Updates prices, adds sector details March 11 (Reuters) - Canada's main stock index rose on Thursday as strong commodity prices lifted energy and materials stocks, while a retreat in U.S. Treasury yields eased fears of rising U.S. inflation further boosting sentiment. O/RGOL/ * U.S. Treasury yields fell as concerns over a strong pick up in inflation eased on a tepid rise in U.S. consumer prices in February. * The second biggest decliner was Bausch Health Companies Inc , down 2.9%, after the firm named insider Sam Eldessouky as its new finance chief.