Figure 4.

Virtual northern analysis of ESTs (expressed sequence tags) to show differential expression of homeologs during different stages of plant development. Green, pink, and blue bars correspond to three homeologs of wheat. The darker color bar indicates the presence of expression of the homeolog and the lighter bar denotes its absence. EF, early flowering; LF, later stages of flowering. Both EF and LF were collected at Feekes scale 6, so should be considered the same. FD denotes flowering date and HD heading date, whereas DPA represents days postanthesis. The EST numbers were normalized with respect to the number of actin copies.