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5. Seed is divided into the following categories, commonly known by the abbreviations given—
(a)breeder’s seed (“BR”);
(b)pre-basic seed (“PB”);
(c)basic seed (“BS”);
(d)certified seed (“CS”);
(e)certified seed, first generation (“C1”);
(f)certified seed, second generation (“C2”);
(g)certified seed, third generation (“C3”);
(h)commercial seed (“CM”);
(i)standard seed (vegetables only) (“ST”);
(j)seed of a higher voluntary standard (“HVS”).