F1 F2 Segregation
F1 F2 segregation refers to the predictable genetic splitting observed in the second filial generation of a cross, where dominant and recessive traits reappear in ratios following Mendelian principles. In cannabis breeding, F1 hybrids (first generation) typically express uniform phenotypes, while F2 plants (second generation from F1 selfing or F1×F1 crossing) display trait segregation—some offspring revert to parental types or show novel combinations. This segregation is fundamental to understanding how terpene profiles, plant structure, and cannabinoid expression patterns behave across generations. Breeders document F1 F2 splits to identify stable lines, select for desired aroma markers, and map which aromatic compounds breed true versus those requiring continued selection pressure.
F1 F2 Segregation strains
No strains tagged into F1 F2 Segregation yet — they'll appear here as breeders submit lineage records under this aroma.
F1 F2 segregation refers to the predictable genetic splitting observed in the second filial generation of a cross, where dominant and recessive traits reappear in ratios following Mendelian principles. In cannabis breeding, F1 hybrids (first generation) typically express uniform phenotypes, while F2 plants (second generation from F1 selfing or F1×F1 crossing) display trait segregation—some offspring revert to parental types or show novel combinations. This segregation is fundamental to understanding how terpene profiles, plant structure, and cannabinoid expression patterns behave across generations. Breeders document F1 F2 splits to identify stable lines, select for desired aroma markers, and map which aromatic compounds breed true versus those requiring continued selection pressure.
F2 segregation studies help breeders determine which aroma and terpene traits are monogenic (single-gene controlled) versus polygenic (multi-gene), enabling faster stabilization of terpene-forward strains. Tracking segregation ratios also reveals whether target aromas are homozygous-stable or require heterozygosity to express.
Educational reference · Cultivar metadata only · No medical claims