Tetrahydrocannabinol levels in hemp (cannabis sativa) germplasm resources

  title={Tetrahydrocannabinol levels in hemp (cannabis sativa) germplasm resources},
  author={Ernest Small and David Marcus},
  journal={Economic Botany},
In most of the western world where industrial hemp, Cannabis sativa, is licensed for cultivation, the plants must not exceed a level of 0.3% tetrahydrocannabinol (THC), the principal intoxicating constituent of the species. Because there are no publicly available germplasm hemp collections in North America and only a very few, recent North American cultivars have been bred, the future breeding of cultivars suitable for North America is heavily dependent on European cultivars and European… CONTINUE READING


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