Kaitsealuste sortide tasandil registreeritakse lähtesordi ja sellest tuletatud sordi ametlikud kirjeldused ning sortide, omanike ja aretajate nimed nende nõudel või neist ühe nõudel, kui tal on teiste nõusolek, või kohtuotsuse alusel, mis sisaldab otsust sortide eristamise kohta lähtesordiks ja tuletatud sordiks.
... a variety shall be deemed to be essentially derived from another variety, referred to hereinafter as 'the initial variety' when:
(a) it is predominantly derived from the initial variety, or from a variety that is itself predominantly derived from the initial variety;
(b) it is distinct in accordance with the provisions of Article 7 from the initial variety; and
(c) except for the differences which result from the act of derivation, it conforms essentially to the initial variety in the expression of the characteristics that results from the genotype or combination of genotypes of the initial variety.