CORRECTED - EU's Dimas opposed to growing 2 GMO maizes-document

(Corrects to show Pioneer part of Dupont, not Dow)

BRUSSELS Oct 25 (Reuters) - The European Commission's environment chief is proposing that two types of genetically modified (GMO) maize should not be authorised for cultivation in the European Union, Commission documents showed.

The maize types in question are Syngenta's (SYNN.VX) Bt-11 and the 1507 maize produced by Pioneer, part of DuPont Co. (DD.N), according to documents seen by Reuters on Thursday.

But a majority of EU commissioners oppose the position of European Environment Commissioner Stavros Dimas, sources familiar with the situation said, implying that the rejection may not take effect.