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Chemistry of Marijuana 101
bl1959

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Dec-13-2006
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Message #4930 posted by bl1959 (Info) January 24, 2007 00:04:02 ET

Just wanted to start a post on the chemistry of marijuana. See what information could be consolidated. I'm interested in methods of analysis, THC content, strain ID etc. If anybody has knowledge or links I'd love to learn. Thanks.



Re: Chemistry of Marijuana 101
bl1959

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Message #4931 posted by bl1959 (Info) January 24, 2007 23:32:12 ET
In Reply to: Chemistry of Marijuana 101 posted by bl1959 (Info) January 24, 2007 00:04:02 ET

http://www.druglibrary.org/schaffer/library/studies/canadasenate/vol1/chapter5_thc_concentrations.htm



Re: Chemistry of Marijuana 101
bl1959

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Message #4932 posted by bl1959 (Info) January 25, 2007 23:08:13 ET
In Reply to: Chemistry of Marijuana 101 posted by bl1959 (Info) January 24, 2007 00:04:02 ET

As far as THC content of marijuana goes I was wondering if anyone knows what is the greater contributing factor, genetics/species or environmental factors concerning the growth of the plant.

As for species identification I was wondering if pcr was a viable method. The method linked below is for amplification of extremely small amounts of thc (like in roots) but it doesn't sound like a method to determine say kush from NL.
http://www.cmj.hr/2003/44/3/12808725.pdf





Re: Chemistry of Marijuana 101
takeachance
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Dec-07-2001
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Message #4933 posted by takeachance (Info) January 26, 2007 00:19:32 ET
In Reply to: Re: Chemistry of Marijuana 101 posted by bl1959 (Info) January 25, 2007 23:08:13 ET

I will need some time to decifer the pdf verbage but just a note.

You can grow using clones from the same plant under weak flourescents and an HPS and you will get better output and better bud from the HPS. Meaning, given the same plant, environment has the biggest effect on your crop. So whatever genetics you get, give it the best environment possible.

Now with that said, from experience I have found that the amount of THC is not necessarily the property that will determine the best effect. White Widow has an enourmous amount of THC comparably but for the life of me I cannot play (or convince myself that I can play) the guitar while on it. It has a "giddiness" effect that interfers with body functions. While I am higher than a kite on the WW and love it, there are many things I don't want to do when I am on it. Now with a sativa, preferably Super Silver Haze, the "stoneder" I get the better I can play (or at least think I can play) the guitar.

Then there is the tolerance you build up with some weed, especially indica types I think. But I find that a good sativa will get you high everyday the same way. Then again, I don't smoke a quarter or more everyday like I have seen some people do. 3 joints max would do me all day; but if I only had 3 joints, I could make it last a week.

A few years ago, when you could get seeds (and weed) in the mail, I tried a number if different kinds and when I found the brand I liked, I kept cloning. Super Silve Haze, my fav. Just a hint of "what was that?" out of the corner of my eye and always a smile on my face.

Lesson...if you find a seed in a good bag of weed, keep it. Oh, and there are people, smart people IMO on this board that bad mouth hermis, but I can tell you there ain't nothing like a bag of seed that don't put out nothing but females. And if you don't want seeds from a hermi, pluck off the balls as you check periodically. Although, one of the best WW highs was from male leaves, dark green and oh so smelly. I wish I hadn't killed it and kept it in the breeding stock.

So on the genetics side, you have to be smart enough to know when you have your hands on it, then to keep it through either cloning or seeds.

Good luck.




Re: Chemistry of Marijuana 101
bl1959

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Message #4937 posted by bl1959 (Info) January 29, 2007 23:36:20 ET
In Reply to: Re: Chemistry of Marijuana 101 posted by takeachance (Info) January 26, 2007 00:19:32 ET

Hey Take, how's it going. I could never get the hang of the guitar, so maybe Silver Haze might help. LOL. I'm kind of wondering if there is something in the genetic makeup of the plant which could identify a particular strain. They are doing some amazing things with pcr technology these days, but I'm not sure if the genome of the cannabis is completely mapped. There's probably some scientist in South America working on it. As far as THC goes, there is no doubt that it does not set the entire effect of the medication. THC is a known chemical structure and if purified completely it would be impossible to tell which kind of plant it came from.
The following article tells about the use of a vaporizer. Pretty cool stuff.
http://www.canorml.org/healthfacts/vaporizerstudy1.html
Catch you later.




Re: Chemistry of Marijuana 101
bl1959

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Dec-13-2006
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Message #4938 posted by bl1959 (Info) January 29, 2007 23:38:50 ET
In Reply to: Re: Chemistry of Marijuana 101 posted by bl1959 (Info) January 29, 2007 23:36:20 ET

Wrong link. Try
http://www.maps.org/mmj/pr5.02.03.html




Stardate 2000 and something
bl1959

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Dec-13-2006
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Message #4941 posted by bl1959 (Info) February 17, 2007 13:28:02 ET
In Reply to: Re: Chemistry of Marijuana 101 posted by bl1959 (Info) January 29, 2007 23:38:50 ET

This weeks lesson.

http://www.geocities.com/SunsetStrip/amphitheatre/5796/botany3.htm

Enjoy at your leisure. Quiz on friday.




Re: Stardate 2000 and something
bl1959

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Dec-13-2006
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Message #4942 posted by bl1959 (Info) February 17, 2007 13:42:43 ET
In Reply to: Stardate 2000 and something posted by bl1959 (Info) February 17, 2007 13:28:02 ET

Not really just wanting to hear myself typing. Honestly.

Only the sections up to and not including "Cannabis is needed" will be covered.




Quiz 1
bl1959

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Dec-13-2006
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Message #4944 posted by bl1959 (Info) February 22, 2007 23:15:46 ET
In Reply to: Re: Stardate 2000 and something posted by bl1959 (Info) February 17, 2007 13:42:43 ET

Essay: (50 words or less)

Do you think legacy strains should try to be maintained? and if so who or whom is in the best position to monitor strain history?

Extra Credit

Haploid number of chromosomes = _______

A common technique used to deduce the genotype of
the parents is the __________.




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