A U.N. food agency said Thursday its experts have developed a bread made from tropical grains and tubers instead of wheat, a breakthrough it said will benefit developing countries. Officials from the U.N. Food and Agriculture Organization said 18 months of experimentation led to the production of bread from tropical plants, which they said is similar to wheat bread in texture, taste and nutritional value. "Innovative technology enables us to produce new types of bread in addition to those from wheat," said Edouard Saouma, the agency's director. "Now bread can be made from indigenous crops, which are much more abundant than wheat in developing countries."