Japan’s farm minister has tried to calm concerns about possible shortfalls in the country’s main source of flour for cake and other sweets after genetically modified wheat was discovered in the United States, saying the country has two months’ inventory of the grade. [...] “We’re looking to the development of an investigation by U.S. authorities,” Hayashi said. “But if the period of the halt is prolonged, we may have to consider the possibility of an earlier supply than usual of this year’s locally grown wheat and the possibility of importing alternative types from abroad.”