AUSTRALIA’S first trial of genetically modified wheat and barley has begun near Narrabri in NSW, with the ultimate goal of producing more nutritious bread. But details of how exactly the genes were altered remain secret. The CSIRO, which is running the three-year experiment, said the various gene combinations in the trial were subject to commercial-in-confidence agreements to protect the interests of various government research agencies and a US company, Arcadia Biosciences.