11.—(1) The provisions of this paragraph apply to a hybrid of rye.
(2) Subject to paragraph (3), the crop shall conform to the following standards as regards distances from neighbouring sources of pollen which may result in undesirable foreign pollination—
(a)for the production of basic seed—
(i)where male sterility is used, a minimum distance of 1,000 metres, and
(ii)where male sterility is not used, a minimum distance of 600 metres, and
(b)for the production of CS seed, a minimum distance of 500 metres.
(3) Sub-paragraph (2) shall not apply if there is sufficient protection from any undesirable foreign pollination.
(4) The crop shall have sufficient identity and purity as regards the characteristics of the components, including male sterility.
(5) The number of plants of the crop species which are recognisable as obviously not being true to the component shall not exceed—
(a)in the case of a crop for the production of basic seed, one per 30 square metres, and
(b)subject to paragraph (6), in the case of a crop for the production of CS seed, 1 per 10 square metres.
(6) In an official UK field inspection or a UK field inspection carried out under official supervision the standard in sub-paragraph (5)(b) shall apply to the female component only.
(7) In the case of basic seed, where male sterility is used, the level of sterility of the male-sterile component shall be at least 98%.
(8) Where appropriate, CS seed shall be produced in mixed cultivation of a female male-sterile component with a male component which restores male fertility.