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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
Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
16/06/2000 |
Data da última atualização: |
20/01/2010 |
Autoria: |
SPEHAR, C. R. |
Título: |
Diallel analysis for grain yield and mineral absorption rate of soybeans grown in acid Brazilian savannah soil. |
Ano de publicação: |
1999 |
Fonte/Imprenta: |
Pesquisa Agropecuaria Brasileira, Brasilia, v.34, n.6, p.1003-1009, jun. 1999. |
Idioma: |
Inglês |
Conteúdo: |
High available aluminium and low levels of calcium below the ploughed zone of the soil are limiting factors for agricultural sustainability in the Brazilian Cerrados (Savannahs). The mineral stresses compound with dry spells effect by preventing deep root growth of cultivated plants and causes yield instability. Tre mode of inheritance for grain yield and mineral absorption ratio of a diallel cross in soybeans [Glycine max (L) Merrill ]grown in high and low Al areas was identified. Differences among the genotypes for grain yield were more evident in the high Al, by grouping tolerant and non-tollerant genotypes for their respective arrays in the hybrids. A large proportion of genetic variance was additive for grain yield and mineral absorption ratio in both environments. High heritability values suggest that soybeans can be improved by crosses among Al-tolerant genotypes, using modified pedigree, early generation and recurrent selection schemes. |
Palavras-Chave: |
Additive; Aluminium; Cultivar; Dominance. |
Thesagro: |
Alumínio; Cálcio; Cerrado; Glycine Max; Melhoramento Genético Vegetal; Soja. |
Thesaurus NAL: |
breeding; calcium; plant breeding; soybeans. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01748naa a2200289 a 4500 001 1546220 005 2010-01-20 008 1999 bl --- 0-- u #d 100 1 $aSPEHAR, C. R. 245 $aDiallel analysis for grain yield and mineral absorption rate of soybeans grown in acid Brazilian savannah soil. 260 $c1999 520 $aHigh available aluminium and low levels of calcium below the ploughed zone of the soil are limiting factors for agricultural sustainability in the Brazilian Cerrados (Savannahs). The mineral stresses compound with dry spells effect by preventing deep root growth of cultivated plants and causes yield instability. Tre mode of inheritance for grain yield and mineral absorption ratio of a diallel cross in soybeans [Glycine max (L) Merrill ]grown in high and low Al areas was identified. Differences among the genotypes for grain yield were more evident in the high Al, by grouping tolerant and non-tollerant genotypes for their respective arrays in the hybrids. A large proportion of genetic variance was additive for grain yield and mineral absorption ratio in both environments. High heritability values suggest that soybeans can be improved by crosses among Al-tolerant genotypes, using modified pedigree, early generation and recurrent selection schemes. 650 $abreeding 650 $acalcium 650 $aplant breeding 650 $asoybeans 650 $aAlumínio 650 $aCálcio 650 $aCerrado 650 $aGlycine Max 650 $aMelhoramento Genético Vegetal 650 $aSoja 653 $aAdditive 653 $aAluminium 653 $aCultivar 653 $aDominance 773 $tPesquisa Agropecuaria Brasileira, Brasilia$gv.34, n.6, p.1003-1009, jun. 1999.
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