Cloning a vegitating plant??

Well IMO I think that the 50/50 part is applied when the seed gets pollinated. You technically plant either male or female seeds. But like you said certain environmental factors do help to influence sex.

Higher lvls of nitrogen, lower temps, high humidity, more blue light, and less over all stress (timer mess ups etc) are said to increase the chances of females. According to Marijuana Horticulture. Oh I just read that it kicks in when it has three pairs of true leaves.

Iono if this helps or not...im toasted lol

 

you cant change a plants sex from seed no matter what you do. It's all genetic.

all this talk of being able to make more females due to conditions is total misinformation.

a clone is a copy of the plant it was taken from. if that plant was a male the clone will be male, and vice verse. every clone will be the same sex as the mother/father plant.

 

not 100% true, no offense. Taken from wikipedia

"Cannabis has been described as having one of the most complicated mechanisms of sex determination among the dioecious plants.[63] Many models have been proposed to explain sex determination in Cannabis.
Based on studies of sex reversal in hemp, it was first reported by K. Hirata in 1924 that an XY sex-determination system is present.[61] At the time, the XY system was the only known system of sex determination. The X:A system was first described in Drosophila spp in 1925.[64]

Soon thereafter, Schaffner disputed Hirata's interpretation,[65] and published results from his own studies of sex reversal in hemp, concluding that an X:A system was in use and that furthermore sex was strongly influenced by environmental conditions.[62]"

Also taken from wikipedia

"Environmental sex determination is known to occur in a variety of species.[73] Many researchers have suggested that sex in Cannabis is determined or strongly influenced by environmental factors.[62] Ainsworth reviews that treatment with auxin and ethylene have feminizing effects, and that treatment with cytokinins and gibberellins have masculinizing effects.[56] It has been reported that sex can be reversed in Cannabis using chemical treatment.[74] A PCR-based method for the detection of female-associated DNA polymorphisms by genotyping has been developed.[75]"

Link = Cannabis - Wikipedia, the free encyclopedia

Wasnt trying to be a smartass or anything, sorry if it came off that way. Just thought id share.

EDIT: However, taking a cuting from a young plant, and throwing it into flower cycle is a semi accurate way to find out what the sex of that plant is. I would say this method is atleast 90% accurate, but is largely dependant on how much stress you put your plant through.

 

thats 2 scientist being quoted from wikepedia, which is written by users.

All the research i have done tells me time and time again that MJ is genetically driven and you cant change sex midstream. Agree to disagree all you want but ive never seen a plant change sex on me.

 

I wasnt questioning your research, only showing the research that ive found. Agreed that wikipedia isnt always 100% accurate (but is usually pretty dead on). Ill dig some more, and see if I can find any evidence (one way or the other) that is more credible.

Please dont think that im just trying to prove you wrong or anything, im not, im all about spreading peace. Im just generally curious now.

EDIT: I have heard of many peoples plants becoming hermaphrodites if put through too much stress though, and this isnt an uncommon thing. These hermies differ from normal ones though. In a natural hermaphrodite the pistols and pollen sacs are close together, usually at the same site. In a stress induced hermie theyre usually located at different sites.

 

i agree that a plant can be forced hermie. this is a survival tactic genetically engraved in all MJ. A hermie however is not a female changing into a male.

 

Link = Marijuana Botany Chapter 3 - Genetics and Breeding of Cannabis

"Galoch (1978) indicated that gibberellic acid (GA3) promoted stamen production while indoleacetic acid (IAA), ethrel, and kinetin promoted pistil production in prefloral dioecious Cannabis. Sex alteration has several useful applications. Most importantly, if only one parent expressing a desirable trait can be found, it is difficult to perform a cross unless it happens to be a hermaphrodite plant. Hormones might be used to change the sex of a cutting from the desirable plant, and this cutting used to mate with it. This is most easily accomplished by changing a pistillate cutting to a staminate (pollen) parent, using a spray of 100 ppm gibberellic acid in water each day for five consecutive days. Within two weeks staminate flowers may appear. Pollen can then be collected for selfing with the original pistillate parent. Offspring from the cross should also be mostly pistillate since the breeder is selfing for pistillate sexuality. Staminate parents reversed to pistillate floral production make inferior seed-parents since few pistillate flowers and seeds are formed.

If entire crops could be manipulated early in life to produce all pistillate or staminate plants, seed production and seedless drug Cannabis production would be greatly facilitated.

Sex reversal for breeding can also be accomplished by mutilation and by photoperiod alteration. A well-rooted, flourishing cutting from the parent plant is pruned back to 25% of its original size and stripped of all its remaining flowers. New growth will appear within a few days, and several flowers of reversed sexual type often appear. Flowers of the unwanted sex are removed until the cutting is needed for fertilization. Extremely short light cycles (6-8 hour photoperiod) can also cause sex reversal. How ever, this process takes longer and is much more difficult to perform in the field."

In a way, even if this information is accurate (which im assuming it is, could be wrong), I still think we were both right. I dont think any grower is gona go to these extremes to reverse the sex of a plant (unless they really need a male or female of a certain strain and are serious breeders).

Still, according to that website, it is possible. They look pretty legit to. A whole lot of interesting information on that site if you feel like reading it (a bit hard to follow at times without knowing quite a bit about botony though).

 

thanks for jumping in and reinforcing my point budslinger. I gave up... Arguing on the internet is like running in the special Olympics. Even if you win, you're still a retard.

 

Im not so egotistical that I cant admit when I might be wrong After doing more current research, apparently those methods described above are used to create hermies (and are how we get feminized seeds). Atleast according to the cannabible3.

But creating hermies wasnt the goal heh.