UPDATE 1-Brazil's Temer would block Embraer buyout, open to capital injection

(Adds quote from Temer, comments by defense minister)

BRASILIA, Dec 22 (Reuters) - Brazilian President Michel Temer said on Friday that he opposed Boeing Co taking control of Embraer SA, although he would welcome an injection of foreign capital into the regional planemaker.

Temer told a news conference he would study any decision the companies take on an alliance when it arrives at his desk, emphasizing that his government could use its 'golden share' in the company to block foreign control. Brazil's government holds veto power over strategic moves at the planemaker, a formerly state-run company fully privatized in 2006.

Boeing and Embraer said on Thursday they are discussing a "potential combination" in a move that could consolidate a global passenger jet duopoly, provided Brazil's government gives its blessing.

"When a decision arrives, I will examine it," Temer said. He added: "The purpose of the golden share is for the government to take such a decision."

Defense Minister Raul Jungmann said the government welcomed a commercial alliance with Boeing.

"We are in favor of this and other partnerships," Jungmann said at the same news conference with Temer.

But because Embraer plays such a central role in Brazil's defense industry and sits at the heart of a cluster of domestic technology companies, foreign control of the company was out of the question.

"The moment that control of Embraer passes to a company from another country it will control strategic decisions" for Brazil, he said. "No country would give up control of that."

He cited the Gripen fighter jets Embraer will build with Sweden's Saab AB and the KC-390 cargo jet project with which Embraer plans to dominate the military transport market long dominated by the U.S.-made workhorse Hercules C-130.

Boeing and Embraer last year signed a deal under which the U.S. planemaker will help market the new military cargo jet but also provide maintenance services once they are sold. (Reporting by Anthony Boadle and Ricardo Brito; Editing by Christian Plumb and Nick Zieminski)