Botrytis Resistance Genetics

Botrytis resistance genetics refer to inherited traits that help cannabis plants withstand Botrytis cinerea (gray mold), a common fungal pathogen in humid growing environments. While no cannabis variety is completely immune, certain lineages—particularly those with denser canopy architecture, faster flowering times, or genetic backgrounds from arid regions—show reduced susceptibility to infection. Breeders working in this category typically select parent plants that demonstrate natural resistance through improved air circulation traits or phenotypic vigor. Understanding botrytis resistance mechanics helps cultivators and breeding programs make informed decisions about genetic selection for specific climates. This trait is distinct from aroma profiles but often correlates with plant structure and terpene expression patterns that affect microbial colonization.

Breeders intentionally cross lines with botrytis-resistant traits to develop cultivars suitable for humid or outdoor production. Selection for this trait often involves multi-generational testing under controlled high-humidity conditions to identify heritable resistance factors.