Abstract
Wheat is characteristic of its allopolyploid nature. Common wheat is allohexaploid containing three different genomes, namely A, B and D. Allopolyploidization induces revolutionary (rapid) and evolutionary (slow) changes of gene expressions. These gene expression alterations are controlled genetically as well as epigenetically after amphidiplodization. Wheat is also well known of its high crossability to far relatives. In fact, series of barley chromosome addition lines in the background of common wheat and tetraploid wheat had been made up by the ordinary crossing method. Wheat flour shows high process ability, while barley contains a number of functional constituents. We have developed tools for functional genomics of wheat by analyses for a large number of ESTs, which covers more than 90% of estimated genes. Project for integrated genomics has been started to clarify the novel functional constituents in the barley chromosome addition lines of common wheat and its application to food comsumption.
