The results of an experimental indoor hydroponic Cannabis growing study, using the ‘Screen of Green’ (ScrOG) method—Yield, tetrahydrocannabinol (THC) and DNA analysis

Knight, Glenys; Hansen, Sean; Connor, Mark; Poulsen, Helen; McGovern, Catherine; Stacey, Janet

doi:10.1016/j.forsciint.2010.04.022

Cited by 50 publications

(38 citation statements)

References 10 publications

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“…It was assumed that this should be possible in cases in which Cannabis plants were clonally reproduced from so-called "mother plants". Due to the fact that a lot of Cannabis plants are bred by clonal propagation [5] and may show aneuploidy, polyploidy or multiple gene loci [8], it is not possible to apply Mendelian inheritance and Mendelian inheritance-based biostatistics like the HardyWeinberg law.…”

Section: Introductionmentioning

confidence: 99%

The validation of a 15 STR multiplex PCR for Cannabis species

et al. 2012

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Trade and acquisition of Cannabis drugs are illegal in many countries worldwide; nevertheless, crimes related with these drugs are a major problem for the investigative authorities. With this manuscript, we want to introduce a 15 short tandem repeat (STR) Cannabis marker set that can be amplified in one PCR reaction. This multiplex PCR is specific to Cannabis species and combines highly informative STR markers. The 15 STR multiplex is easy to use and was validated according to common laboratory quality standards. Due to the fact that a lot of Cannabis plants are cultivated by clonal propagation and may show aneuploidy, polyploidy or multiple gene loci, it is not possible to apply biostatistics that follow the Hardy-Weinberg law. However, this multiplex will help the police to trace back trade routes of drug syndicates or dealers and it can help to link Cannabis plants to a crime scene.

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Section: Introductionmentioning

confidence: 99%

The validation of a 15 STR multiplex PCR for Cannabis species

et al. 2012

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“…Thus, we were unable to confirm that Mammoth P contributed to faster blooming and bud development, but our height and basal area data indicate some evidence of faster bloom development and growth. Investments in indoor grow operations of Cannabis sativa require substantial capital investment [14]. Increasing yield by 16.5% will help offset these capital expenses more quickly, likely increasing net income and reducing risk [15].…”

Section: Discussionmentioning

confidence: 99%

Effects of a Microbial Biostimulant, Mammoth PTM, on Cannabis sativa Bud Yield

Conant¹,

Walsh²,

Walsh³

et al. 2017

J Hortic

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“…Some authors affirm that when growing for recreational use, getting stronger cannabis has become a common target (Knight et al, 2010;Mehmedic et al, 2010;Pijlman et al, 2005). Concentration changes have focused on 9-THC, while other cannabinoids maintain or decrease (Mehmedic et al, 2010).…”

Section: Cannabis Potencies and Implications For Healthmentioning

confidence: 99%

Constituyentes psicoactivos del cannabis y sus implicaciones clínicas: una revisión sistemática

et al. 2018

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Objective This systematic review aims to summarize current evidence on which naturally present cannabinoids contribute to cannabis psychoactivity, considering their reported concentrations and pharmacodynamics in humans.Design Following PRISMA guidelines, papers published before March 2016 in Medline, Scopus-Elsevier, Scopus, ISI-Web of Knowledge and COCHRANE, and fulfilling established a-priori selection criteria have been included. ResultsIn 40 original papers, three naturally present cannabinoids and one human metabolite (11-OH-THC) had clinical relevance.Of these, the metabolite produces the greatest psychoactive effects. Cannabidiol (CBD) is not psychoactive but plays a modulating role on cannabis psychoactive effects. The proportion of 9-THC in plant material is higher (up to 40%) than in other cannabinoids (up to 9%). Pharmacodynamic reports vary due to differences in methodological aspects (doses, administration route and volunteers' previous experience with cannabis). (CBD) no es psicoactivo, pero sí ejerce un efecto modulador sobre los efectos psicoactivos del cannabis. La concentración 9-THC en derivados cannábicos (hasta 40%) supera en gran medida la de otros cannabinoides (hasta 9%). La farmacodinamia descrita varía, dada la heterogeneidad en aspectos clave de la metodología (dosis, rutas de administración y experiencia previa con cannabis de los participantes). ConclusionsConclusiones Los resultados evidencian que el 9-THC es el cannabinoide que más contribuye al efecto psicoactivo del cannabis.Otros cannabinoides psicoactivos contribuirían mínimamente, dada su menor potencia psicoactiva y su baja concentración en los derivados cannábicos. La falta de estándares metodológicos dificulta el avance en los conocimientos sobre los efectos del cannabis en la salud. Establecer una unidad estándar de cannabis basada en 9-THC ayudaría a superar estas limitaciones.

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The results of an experimental indoor hydroponic Cannabis growing study, using the ‘Screen of Green’ (ScrOG) method—Yield, tetrahydrocannabinol (THC) and DNA analysis

Cited by 50 publications

References 10 publications

The validation of a 15 STR multiplex PCR for Cannabis species

The validation of a 15 STR multiplex PCR for Cannabis species

Effects of a Microbial Biostimulant, Mammoth PTM, on Cannabis sativa Bud Yield

Constituyentes psicoactivos del cannabis y sus implicaciones clínicas: una revisión sistemática

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