TOKYO (AFP) - Tokyo stocks rose 0.78 per cent Tuesday morning, tracking a rise on Wall Street and with the weaker yen supporting exporters, as traders awaited Congressional testimony from the Federal Reserve chief about the state of the US economy.

The Nikkei 225 index rose 119.84 points to 15,416.66 by the break while the Topix index of all first-section issues was up 0.70 per cent, or 8.92 points, at 1,274.38.