Bloomberg: Wheat rebounded from the biggest decline in seven weeks on speculation that a persistent drought will damage crops in parts of the U.S., the world’s largest exporter of the grain. As much as 4 inches (10 centimeters) of rain is expected in parts of central Texas and southern Oklahoma today, missing western wheat-growing areas and all of Kansas, National Weather Service data show. Little or no rain has fallen in parts of the southern Great Plains in the past month, the agency’s data …