<<Disclaimer: Verify this information before applying it to your situation.>> THere's some good perspective on the genetic engineering of rice in the context of grasses in "The Molecular Biology of Rice", Ko Shimamoto, Science 270, 1772-1773 (1995). The article claims a common pattern to the genome of grasses of order of the genes in functional terms. This indeed suggests that rational genetic transfer between grasses such as barley and rice can be done. Gluten genes aren't going to pop up unexpectedly. Hmm, what's the "function of gluten in a grass? Interesting numbers on grass evolution: rice's genome 1/10 the size of human, later corn is 6 times rice and later(?) wheat is 34 times larger than rice.Wheat's being larger than human? Kemp Randolph Long Island.