Figure 1
From: Genetics of phenotypic plasticity: QTL analysis in barley, Hordeum vulgare

Different cases of QTL × E interactions and corresponding phenotypic variance across environments. QT refers to the quantitative trait. SC and CO represent scale and crossover patterns of QTL × E interaction effects, respectively. Sym and disym correspond to symmetrical and dissymmetrical allelic effects at the given QTL position. All1 and All2 represent the reaction norms of individuals carrying one or the alternative allele at the given QTL. V1 and V2 are the phenotypic variances across environments associated with each of the alternative alleles.