Heat Stress Response

Heat stress response in cannabis refers to the plant's biochemical adaptations when exposed to elevated temperatures, which can trigger shifts in volatile terpene production and secondary metabolite synthesis. Breeders and cultivators observe that some genotypes maintain stable terpene profiles under thermal stress, while others show notable compositional changes in their volatile fraction. This trait is influenced by both genetics and environmental conditions, making it a subject of interest in breeding programs focused on climate resilience. Understanding heat stress response patterns helps differentiate between genotypes with inherent thermotolerance versus those prone to terpene degradation or unfavorable chemical shifts during peak growing seasons.

Breeders working in warm climates or breeding for climate-adaptive cultivars prioritize heat stress response stability to maintain consistent secondary metabolite profiles. Selection for this trait involves evaluating terpene retention and cannabinoid stability across temperature ranges, supporting development of more robust breeding lines.