back-X Ineffective in selecting mj heterosis

[syk613]

Hi WC I found the E Small you are talking about I think here is a list of the articles on the database, the last 2 are probably of most interest contact me and tell me which one/s you want and I will PM it to you.

 

Small E. The forensic taxonomic debate on Cannabis: semantic hokum. [Journal Article] Journal of Forensic Sciences. 21(2):239-51, 1976 Apr.

UI: 1262824

 

• •

2. Small E. American law and the species problem in Cannabis: science and semantics. [Historical Article. Journal Article] Bulletin on Narcotics. 27(3):1-20, 1975 Jul-Sep.

UI: 1041693

 

•

3. Small E. Letter: "Legal" species of cannabis. [Journal Article] Journal of Forensic Sciences. 20(4):739-41, 1975 Oct.

UI: 1176929

 

•

4. Small E. Beckstead HD. Common cannabinoid phenotypes in 350 stocks of Cannabis. [Journal Article] Lloydia. 36(2):144-65, 1973 Jun.

UI: 4744553

 

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5. Small E. Beckstead HD. Letter: Cannabinoid phenotypes in Cannabis sativa. [Journal Article] Nature. 245(5421):147-8, 1973 Sep 21.

UI: 4582664

 

Unfortunently the only one with an online abstract is the 1st reference.

[syk613]

@pipeman

The 1st ref is a bit simplistic and the 2nd seems interesting for other reasons take a look and tell me what you think and if you are interested and can't get the full paper then contact me.

 

Author/Editor/Inventor

HEMPHILL J K [a]; TURNER J C; MAHLBERG P G.

 

Institution

[a] DEP BIOL, INDIANA UNIV, BLOOMINGTON, INDIANA 47401, USA.

 

Title (English)

CANNABINOID CONTENT OF INDIVIDUAL PLANT ORGANS FROM DIFFERENT GEOGRAPHICAL STRAINS OF CANNABIS-SATIVA.

 

Source

Journal of Natural Products (Lloydia). 43(1). 1980. 112-122.

 

Abstract

Individual plant organs from different geographical strains of C. sativa were analyzed for their cannabinoid content by GLC. Analyses showed that different plant parts from each strain varied quantitatively in their cannabinoid content. Each plant part possessed a cannabinoid profile which characterized the chemical phenotype of that strain. Accumulation of a specific cannabinoid in high quantities that was uncharacteristic of that strain was found. Factors such as maturity of plant organ, sex of the plant, location of the plant organ on the plant and sampling procedures influenced the accumulation of cannabinoids. Pollen grains and seeds (intact or crushed) lacked detectable levels of cannabinoids. Based on these results, precautions that should be taken when accumulating data on the chemical phenotype of a Cannabis plant are discussed.

 

Author/Editor/Inventor

KHRYANIN V N [a]; CHAILAKHYAN M KH.

 

Institution

[a] KA TIMIRYAZEV INST PLANT PHYSIOL, ACAD SCI USSR, MOSCOW, USSR.

 

Title (English)

SEPARATE AND COMBINED EFFECT OF GROWTH REGULATORS ON SEX EXPRESSION IN HEMP CANNABIS-SATIVA.

 

Source

Fiziologiya Rastenii (Moscow). 26(2). 1979. 455-458.

 

Abstract

The effect of phytohormones separately and in various combinations with inhibitors and retardants on the sexualization of plants was studied in hemp (C. sativa). At the phase of 2-3 pairs of visible leaves the plants were cut and placed in solutions of water (control) or growth regulators (GA, chlorocholine chloride, 6-benzylaminopurine, abscisic acid, IAA and ethrel). GA accellerated the onset of budding by 8 days in comparison to controls. Chlorocholine chloride retarded and removed the stimulating effect of GA on budding in plants without leaves and had no effect on plants without roots. IAA and especially ethrel retarded the onset of budding in plants without roots by 2 and 5 days, respectively. The leading phytohormones in the expression of male and female gender in hemp were GA and the cytokinins, the action of which occurred simultaneously with other phytohormones and inhibitors.

[pipeman]

yeah to be honest they don't interest me that much. the first article just talkes about varying levels of cannbinoids in different parts of plant (leaf vs bud) and also between male and female plants, which everyone already knows. The 2nd article seems to be more about treatments which affect the onset of flowering, which isn't really what I was asking about either.

 

I'm not having a go at ya mate, I really appreciate the effort on your part, i just replied to tell ya what I thought since you asked me to in your post....

[wade ounce]

wow you people are amazing, i just wish i could understand it.

sorry to interupt your thread. i'm really wasted.

sorry

[pipeman]

its just a lot of fancy words disguising a few simple statements. for example...

 

Individual plant organs from different geographical strains of C. sativa were analyzed for their cannabinoid content by GLC. Analyses showed that different plant parts from each strain varied quantitatively in their cannabinoid content. Each plant part possessed a cannabinoid profile which characterized the chemical phenotype of that strain. Accumulation of a specific cannabinoid in high quantities that was uncharacteristic of that strain was found. Factors such as maturity of plant organ, sex of the plant, location of the plant organ on the plant and sampling procedures influenced the accumulation of cannabinoids.

 

this paragraph basically says three things:

 

plants are more potent if picked at peak maturity....duh

females have more THC than males....double duh

buds are more potent than leaf....triple duh

[syk613]

Yeah pipeman I can see how none of the ref I have posted answer your question, the 1st one above talks about THC levels in different positioned buds

location of the plant organ on the plant

but yeah this ain't that helpful and other than that it just confirms what is known already by most, except the seed part at the end. The 2nd while totally unrelated looked like it may be of some interest to you or the community and I think it is saying a little more than just speeding up buding but influencing the sex of plants imo ( maybe useful to seed growers) I should have posted it in a new thread with the anatomy of the trichome.maybe later

Unforetunely this is the only paper that remotely resembled your request, most are med articles or adverse effects.

it is the 1st time I have looked at the research and there is so much it is a bit overwhelming as I am searching under a very broad keyword and I am only up to 1980 so bear with me it may take a little longer to get anything remotely helpful, but in truth I think the practical knowledge of growers (on OS and elsewhere) will provide you with far more useful info for a small grow imo. But I am looking anyway so if I come across anything I will post it. Hopefully when I get to the '90's some better info will appear.Cheers mate and no worries I don't get offended easily esp when it is something like this.

 

 

@wade ounce

if you have a question or need an explanation just post your request and if I can't answer it I am sure others will be able to.

Edited November 10, 2003 by syk613

[wade ounce]

augggggggggghhhhhhhhh.pipeman you're messin with my head man.

o.k those three sentences i understood,cheers.

oh cheers syk613. i probably will throw a few question to you's thanks guys

[syk613]

Yeah man you can never know too much about something that is an integral part of your life... shit I know if I didn't luv mj I wouldn't have become a member of OS and don't worry about pipeman he is the sites resident comic you can always rely on him for a laugh but his sense of humour is a bit dry sometimes and yeah the article he was talking about had very simplistic ideas that most, if not all, of us already know but some of the other articles are quite complex and most if not nearly all of the ppl reading these will probably not totally understand them, however that being said the level of comprehension of some ppl here is more than surprising .So fire away if you have a query and I answer it I will back it up with a reference and if I can't I will say so. Cheers mate