Nikkei rebounds, unhampered by weak tankan survey

(Updates with opening)

TOKYO, April 1 (Reuters) - Japan's Nikkei average rebounded on Tuesday led by Sony Corp , shrugging off a survey showing weaker Japanese business sentiment that the market saw as almost within expectations.

Financial shares rose, with Japan's largest bank Mitsubishi UFJ Financial Group up 0.8 percent.

The Bank of Japan's tankan survey showed corporate ...