Claim · model-written summary
Filtered blue light did not significantly change leaf Δ9-THC relative to daylight controls.
- Taxon
- Cannabis sativa L.
Cannabis sativat0 - Treatment
- blue lighte0
- Outcome
- Δ9-THC contente0
- Direction
- did not differe0
- Comparator
- daylight controlse0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Δ9-THC content of leaves from plants grown under shaded daylight and filtered red and blue light did not differ significantly from the Δ9-THC content in daylight controls”
t0“Cannabis sativa L.”
Title
Effect of Light Quality on Cannabinoid Content of Cannabis sativa L. (Cannabaceae)
Paul G. Mahlberg; John K. Hemphill Botanical Gazette 1983. doi:10.1086/337342
Other claims from this paper (9)
- Observation Youngest leaves of daylight-grown plants had the highest cannabinoid content, predominantly Δ9-THC.
- Association Successively lower leaf nodes had progressively lower cannabinoid levels.
- Intervention effect Filtered green light yielded significantly lower leaf Δ9-THC than daylight.
- Intervention effect Darkness yielded significantly lower leaf Δ9-THC than daylight.
- Intervention effect Shaded daylight did not significantly change leaf Δ9-THC relative to daylight controls.
- Intervention effect Filtered red light did not significantly change leaf Δ9-THC relative to daylight controls.
- Intervention effect CBC content under red, green and dark conditions differed from daylight.
- Observation Leaves exposed to red or green light or darkness recovered typical Δ9-THC and CBC synthesis under daylight.
- Intervention effect After 66 days of daylight, all earlier light and dark treatments reached cannabinoid synthesis comparable to daylight controls.