March 30 (Reuters) - Wall Street’s main indexes opened lower on Tuesday as a rise in U.S. bond yields hit heavyweight tech-related stocks, while undervalued banks and industrial stocks that stand to benefit from a re-opening economy edged higher. The Dow Jones Industrial Average fell 43.5 points, or 0.13%, at the open to 33127.88. The S&P 500 fell 7.7 points, or 0.20%, at the open to 3963.34, while the Nasdaq Composite dropped 50.8 points, or 0.39%, to 13008.804 at the opening bell. (Reporting by Devik Jain in Bengaluru; Editing by Maju Samuel)