Cannabis flowers increase with a “No Red” light treatment for the final three days of production. Recommend a spectrum control program that eliminates red light output from grow space for the final 72 hours of the Cannabis flowering cycle.
Terpenes are aromatic compounds that give cannabis some of its most distinct aromas from citrus and berry to more earthy tones. Many species of plants produce and emit terpenes in a diurnal, or daily cycle that is regulated by a complex web of signaling. There are also many plants that emit terpenes at night to attract nocturnal pollinators (Marinho et al., 2014346). Regardless of when the terpenes are produced or emitted, these processes are often dependent upon cues derived from natural light/dark cycles via a native circadian clock (Dudareva et al., 2004). Several light-sensitive pigments are involved in these processes of production and emission, and the different photoreceptors are dependent upon different wavelengths of light to be activated or deactivated. The emission of terpenes is a process that is entirely dependent upon phytochromes and red/far-red light cues in most plant species (Flores and Doskey, 2015). For example, repeated light/dark phytochrome signaling is necessary for the emission of terpenes in tobacco plants (Roeder et al., 2007). Based on previous findings, we hypothesized that a lack of red light and phytochrome-mediated light/dark signaling on the part of the plant is responsible for an increase in terpene content in cannabis. The plant continues to synthesize terpenes, but a lack of red light to trigger the Pr-Pfr shift results in a lack of terpene emission by the plant, thus causing the terpenes to accumulate in the maturing flowers.
REFERENCES
Dudareva N, Pichersky E, Gershenzon J. Biochemistry of Plant Volatiles. Plant Physiology. 2004;135(4):1893-
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Flores, R.M., Doskey, P.V., Estimating Terpene and Terpenoid Emissions from Conifer Oleoresin Composition.
Atmospheric Environment. 2015. 113, 32-40.
Marinho, C.R.; Souza, C.D.; Barros, T.C.; Teixeira, S.P.; Dafni, A. Scent glands in legume flowers. Plant Biology ,
Volume 16 (1) – Jan 1, 2014
Roeder S, Hartmann AM, Effmert U, Piechulla B (2007) Regulation of simultaneous synthesis of floral scent terpenoids by the 1,8-cineole synthase of Nicotiana suaveolens. Plant Mol Biol 65: 107-12
This I have tested for myself and is undeniable. Coupled with keeping rh below 20% this closes the stomata on the leaf allowing transpiration only through the bud, not the leaf, after 72 hours boil the roots alive this will stress the stomata closed on leaves throughout the dry this gives a much more even/slower cure. Which is the key to the dry/cure. Keeping a strict 60/60 boiling roots almost doubled the time it took to dry.
People wanna talk about Bro Science go land a rocket on da moon and find a dinosaur bone in Kubricks studio.
From my understanding, the 48 hours of darkness was the biological trigger the plant has to begin the final chemical decomposition process, but i can't find that anywhere.
Both plants and animals go through onset and progress of certain processes leading to “aging” which ultimately causes death. Aging is defined as a degenerative biological change occurring over a period of time. Plants exhibit wide range of variations in life span, ranging from a week to few to many years. It is a common sight in temperate regions that the color of the leaves changes from green to yellow to orange or red before its final fall from the deciduous trees (Fig. 30.1). Such changes happen during the terminal phase of the life cycle of plants and are referred as senescence. Senescence is a self-digesting (autocatalytic) process controlled by environment and the genetic makeup of an organism. Changes taking place during this process are catabolic and thus irreversibly degenerative. Senescence is not just a passive decay of structural and biochemical machinery of cells; rather it is a precisely regulated series of events in which organelles, membranes, and macromolecules are broken down. Nutrients, like amino acids, sugars, and minerals, are reclaimed for export out of the senescing organ to other plant parts for later use. Nature is thus conservative as far as its precious resources are concerned. Another general term which is used for mechanisms underlying terminal events in the lives of a plant is programmed cell death (PCD). PCD is also a genetically determined developmental event which leads to elimination of a cell or cells. Such eliminations determine the final shape and habit of a plant. PCD occurs in a wide range of developmental processes. For example, development of unisexual flowers where cells destined to form male or female parts are selectively deleted (Fig. 30.2). Unlike PCD, senescence is a phase of aging process where metabolic processes are catabolic and eventually terminate in death.
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