Pathogen Susceptibility

Pathogen susceptibility in cannabis refers to a plant's genetic predisposition to infection by fungi, bacteria, viruses, and other pathogens. While all plants face disease pressure, certain lineages show measurably higher vulnerability to specific threats—commonly powdery mildew, botrytis, or root pathogens—due to their genetic background and breeding history. Understanding susceptibility patterns is critical for cultivation planning, especially in humid or high-density environments where disease spreads rapidly. Breeders track susceptibility alongside resistance traits to map genetic markers and develop more resilient cultivars. This knowledge informs both indoor and outdoor production decisions and shapes long-term breeding objectives for disease-resistant lines.

Breeders systematically document pathogen susceptibility to identify genetic bottlenecks and select against vulnerable alleles in breeding programs. Crossing susceptible lines with resistant genetics is a primary strategy for improving overall plant health and reducing crop loss.