Backcrossing To Stabilise Lines
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Breeders cross an F1 back to one parent repeatedly to lock in a specific CBD trait, usually over four or five generations. Each round narrows variation further, and the stabilisation explanations at https://calmcbdseeds.com describe how many cycles a line typically needs before packs run true. Rushed projects sold at F2 show it immediately. You end up with plants ranging from excellent to useless in a single pack.
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