| Registro completo |
| Provedor de dados: |
PAB
|
| País: |
Brazil
|
| Título: |
Multivariate analyses of genotype x environment interaction of popcorn
|
| Autores: |
Miranda,Glauco Vieira
Souza,Leandro Vagno de
Guimarães,Lauro José Moreira
Namorato,Heraldo
Oliveira,Lucimar Rodrigues
Soares,Marcelo Oliveira
|
| Data: |
2009-01-01
|
| Ano: |
2009
|
| Palavras-chave: |
Zea mays
Adaptability
Breeding
Maize
Popcorn
Selection
Stability
|
| Resumo: |
The objectives of this work were to evaluate the genotype x environment (GxE) interaction for popcorn and to compare two multivariate analyses methods. Nine popcorn cultivars were sown on four dates one month apart during each of the agricultural years 1998/1999 and 1999/2000. The experiments were carried out using randomized block designs, with four replicates. The cv. Zélia contributed the least to the GxE interaction. The cv. Viçosa performed similarly to cv. Rosa-claro. Optimization of GxE was obtained for cv. CMS 42 for a favorable mega-environment, and for cv. CMS 43 for an unfavorable environment. Multivariate analysis supported the results from the method of Eberhart & Russell. The graphic analysis of the Additive Main effects and Multiplicative Interaction (AMMI) model was simple, allowing conclusions to be made about stability, genotypic performance, genetic divergence between cultivars, and the environments that optimize cultivar performance. The graphic analysis of the Genotype main effects and Genotype x Environment interaction (GGE) method added to AMMI information on environmental stratification, defining mega-environments and the cultivars that optimized performance in those mega-environments. Both methods are adequate to explain the genotype x environment interactions.
|
| Tipo: |
Info:eu-repo/semantics/article
|
| Idioma: |
Inglês
|
| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000100007
|
| Editor: |
Embrapa Secretaria de Pesquisa e Desenvolvimento
Pesquisa Agropecuária Brasileira
|
| Relação: |
10.1590/S0100-204X2009000100007
|
| Formato: |
text/html
|
| Fonte: |
Pesquisa Agropecuária Brasileira v.44 n.1 2009
|
| Direitos: |
info:eu-repo/semantics/openAccess
|
