Do Indoor Plants Know What Season It Is Outside?

Guitar Man

Guitar Man

Well-Known Member
I have written down everything about my Indoor Grows. One interesting point is, I've noticed that my Plants seem to respond to the time of year, even though they are in a "Closet Grow".

Since my air flow (exhaust) is directed out my roof, air, sound, and other possible elements could be sensed by the plant. For instance, when lights are out and the girls are going through the night cycle, air can easily be drawn into the closet through my ventilation, especially when I turn on the Home inside Central Heating system and my exhaust fan is off.

This would mean that cooler air would draw in during the Winter months vs. the Fall or Spring months. If my plants are approaching the final stages of flowering, this cooler air would give the plants a better "Signal" of reality, leading to a more natural Bud Development.

In my journal, I have noticed that my finished buds at the end of December seem more potent and dense than the buds that finish at the end of March. My Theory being, that the plant senses a "Beginning" in March instead of a "Finish".

Another reason I question this is, other living things in Nature respond to certain times, even though they are completely caged and blinded from the outside. If you put a Rooster in a box and completely block all light, that Rooster will crow at the crack of dawn without seeing the sun and knowing what time of day it is.
 
Nizza

Nizza

Well-Known Member
i thought i knew what the circadian rhythm was until reading parts of that...
i think what it's saying is the circadian rhythm for plants is determined by light cycles and what color light it's getting. And also that there is an internal "pacemaker" that also helps with the circadian rhythm of the plant.

"Plant circadian rhythms tell the plant what season it is and when to flower for the best chance of attracting pollinators. Behaviors showing rhythms include leaf movement, growth, germination, stomatal/gas exchange, enzyme activity, photosynthetic activity, and fragrance emission, among others.[SUP][29][/SUP] Circadian rhythms occur as a plant entrains to synchronize with the light cycle of its surrounding environment. These rhythms are endogenously generated and self-sustaining and are relatively constant over a range of ambient temperatures. Important features include two interacting transcription-translation feedback loops; proteins containing PAS domains, which facilitate protein-protein interactions; and several photoreceptors that fine-tune the clock to different light conditions. Anticipation of changes in the environment allows appropriate changes in a plant's physiological state, conferring an adaptive advantage.[SUP][30][/SUP] A better understanding of plant circadian rhythms has applications in agriculture, such as helping farmers stagger crop harvests to extend crop availability and securing against massive losses due to weather.Light is the signal by which plants synchronize their internal clocks to their environment and is sensed by a wide variety of photoreceptors. Red and blue light are absorbed through several phytochromes and cryptochromes. One phytochrome, phyA, is the main phytochrome in seedlings grown in the dark but rapidly degrades in light to produce Cry1. Phytochromes B–E are more stable with phyB, the main phytochrome in seedlings grown in the light. The cryptochrome (cry) gene is also a light-sensitive component of the circadian clock and is thought to be involved both as a photoreceptor and as part of the clock's endogenous pacemaker mechanism. Cryptochromes 1–2 (involved in blue–UVA) help to maintain the period length in the clock through a whole range of light conditions.[SUP][29][/SUP][SUP][30][/SUP]
The central oscillator generates a self-sustaining rhythm and is driven by two interacting feedback loops that are active at different times of day. The morning loop consists of CCA1 (Circadian and Clock Associated 1) and LHY (Late Elongated Hypocotyl), which encode closely related MYB transcription factors that regulate circadian rhythms in Arabidopsis, as well as PRR 7 and 9 (Pseudo-Response Regulators.) The evening loop consists of GI (Gigantea) and ELF4, both involved in regulation of flowering time genes.[SUP][31][/SUP][SUP][32][/SUP] When CCA1 and LHY are overexpressed (under constant light or dark conditions) plants become arrhythmic, and mRNA signals reduce, contributing to a negative feedback loop. cca1 and lhy gene expression oscillates and peaks in the early morning, while TOC1 gene expression oscillates and peaks in the early evening. While it was previously hypothesised that these three genes model a negative feedback loop in which over-expressed CCA1 and LHY repress TOC1 and over-expressed TOC1 is a positive regulator of CCA1 and LHY,[SUP][30][/SUP] it was shown in 2012 by Andrew Millar and others that TOC1 in fact serves as a repressor not only of cca1, lhy, and prr7 and 9 in the morning loop, but also of gi and elf4 in the evening loop. This finding and further computational modeling of TOC1 gene functions and interactions suggest a reframing of the plant circadian clock as a triple negative-componentrepressilator model rather than the positive/negative-element feedback loop characterizing the clock in mammals.[SUP][33]"[/SUP]
 
JohnDee

JohnDee

Well-Known Member
Phew, that was a little overwhelming. I'm not sure about season...but I fully believe that plants can sense the phases of the moon. I'm not getting all astrological, nor do I have any idea how this might fit into your previous theories. Perhaps there are variations to the lunar phases that only plants can sense.
JD
 
B

Bear Country

Well-Known Member
Guitar Man said:
I have written down everything about my Indoor Grows. One interesting point is, I've noticed that my Plants seem to respond to the time of year, even though they are in a "Closet Grow".

Since my air flow (exhaust) is directed out my roof, air, sound, and other possible elements could be sensed by the plant. For instance, when lights are out and the girls are going through the night cycle, air can easily be drawn into the closet through my ventilation, especially when I turn on the Home inside Central Heating system and my exhaust fan is off.

This would mean that cooler air would draw in during the Winter months vs. the Fall or Spring months. If my plants are approaching the final stages of flowering, this cooler air would give the plants a better "Signal" of reality, leading to a more natural Bud Development.

In my journal, I have noticed that my finished buds at the end of December seem more potent and dense than the buds that finish at the end of March. My Theory being, that the plant senses a "Beginning" in March instead of a "Finish".

Another reason I question this is, other living things in Nature respond to certain times, even though they are completely caged and blinded from the outside. If you put a Rooster in a box and completely block all light, that Rooster will crow at the crack of dawn without seeing the sun and knowing what time of day it is.
Click to expand...
I dont believe they know the difference. I do know with 100% certainty that plants do respond to thier micro climate. So even if you have minor differences within your grow room from last grow to this grow...believe me, your plants will know but its not because they know that shit is happening outdoors and they sense that they are indoors. I grow outdoors as well as indoors. I have seen the same strain from the same breeder...stable genetics, grow completly different from one year to the next...it was not because of unstable genetics but rather because the outdoor micro climate was different from one year to the other. Micro Climate is key in any indoor set up!! Dial your indoor grow for optimum conditions to grow cannabis and you will have consistant results whether its summer or winter.

You can control what happens in your indoor operation but mother nature calls the shots outdoors!!

Bear
 
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