Article 8
1.Member States shall prescribe that seed potatoes shall meet the requirements of Directive 77/93/EEC and shall derive in direct line from material obtained under an officially approved programme which has been found free of the organism in official or officially supervised testing using the method set out in Annex I.
The aforesaid testing shall be carried out:
in cases where the contamination affects seed potato production, on the plants of the initial clonal selection,
in other cases, either on the plants of the initial clonal selection or on representative samples of the basic seed potatoes or earlier propagations.
2.The following provisions may be adopted in accordance with the procedure laid down in Article 16a of Directive 77/93/EEC:
the detailed rules of application of the first indent of the second subparagraph of paragraph 1 of this Article,
the rules concerning the representative samples provided for in the second indent of the second subparagraph of paragraph 1 of this Article.