PARIS, May 18 (Xinhuanet) -- European Union's (EU) Chief ExecutiveJose Manuel Barroso said Wednesday the EU constitution will not berenegotiated if France rejects it in the upcoming referendum.

    "It would not be realistic to open renegotiation," Barroso saidto Europe 1 Radio.

    "I do not believe that the majority of countries are ready for negotiations," he said.

    A referendum is slated on May 29 in France over the constitution, which must be approved by all 25 EU member states and aims at simplifying decision-making in the EU following last year's expansion.

    Two surveys released Monday separately by the Ipsos and CSA institutes both suggested some 51 percent of the French people would reject the legislation.

    The EU chief executive also appealed to French voters to support the EU constitution, saying a "no" result will be bad newsfor the economy in France and Europe.

    "I make an appeal in the name of the values which are the values of France and Europe for a 'Yes', a sign of confidence, because that sign of confidence in Europe is a sign of confidence in the future of France," Barroso said.

    "There are people in France who oppose it for absolutely contradictory reasons. There's no clear message, and the message from France could contradict the message from other countries," hesaid. Enditem