BERLIN — Ivanka Trump shared the stage Tuesday with some of the world’s most powerful women, representing the United States at a meeting of female business leaders.

But during a panel discussion that also included her host, Chancellor Angela Merkel of Germany, Ms. Trump was jeered by members of the audience.

On her first official overseas trip as an adviser to the president, Ms. Trump was thrust into a more familiar role — defending her father’s behavior to skeptical foreigners.

“The German audience is not that familiar with the concept of a first daughter,” the panel’s moderator, Miriam Meckel, editor in chief of the financial weekly WirtschaftsWoche, said. “I’d like to ask you, what is your role, and who are you representing, your father as president of the United States, the American people, or your business?”