Futures lower on global economic growth concerns

(Reuters) - Stock futures pointed to a lower opening for Canada's main stock index on Tuesday as investors refrained from betting on riskier assets amid fears of a sustained global economic slowdown. March futures on the S&P TSX index were down 0.55 percent at 7:15 a.m. ET. No major economic releases are scheduled . The Toronto Stock Exchange's S&P/TSX composite index fell on Monday as banking, energy and consumer stocks lost ground, offsetting gains among gold miners as global growth co