Fig. 2From: Comparative transcriptome analysis reveals important roles of nonadditive genes in maize hybrid An’nong 591 under heat stressPrincipal component analysis of the relationship among samples of the three genotypes. The percentage of variation among samples explained by each principal component is shown on the x-axis and y-axis, respectively. CS, CR, and CF1 represent maternal line CB25, paternal line CM1, and F1 hybrid An’nong 591 under control conditions, respectively; S, R and F1 represent the corresponding genotypes under heat treatmentBack to article page