Trichome Density Traits

Trichome density refers to the concentration and distribution of resinous glands across cannabis plant surfaces, particularly on flowers and leaves. Breeders classify plants along a spectrum from sparse to exceptionally dense trichome coverage, which can be observed and selected across generations. Trichome density is a visible, heritable trait influenced by genetics, environmental stress, and cultivation conditions. Dense trichome phenotypes are commonly associated with specific lineages and are often prioritized in breeding programs focused on resin production. Understanding trichome density helps breeders identify parent plants with consistent gland expression and predict offspring characteristics. This trait serves as a primary visual marker during phenotype selection and stability testing.

Breeders working with trichome density select parent plants exhibiting uniform, dense coverage to establish stable lines with predictable resin characteristics across generations. Dense-trichome traits are frequently crossed to establish morphological consistency and serve as selection criteria alongside other heritable features like flowering time and plant structure.