Tokyo stocks rose Friday morning as investors sought bargains after the Nikkei index hit a one-month low the previous day, while the market was weighed down by overnight falls on Wall Street. The 225-issue Nikkei Stock Average gained 65.83 points, or 0.17 percent, from Thursday to 38,119.96. The broader Topix index was up 17.11 points, or 0.63 percent, at 2,743.31. The U.S. dollar was slightly weaker in the upper 156 yen range on concerns over the U.S. economy after the country’s gross domestic product growth in the January-March quarter was revised downward, dealers said. At noon, the dollar …