The governor of one of Germany's richest and most influential states has resigned amid allegations he allowed various private companies to fund business and pleasure trips he took.

Lothar Spaeth stepped down as president of the southern state of Baden-Wuerttemberg on Sunday, a day after the news magazine Der Spiegel made the allegations. He is a member of Chancellor Helmut Kohl's governing Christian Democratic Union.In an advance telex of this week's issue, Der Spiegel linked Spaeth's alleged acceptance of corporate funding for the trips with his promotion of several economic projects.