Water Stress Physiology

Water stress physiology refers to the biochemical and morphological responses cannabis plants exhibit under conditions of limited water availability. Under drought conditions, plants accumulate secondary metabolites—including terpenes and flavonoids—as part of adaptive mechanisms to reduce water loss and protect cellular structures. Breeders working in arid or semi-arid regions often select for genetics that express robust water-stress responses, as these traits correlate with essential oil production and osmotic regulation. Terpene profiles commonly shift under water limitation, with some monoterpenes and sesquiterpenes increasing in concentration. Understanding these physiological patterns helps inform cultivation strategies and aids in identifying drought-tolerant lineages for breeding programs. This trait is particularly relevant for breeders developing cultivars suited to water-limi

Breeders leverage water stress physiology to develop cultivars with enhanced secondary metabolite production and drought tolerance. Selection for robust stress-response genetics can yield plants that maintain vigor in water-limited conditions while expressing distinctive terpene profiles.