Figure 1

Comparisons of rye genes not expressed in triticale and 200 random selected rye genes to T. aestivum databases. (A) The majority of the 112 rye genes not expressed in triticale has lower sequence identity to wheat genome sequences in the IWGSC-WSS database (black bars) than to the control set consisting of 200 rye random sequences (gray bars). (B) Approximately 10% of rye genes not expressed in triticale had more than 90% sequence identity to the T. aestivum GenBank EST database (black bars), while 64% of the control set of 200 rye random sequences has high sequence identity to wheat ESTs (gray bars). χ2 contingency tests were carried out to test the if the number of rye genes not expressed triticale was significantly different from the number of random control rye genes in each class of percent identity of hits against the wheat A and B genomic sequences and the wheat EST databases, respectively. *marks significant differences with p < 0.01 in the number of contigs from the non-expressed rye genes and random rye genes in each class of percent identities between the rye contigs and wheat contigs.