Fiber Yield Traits

Fiber Yield Traits describe characteristics in cannabis plants that correlate with stem fiber production and bast fiber quality—historically a primary breeding focus before flower potency dominated commercial development. These traits include stalk density, fiber bundle arrangement, plant height, and stem diameter, which directly influence the volume and quality of harvestable fiber material. Industrial hemp breeding programs have extensively documented and selected for fiber-favorable phenotypes, with records indicating taller plants and thicker stalks generally yield more processable fiber. Modern breeding has reduced emphasis on fiber yield in flower-focused cultivars, though some landraces and heritage genetics still carry strong fiber-yield characteristics. Understanding these traits remains relevant for breeders exploring dual-purpose genetics or heritage seed preservation.

Breeders selecting for fiber yield typically prioritize plant height, internode spacing, and robust stem structure. These traits are often antagonistic to flower density, requiring breeders to make strategic trade-offs when developing cultivars intended for multiple end uses.