Division 5a F1F2

Crops to produce basic and certified seed of hybrids of Hordeum vulgare by means of the technique of CMS:

1. (a)

   The crop shall conform to the following standards as regards distances from neighbouring sources of pollen which may result in undesirable foreign pollination:

   Crop	Minimum distance
   For the production of basic seed	100 m
   For the production of certified seed	50 m

2. (b)

   The crop shall have sufficient varietal identity and purity as regards the characteristics of the components.

   In particular the crop shall conform to the following standards:

   1. (i)

      The percentage by number of plants which are obviously not being true to type shall not exceed:

      • for the crops used to produce basic seed, 0,1 % for the maintainer and the restorer line and 0,2 % for the CMS female component,

      • for the crops used to produce certified seed, 0,3 % for the restorer and the CMS female component and 0,5 % in case the CMS female component is a single hybrid.

   2. (ii)

      The level of male sterility of the female component shall be at least:

      • 99,7 % for crops used to produce basic seed,

      • 99,5 % for crops used to produce certified seed.

   3. (iii)

      The requirements of points (i) and (ii) shall be examined in official post-control test.

3. (c)

   Certified seed may be produced in mixed cultivation of a female male-sterile component with a male component which restores fertility.