Abstract
Plants of a drug strain of Cannabis sativa L -grown 33 days under daylight, shaded daylight conditions, filtered green, blue, and red light, and darkness-were analyzed by gas-liquid chromatography for their cannabinoid content. The highest content of cannabinoids, predominantly Δ9-tetrahydrocannabinol (Δ9-THC) in this strain, occurred in the youngest leaves of daylight-grown plants Leaves at successively lower nodes of this control condition and all treated plants subsequently grown in daylight contained progressively lower levels of cannabinoids Leaves from plants grown under filtered green light and darkness contained significantly lower levels of Δ9-THC than those from plants grown in daylight However, the 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, indicating that these conditions did not alter the synthetic rate of this cannabinoid The cannabichromene (CBC) content of plants grown under filtered red and green light and darkness differed from the CBC content in plants grown in daylight, indicating that the formation of this cannabinoid was independent of Δ9-THC Leaves from plants grown under filtered red and green light and darkness recovered the capacity to synthesize typical levels of Δ9-THC and CBC when placed under daylight conditions Plants from all light and dark treatments, when subsequently placed under daylight conditions for 66 days, attained levels of cannabinoid synthesis comparable to the daylight controls
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Claims 10
Claim · model-written summary
Youngest leaves of daylight-grown plants had the highest cannabinoid content, predominantly Δ9-THC.
- Taxon
- Cannabis sativa L.
Cannabis sativat0 - Organ / stage
- youngest leavese0
- Treatment
- daylighte0
- Outcome
- content of cannabinoidse0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest content of cannabinoids, predominantly Δ9-tetrahydrocannabinol (Δ9-THC) in this strain, occurred in the youngest leaves of daylight-grown plants”
t0“Cannabis sativa L.”
Claim · model-written summary
Successively lower leaf nodes had progressively lower cannabinoid levels.
- Taxon
- Cannabis sativa L.Cannabis sativat0
- Organ / stage
- Leaves at successively lower nodese0
- Outcome
- levels of cannabinoidse0
- Direction
- lowere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaves at successively lower nodes of this control condition and all treated plants subsequently grown in daylight contained progressively lower levels of cannabinoids”
t0“Cannabis sativa L.”
Claim · model-written summary
Filtered green light yielded significantly lower leaf Δ9-THC than daylight.
- Taxon
- Cannabis sativa L.Cannabis sativat0
- Organ / stage
- Leavese0
- Treatment
- filtered green lighte0
- Outcome
- levels of Δ9-THCe0
- Direction
- lowere0
- Comparator
- daylighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaves from plants grown under filtered green light and darkness contained significantly lower levels of Δ9-THC than those from plants grown in daylight”
t0“Cannabis sativa L.”
Claim · model-written summary
Darkness yielded significantly lower leaf Δ9-THC than daylight.
- Taxon
- Cannabis sativa L.Cannabis sativat0
- Treatment
- darknesse0
- Outcome
- levels of Δ9-THCe0
- Direction
- lowere0
- Comparator
- daylighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaves from plants grown under filtered green light and darkness contained significantly lower levels of Δ9-THC than those from plants grown in daylight”
t0“Cannabis sativa L.”
Claim · model-written summary
Shaded daylight did not significantly change leaf Δ9-THC relative to daylight controls.
- Taxon
- Cannabis sativa L.Cannabis sativat0
- Treatment
- shaded daylighte0
- Outcome
- Δ9-THC contente0
- Direction
- did not differe0
- Comparator
- daylight controlse0
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.”
Claim · model-written summary
Filtered red light did not significantly change leaf Δ9-THC relative to daylight controls.
- Taxon
- Cannabis sativa L.Cannabis sativat0
- Treatment
- filtered rede0
- Outcome
- Δ9-THC contente0
- Direction
- did not differe0
- Comparator
- daylight controlse0
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.”
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
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.”
Claim · model-written summary
CBC content under red, green and dark conditions differed from daylight.
- Taxon
- Cannabis sativa L.Cannabis sativat0
- Treatment
- filtered red and green light and darknesse0
- Outcome
- cannabichromene (CBC) contente0
- Comparator
- daylighte0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The cannabichromene (CBC) content of plants grown under filtered red and green light and darkness differed from the CBC content in plants grown in daylight”
t0“Cannabis sativa L.”
Claim · model-written summary
Leaves exposed to red or green light or darkness recovered typical Δ9-THC and CBC synthesis under daylight.
- Taxon
- Cannabis sativa L.Cannabis sativat0
- Treatment
- daylight conditionse0
- Outcome
- capacity to synthesize typical levels of Δ9-THC and CBCe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaves from plants grown under filtered red and green light and darkness recovered the capacity to synthesize typical levels of Δ9-THC and CBC when placed under daylight conditions”
t0“Cannabis sativa L.”
Claim · model-written summary
After 66 days of daylight, all earlier light and dark treatments reached cannabinoid synthesis comparable to daylight controls.
- Taxon
- Cannabis sativa L.Cannabis sativat0
- Treatment
- all light and dark treatmentse0
- Outcome
- levels of cannabinoid synthesise0
- Direction
- comparablee0
- Qualifier
- daylight conditions for 66 dayse0
- Comparator
- daylight controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants from all light and dark treatments, when subsequently placed under daylight conditions for 66 days, attained levels of cannabinoid synthesis comparable to the daylight controls”
t0“Cannabis sativa L.”
The same questions in other papers
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See all 11 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.