Article 27
1. Specific conditions may be established in accordance with the procedure referred to in Article 25(2) to take account of developments in the areas of: (a) conditions under which chemically treated seed may be marketed; (b) conditions under which seed may be marketed in relation to the conservation in situ and the sustainable use of plant genetic resources, which are associated with specific natural and semi-natural habitats and are threatened by genetic erosion; (c) conditions under which seed suitable for organic production may be marketed. 2. The specific conditions referred to in paragraph 1(b) shall include in particular the following points: (a) the seed of these species shall be of a known provenance approved by the appropriate authority in each Member State for marketing the seed in defined areas; (b) appropriate quantitative restrictions.