Clusters of 5,889 tentative consensus (TC) sequences exhibiting differential EST abundance in organ/stress-specific cDNA libraries. Columns represent the nine tall fescue cDNA libraries. DS1: Drought stressed shoot, LF1: Greenhouse grown leaf, SD1: Young seedling, FSS: Field stressed shoot, HSS: Heat stressed shoot, TFM: Floral meristem, RT1: Greenhouse grown root, ST1: Field grown stem, DR1: Drought stressed root. The number of ESTs forming a TC in each cDNA library is presented in coloured rows. The correlation map resulting from clustering of the TCs is given at the left. The dendrogram on top illustrates the relationship between the cDNA libraries/plant organs analyzed. Nine clusters (A to I) are indicated on the right, with number of TCs included in each cluster.