICANO DE CIENCIA DO SOLO, 13., 1996, Aguas de Lindoia. Solo - Suelo 96. Aguas de Lindoia: USP/SLCS/SBCS/CEA/SBM, 1996... p.109-112. Eventos paralelos ao 13o. CONGRESSO LATINO-AMERICANO DE CIENCIA DO SOLO: 1a. REUNIAO BRASILEIRA DE BIOLOGIA DO SOLO; 4o. SIMPOSIO BRASILEIRO SOBRE MICROBIOLOGIA DO SOLO; 6a. REUNIAO BRASILEIRA SOBRE MICORRIZAS e 11a. REUNIAO BRASILEIRA DE...Biblioteca(s): Embrapa Cerrados. |
| |
Registros recuperados : 208 | |
|
Nenhum registro encontrado para a expressão de busca informada. |
|
|