European Union

For EU countries, the Council Regulation on Community Plant Varieties Rights (EC 2100/94) is the relevant legislation in force.

http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX:31994R2100:EN:HTML

The provisions of the European Patent Convention apply to plant varieties when they incorporate patented genetic sequences.

http://www.epo.org/law-practice/legal-texts/epc.html