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Mega-environment analysis of maize breeding data from Brazil
Pereira, Francielly de Cássia; Ramalho, Magno Antonio Patto; Resende Junior, Marcio Fernando Ribeiro de; Von Pinho, Renzo Garcia.
Afiliação
  • Pereira, Francielly de Cássia; Universidade Federal de Lavras. Departamento de Biologia. Lavras. BR
  • Ramalho, Magno Antonio Patto; Universidade Federal de Lavras. Departamento de Biologia. Lavras. BR
  • Resende Junior, Marcio Fernando Ribeiro de; University of Florida. Horticultural Sciences Department. Flórida. US
  • Von Pinho, Renzo Garcia; Universidade Federal de Lavras. Departamento de Agricultura. Lavras. BR
Sci. agric ; 79(02): 1-10, 2022. map, ilus, tab, graf
Article em En | VETINDEX | ID: biblio-1498032
Biblioteca responsável: BR68.1
Localização: BR68.1
ABSTRACT
The development and recommendation of single cross maize hybrids (SH) to be used in extensive land areas (mega-environments), and in different crop seasons requires many experiments under numerous environmental conditions. The question we asked is if the data from these multi-environment experiments are sufficient to identify the best hybrid combinations. The aim of this study was to critically analyze the phenotype data of experiments of yield, established by a large seed producing company, under a high level of imbalance. Data from evaluation of 2770 SH were used from experiments conducted over four years, involving the first and second crop seasons, in 50 locations of different years and regions of Brazil. Different types of analysis were carried out and genetic and non-genetic components were estimated, with emphasis on the different interactions of the SH with the environments. Results showed that the coincidence of common hybrids in these experiments is normally small. The estimates of the correlations between of the hybrids coinciding in the environments two by two is of low magnitude. The hybrid × crop season interaction was always expressive; however, the interactions of hybrids and other environmental variables were also important. Under these conditions, alternatives were discussed for making with the information obtained from the experiments, can be more efficient on the process to obtain new hybrids by companies.
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Texto completo: 1 Base de dados: VETINDEX Idioma: En / Pt Revista: Iheringia, Sér. zool / Sci. agric Ano de publicação: 2004 / 2022 Tipo de documento: Article / Project document

Texto completo: 1 Base de dados: VETINDEX Idioma: En / Pt Revista: Iheringia, Sér. zool / Sci. agric Ano de publicação: 2004 / 2022 Tipo de documento: Article / Project document