Drought Stress Tolerance

Drought stress tolerance refers to a plant's genetic capacity to maintain function and survival under water-limited conditions. In cannabis breeding, this trait involves multiple physiological mechanisms—including deep root development, stomatal regulation, and osmotic adjustment—that allow cultivars to sustain growth when soil moisture is restricted. Lineage records frequently report drought tolerance in landraces from arid regions, particularly in Central Asian, Middle Eastern, and North African cannabis populations that evolved under naturally dry climates. Modern breeding programs often incorporate these genetics to develop cultivars suited to water-scarce environments or sustainable cultivation practices. The trait is polygenic and environmentally modulated, making selection challenging but valuable for regional adaptation strategies.

Breeders working in water-limited regions or sustainable agriculture prioritize drought tolerance to reduce irrigation demands and improve crop resilience. Crossing drought-adapted landraces with commercial cultivars requires careful phenotyping under controlled water-stress conditions to identify stable, heritable markers.