Figure 3From: Genome-wide gene expression analysis supports a developmental model of low temperature tolerance gene regulation in wheat (Triticum aestivum L.)Principal component analyses. PC1 (Principal Component 1) separated the samples by the duration of cold-treatment; PC2 separated the samples by genotype and PC3 separated the samples by treatment (cold treated versus untreated). Symbols with the same shape and color represent biological replicates; the numbers on the axes of the graphs refers to the eigenvalues for each component.Back to article page