A comparison between joint regression analysis and the AMMI model: a case study with barley

作者：Pereira Dulce G; Rodrigues Paulo C^*; Mejza Stanislaw; Mexia Joao T

来源：Journal of Statistical Computation and Simulation, 2012, 82(2): 193-207.

DOI：10.1080/00949655.2011.615839

• joint regression analysis
• AMMI models
• spring barley
• multiple comparisons
• zigzag algorithm
• mega-environments

Joint regression analysis (JRA) and additive main effects and multiplicative interaction (AMMI) models are compared in order to (i) access the ability of describing a genotype by environment interaction effects and (ii) evaluate the agreement between the winners of mega-environments obtained from the AMMI analysis and the genotypes in the upper contour of the JRA. An iterative algorithm is used to obtain the environmental indexes for JRA, and standard multiple comparison procedures are adapted for genotype comparison and selection. This study includes three data sets from a spring barley (Hordeum vulgare L.) breeding programme carried out between 2004 and 2006 in Czech Republic. The results from both techniques are integrated in order to advise plant breeders, farmers and agronomists for better genotype selection and prediction for new years and/or new environments.

• 出版日期2012