Adventitious GM presence in Conventional Seed

In seed producing areas where GM crops co-exist with seed crops of conventionally bred varieties, there is a risk that seed from conventionally bred seed may inadvertently contain GM seed (AGMP) through cross-pollination or physical mixing of seed during processing. The legislative EU framework requires the labelling of conventional seed lots that contain any detectable traces of authorised GM seeds. If unauthorised GM seed is found in conventional crop seed, there is zero tolerance and the affected seedlot cannot be marketed.

Risk analyses undertaken on conventionally breed crops suggest that some species are at a higher risk, relative to other crops, from incorporation of adventitious GM material during seed production. Crops that are important to Scottish Agriculture that fall into this high risk category are:

  • Turnip fodder rape and related crops (Brassica rapa)
  • Winter and spring oilseed rape and related crops (Brassica napus)
  • Fodder maize & sweet corn (Zea mays)

The risk status of all crop species listed above is regularly reviewed.

Importers, producers, processors and merchants of non-GM (conventionally bred) agricultural and vegetable seed are recommended to take all reasonable steps to ensure, before obtaining or marketing high risk category seed it is free of AGMP (see relevant Guidance pages).