The expression profiling of 439 ESTs in 2 × 20 recombinant inbred lines contrasting for dNDF. The color saturation reflects the magnitude of the log2 expression ratio (Cy5/Cy3) for each transcript. Each row represents an EST. Red and green colors mark up-regulated and down-regulated ESTs in individual line, respectively. The color log2 scale is provided at the bottom of this figure.