In his report on GM wheat that is expected to be released today, New Zealand genetics lecturer Jack Heinemann, from the University of Canterbury, said the CSIRO's technology suppressed an enzyme in the wheat which was similar to the human enzyme that produces glycogen. [...] The CSIRO yesterday revealed it had received approval from the Office of the Gene Technology Regulator for two field trials of wheat and barley with altered starch composition. The latest crop had been planted in the ACT in June.