Aug 21 (Reuters) - Canada's main stock index rose at the open on Wednesday, rebounding from the previous session's weak close, as a more than 1% rise in oil prices helped push energy shares higher.
* At 9:30 a.m. ET (1330 GMT), the Toronto Stock Exchange's S&P/TSX Composite index .GSPTSE was up 37.23 points, or 0.23%, at 16,250.54.