title: Integration of statistical and physiological analyses of adaptation of near-isogenic barley lines.
abstract: Seven near-isogenic barley lines, differing for three independent mutant genes, were grown in 15 environments in Spain. Genotype x environment interaction (G x E) for grain yield was examined with the Additive Main Effects and Multiplicative interaction (AMMI) model. The results of this statistical analysis of multilocation yield-data were compared with a morpho-physiological characterization of the lines at two sites (Molina-Cano et al. 1990). The first two principal component axes from the AMMI analysis were strongly associated with the morpho-physiological characters. The independent but parallel discrimination among genotypes reflects genetic differences and highlights the power of the AMMI analysis as a tool to investigate G x E. Characters which appear to be positively associated with yield in the germplasm under study could be identified for some environments.
authors.affiliation: Center UdL-IRTA, Av. Rovira Roure 177, 25006, Lleida, Spain.
authors.forename: I
authors.initials: I
authors.lastname: Romagosa
authors.forename: P N
authors.initials: PN
authors.lastname: Fox
authors.forename: L F
authors.initials: LF
authors.lastname: García Del Moral
authors.forename: J M
authors.initials: JM
authors.lastname: Ramos
authors.forename: B
authors.initials: B
authors.lastname: García Del Moral
authors.forename: F
authors.initials: F
authors.lastname: Roca de Togores
authors.forename: J L
authors.initials: JL
authors.lastname: Molina-Cano