Botrytis Resistance

Botrytis resistance refers to a plant's genetic capacity to withstand Botrytis cinerea, a fungal pathogen commonly known as gray mold. This trait is of particular interest to cannabis breeders working in humid climates or indoor cultivation environments where fungal pressure is elevated. Botrytis resistance is not a single genetic marker but rather a complex trait influenced by multiple factors including plant structure, trichome density, and inherent biochemical defenses. Lineage records frequently report that certain landrace and heirloom cannabis families show greater resilience to gray mold colonization than others. Breeders working toward disease-resistant cultivars often select parent plants demonstrating compact flower structure, rapid maturation, and natural airflow characteristics that reduce moisture retention in the canopy.

Breeders targeting botrytis-resistant genetics prioritize parents with tight bud architecture, early-to-mid flowering windows, and genetic backgrounds from naturally drier growing regions. Incorporating botrytis resistance into breeding programs reduces crop loss risk and dependency on fungicide applications, making it a practical selection criterion in commercial and outdoor cultivation contexts.