TOKYO, June 13 (Xinhua) -- Tokyo stocks opened marginally higher Wednesday as a comparatively weak yen lifted market sentiment and gave exporters a boost.

As of 9:15 a.m. the 225-issue Nikkei Stock Average added 49.62 points, or 0.22 percent, from Tuesday to 22,927.97.

The broader Topix index of all First Section issues on the Tokyo Stock Exchange, meanwhile, gained 5.90 points, or 0.33 percent, at 1,798.72.

Marine transportation, electric power and gas, and real estate-linked issues comprised those that gained the most in the opening minutes after the morning bell.