FIRST SCHEDULE (Regulation 4) POTATO SEED CERTIFICATION SCHEME Code Class Parent seed and availability Colour of label S1 (S2, S3) Pre-basic Seed SE Basic Seed E1 Certified Seed, 1st generation Produced by the breeder under the supervision of a Certifying Agency. The maximum number of generations shall not exceed three, as determined by theCertifying Agency and such number of generation shall form part of the identification. Produced from Pre-basic Seed under the supervision of a Certifying Agency. Only one generation permitted. Produced from Basic Seed and inspected by a Certifying Agency. Produced from Certified Seed, 1st generation (or higher class) and inspected by a Certifying Agency. Produced from Certified Seed, 2nd generation (or higher class) and inspected by a Certifying Agency. Produced from Certified Seed, 3rd generation (or higher class) and inspected by a Certifying Agency. E2 Certified Seed, generation 2nd Certified Seed, generation 3rd Violet stripe on white White Blue stripe on white Red stripe on white A Red stripe on white Certified Seed, 4th generation B Green stripe on white NOTES: 1. Field inspection is compulsory for all classes. 2. For classes S and SE virus post control is compulsory. 3. Tuber control is compulsory for all classes. 4. For classes S1 to E2 control growing is compulsory. 5. Pre-basic seed shall not be available to the public; basic seed shall be available only to registered seed growers; the other classes shall be available to the public.