Data/hora: 12/06/2024 01:18:39

Provedor de dados: | 63
País: | Brazil
Título: | Quantitative variation for grain quality in Brazilian maize populations
Autores: | Mittelmann,Andréa; Miranda Filho,José Branco de; Nass,Luciano Lourenço; Lima,Gustavo Júlio Melo Monteiro de; Hara-Klein,Claudete; Silva,Ricardo Machado da.
Data: | 2011-02-01
Ano: | 2011
Palavras-chave: | Plant breeding; Nutritional quality; Protein; Amino acids.
Resumo: | Development of maize (Zea mays L.) cultivars with high grain protein and oil concentrations and an appropriate amino acid composition, without losses in grain yield, represents a challenge in breeding programs. The objective of this work was to study the nutritional quality of ten Brazilian maize populations evaluated in three environments. A randomized block design with six replications was used. Ear yield and the concentrations of protein, oil, serine, glutamic acid, alanine, leucine, tyrosine and phenylalanine were evaluated. Individual and combined analyses of variance were performed. Populations diverged for most of the traits. Environmental effects influenced variation for most of the traits, unlike genotype-environment interaction, allowing the selection on the average of environments. Positive association exists among protein and most of the amino acids, when considered on a dry matter basis and there is no association between nutritional quality and yield; therefore, the development of cultivars that are superior for both traits is expected to be feasible.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000100008
Editor: | São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
Relação: | 10.1590/S0103-90162011000100008
Formato: | text/html
Fonte: | Scientia Agricola  v.68 n.1 2011
Fonte: | info:eu-repo/semantics/openAccess