Botrytis Resistance Structure

Botrytis resistance structure refers to plant morphologies and tissue characteristics that reduce susceptibility to Botrytis cinerea (gray mold), a common fungal pathogen in cannabis cultivation. Dense, compact flower formation, lower humidity retention within the canopy, and increased airflow around buds are structural traits often associated with improved resistance. Plants with open, airy bud architecture and thinner calyx layers may show different infection patterns than dense phenotypes. Growers and breeders frequently evaluate structural traits alongside environmental management as part of integrated disease prevention strategies. Lineage records commonly note whether parent plants exhibited tight vs. loose flower density, as this influences mold pressure in humid conditions.

Breeders working in high-humidity regions or indoor operations increasingly incorporate structural traits—such as calyx-to-leaf ratio, internode spacing, and flower compactness—into selection criteria. Understanding which lineages carry open-flower or dense-flower phenotypes helps guide crosses aimed at balancing yield density with air circulation.