Figure 3

Expression profiles of clusters of genes with similar expression patterns. K-means clustering was performed with 1,402 normalized Unigenes with five or more ESTs. Relative expression levels (log2 ratios) of these clusters of genes are shown at different post-harvest conditions, the mean expression values are represented by the magenta lines. Genes were grouped into 13 clusters with distinct expression profiles. The optimal number of clusters was determined by Figure of Merit Analyses (Supplementary Figure S2). The expression levels for ripe juicy fruits that have not under-gone long-term cold storage, E2 (R⁺, C^-); non-ripe; non-long-term cold storage fruits, E1 (R^-, C^-); and non-ripe and ripe fruits that have undergone long-term cold storage, E3 (R^-, C⁺) and E4 (R⁺, C⁺), respectively, appear on the graphs. The total number of genes that make up each cluster is represented in the upper left hand corner of each cluster.