Certain modules correlate with specific cell wall content in rice. Correlative analysis between cell wall composition and module eigenvectors. Boxes contain Pearson correlation coefficients and their associated P values. Color scales indicated the correlation coefficient levels: red and green for high and low correlation level, respectively. The hierarchical clusters of Module eigenvector were obtained using the agglomeration method of 'complete linkage’ based on the Euclidean distances of all Module eigenvector similarities in cell wall characteristics. The clades are, furthermore, color coded (colored lines above the clades). These colors are used to denote cell wall characteristics in the module based co-expression network depicted in Figure 4.