Bank of Japan Gov. Haruhiko Kuroda said Sunday he saw no signs of "excessively bullish expectations" in asset markets and the nation can cope with rising interest rates, provided the economy improves.

The comments by the 68-year-old central banker came after stocks slumped on Thursday by the most since the March 2011 earthquake and 10-year yields touched 1 percent, more than triple the record low on April 5.

While the BOJ's expanded asset purchases are intended to bring interest rates down, an increase of as much as 3 points in yields could be acceptable, Kuroda said in a speech in Tokyo.