Dunkin’ Brands Group, the corporate parent of Dunkin’ Donuts and Baskin-Robbins, said Thursday that second-quarter revenue rose 9.8 percent to $172.4 million.

Net income was $18.5 million, up from $17.2 million a year earlier, the Canton-based company said.

In a statement, chief executive Nigel Travis, noting that Friday is Dunkin’s one-year anniversary as a publicly traded company, said its “strong performance to date clearly demonstrates the platform for growth that we laid out at the time of our IPO.”

The quarter brought a 32 percent increase in adjusted earnings per share, he said.

“We also continued to capitalize on our significant growth prospects in the US and internationally and by the end of the quarter had more than 17,000 restaurants worldwide.”

Dunkin’ said its franchisees and licensees opened 140 net new restaurants around the world in the quarter.

Operating income fell $15.7 million, or 25.3 percent, from the 2011’s second quarter, primarily as a result of a $20.7 million increase in legal reserve and $3.7 million in costs related to the closing of an ice cream manufacturing plant in Ontario, Canada.

Dunkin’ also said directors OK’d a repurchase of up to $500 million of outstanding common stock.