Data/hora: 22/06/2024 13:31:15

Biblioteca(s): | Embrapa Unidades Centrais.
Data corrente: | 04/08/1999
Data da última atualização: | 27/06/2019
Autoria: | SPEHAR, C. R.
Afiliação: | CARLOS ROBERTO SPEHAR, CPAC.
Título: | Diallel analysis for grain yield and mineral absorption rate os soybeans grown in acid brazilian Savannah soil.
Ano de publicação: | 1999
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 34, n. 6, p. 1003-09, jun. 1999
Idioma: | Inglês
Notas: | Título em português: Análise dialélica da produção de grãos e taxa de absorção mineral na soja cultivada em solo ácido dos cerrados brasileiros.
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. The 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-tolerant 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; Dominancia; Melhoramento genetico.
Thesagro: | Aditivo; Alumínio; Cálcio; Variedade.
Thesaurus Nal: | breeding; calcium.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/5357/1/pab97_209.pdf
Registro original: | Embrapa Unidades Centrais (AI-SEDE)
Exemplares: | AI-SEDE - (5357-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS