Fig. 1

Global characterization of gene expression patterns in maize inbred parents and reciprocal hybrids. A Average correlation coefficients based on gene expression values among three biological replicates of F₁ hybrids and two parents. B Principal component analysis (PCA) of maize transcriptomes for four genotypes grown under various light conditions. The ellipse represents hybrid samples. C Clustering analysis of transcript abundance profiles under various light conditions. Biological replicates are shown as individuals. BM and MB represent the F₁ hybrids B73 × Mo17 and Mo17 × B73, respectively. DB73, DMo17, DBM, and DMB represent B73, Mo17, F₁ hybrid BM, and F₁ hybrid MB grown in darkness, respectively; FB73, FMo17, FBM, and FMB represent B73, Mo17, BM, and MB grown under far-red light condition, respectively; BB73, BMo17, BBM, and BMB represent B73, Mo17, BM, and MB grown under blue light condition, respectively; and RB73, RMo17, RBM, and RMB represent B73, Mo17, BM, and MB grown under red light condition, respectively