Terpene Ratios And Stability

Terpene ratios describe the relative proportions of dominant volatile compounds within a cannabis cultivar's profile—for example, a myrcene-dominant strain may carry 40–60% myrcene alongside 10–20% limonene and pinene. Stability refers to how consistently these ratios express across generations, growing conditions, and harvests; some lineages maintain tight terpene fingerprints while others show significant batch-to-batch variation. Breeders track ratios through gas chromatography and sensory profiling to establish cultivar standards and predict offspring chemistry. Stable ratios are valued in seed production and clone-based lines, enabling reproducible flavor and aroma profiles. Environmental factors—temperature, light, soil—can shift ratios materially, so stability assessments require controlled conditions. Understanding ratio stability helps breeders select parents, stabilize emerging

Breeders use terpene-ratio mapping as a selection tool when fixing desired aromatic phenotypes in F2 and F3 generations. Stable ratios indicate homozygosity at loci controlling terpene synthase expression and are often a marker of line maturity and reliability in seed cataloging.