* "Peripheral" spreads widen after Merkel support drops
* Coalition could prove roadblock to euro integration
* ECB members including Mario Draghi due to speak on Monday
* Euro zone periphery govt bond yields http://tmsnrt.rs/2ii2Bqr
LONDON, Sept 25 (Reuters) - Southern European government bonds sold off early on Monday after an unexpectedly weak election result for Germany's Angela Merkel triggered concerns about the emergence of a more hardline stance towards the euro zone in the bloc's largest economy.
Merkel secured a fourth term as chancellor and said she expects to form a coalition by Christmas.
But she was weakened by a surge in support for the far right. And investors were unsettled by the possibility that she may have to form a "Jamaica" coalition with the pro-business Free Democrats (FDP) and Greens.
"The pro-market Free Democrats, as well as part of the CDU/CSU, oppose deeper financial integration in the euro area," analysts at Morgan Stanley said in a note.
"In exchange for debt relief, the FDP would likely insist that Greece leaves the euro. This suggests headwinds to the euro and periphery."
Indeed, lower-rated Spanish, Italian and Portuguese government bonds sold off, and 10-year yields rose 3 basis points across the board.
The Italy-Germany 10-year government bond yield spread was at its widest in 2-1/2 weeks at 168 basis points.
The yield on Germany's 10-year government bond, the benchmark for the region, edged lower to 0.44 percent.
Yields on most other highly rated government bonds, such as those of Austria and the Netherlands, also fell.
"The FDP will insist on red lines in the plans for deeper euro integration ahead of Macron's keynote speech tomorrow," Commerzbank analyst Christoph Rieger said
The single currency was down 0.4 percent at $1.1900.
Clues to the outlook for monetary policy in the bloc may be forthcoming with a string of European Central Bank members due to speak later on Monday.
Vice President Vitor Constancio is set to be followed by fellow Governing Council member Benoit Coeure; ECB President Mario Draghi makes an introductory statement in the European Parliament at 1300 GMT.
Euro zone inflation data due out at the end of the week will also be closely watched.
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(Reporting by Abhinav Ramnarayan; Editing by Andrew Heavens)