Bract Calyx Ratio

Bract-calyx ratio refers to the proportional relationship between bracts (modified leaves surrounding the flower) and the calyx (the sepals forming the outer flower structure) in cannabis inflorescences. This morphological trait varies across cultivars and can influence visual appearance, resin distribution, and overall flower structure. Breeders working in this category have observed that ratios favoring larger bracts often correlate with denser inflorescences and potentially improved aesthetic presentation. Conversely, cultivars with pronounced calyces relative to bracts may exhibit different resin gland distribution patterns. Understanding bract-calyx proportions is relevant for phenotype selection and breeding programs aiming to optimize specific structural outcomes.

Breeders monitor bract-calyx ratios during selection to target desired flower density, trichome distribution, and visual traits in target markets. This morphological measurement helps stabilize phenotypes across generations and informs decisions about parental crosses for structural uniformity.