TOKYO, March 8 (Xinhua) -- Tokyo stocks opened higher Thursday as a comparatively weak yen against the U.S. dollar gave exporter issues a boost, with an upward revision to Japan's October-December gross domestic product also brightening the market mood.

As of 9:15 a.m., the 225-issue Nikkei Stock Average added 190.30 points, or 0.90 percent, from Wednesday to 21,443.02.

The broader Topix index of all First Section issues on the Tokyo Stock Exchange, meanwhile, gained 13.25 points, or 0.78 percent, at 1,717.21.

Electric appliance, pharmaceutical and bank-linked issues comprised those that gained the most in the opening minutes after the bell.