The Commissioners shall be satisfied that the parents shall be selected either for their combining ability, or for their outstanding characters as assessed by them in accordance with paragraphs 1 to 10 of Schedule 3, giving particular weight to the requirements of paragraphs 4 and 6 to 10 of that Schedule.

The Commissioners shall approve the objective, crossing design and pollination system, components, isolation and location of the parents.

The identity, number and proportion of the parents in a combination must be notified to the Commissioners when the application is made under regulation 7(7) and the Commissioners' approval of these features shall be obtained before the parents may be approved.

In the case of parents intended for the production of an artificial hybrid, the percentage of hybrids in the reproductive material must be determined by a verification test the methodology of which shall be approved in writing by the Commissioners.