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OfflineDamion5050
Perscribing Mushrooms Is Fun
Male

Registered: 03/28/10
Posts: 67
Last seen: 7 years, 6 months
Re: Question about sex of plants [Re: FarBeyondDriven]
    #394866 - 04/02/10 09:36 PM (14 years, 11 months ago)

Great info guys even for my noob ass lol.


--------------------
AMU - Q&A
MY GROW LOG
MY ELEMENTARY COIR TEK
EVERYTHING YOU NEED TO CULTIVATE MUSHROOMS

Live well, laugh often, love much.  --  Stand up for what you believe in, even if it means standing alone.  --  Dont follow the beaten path. Go your own way and leave a trail.

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OfflineDamion5050
Perscribing Mushrooms Is Fun
Male

Registered: 03/28/10
Posts: 67
Last seen: 7 years, 6 months
Re: Question about sex of plants [Re: FarBeyondDriven]
    #394875 - 04/02/10 09:49 PM (14 years, 11 months ago)

Yeah I only have 2 grows under my belt and both where about 8 years ago when I was young and trying to grow out of my closet in my apt way back when lol.  I am about to start growing once I move and get my card !!


Question.  U guys say u can stress a female to get her to drop seeds that will then be females.  I was wondering the easiest way to go about doing that ?  Just for future reference lol.


--------------------
AMU - Q&A
MY GROW LOG
MY ELEMENTARY COIR TEK
EVERYTHING YOU NEED TO CULTIVATE MUSHROOMS

Live well, laugh often, love much.  --  Stand up for what you believe in, even if it means standing alone.  --  Dont follow the beaten path. Go your own way and leave a trail.

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OfflineDamion5050
Perscribing Mushrooms Is Fun
Male

Registered: 03/28/10
Posts: 67
Last seen: 7 years, 6 months
Re: Question about sex of plants [Re: Pilze]
    #394883 - 04/02/10 09:56 PM (14 years, 11 months ago)

wow that seems aweful easy lol does it matter wether you are in the beginning or ending parts of the flowering stage ?


--------------------
AMU - Q&A
MY GROW LOG
MY ELEMENTARY COIR TEK
EVERYTHING YOU NEED TO CULTIVATE MUSHROOMS

Live well, laugh often, love much.  --  Stand up for what you believe in, even if it means standing alone.  --  Dont follow the beaten path. Go your own way and leave a trail.

Extras: Unfilter Print Post Top
OfflineDamion5050
Perscribing Mushrooms Is Fun
Male

Registered: 03/28/10
Posts: 67
Last seen: 7 years, 6 months
Re: Question about sex of plants [Re: Pilze]
    #394887 - 04/02/10 09:57 PM (14 years, 11 months ago)

:thumbup:

Thx.. I will have to do that then once I know I got a female I will have to stress out on of the cuttings when the time comes.


--------------------
AMU - Q&A
MY GROW LOG
MY ELEMENTARY COIR TEK
EVERYTHING YOU NEED TO CULTIVATE MUSHROOMS

Live well, laugh often, love much.  --  Stand up for what you believe in, even if it means standing alone.  --  Dont follow the beaten path. Go your own way and leave a trail.

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OfflineDamion5050
Perscribing Mushrooms Is Fun
Male

Registered: 03/28/10
Posts: 67
Last seen: 7 years, 6 months
Re: Question about sex of plants [Re: FarBeyondDriven]
    #394895 - 04/02/10 10:02 PM (14 years, 11 months ago)

LoL.  Well it's not lol deprive her of light and we are good to go. :thumbup:


--------------------
AMU - Q&A
MY GROW LOG
MY ELEMENTARY COIR TEK
EVERYTHING YOU NEED TO CULTIVATE MUSHROOMS

Live well, laugh often, love much.  --  Stand up for what you believe in, even if it means standing alone.  --  Dont follow the beaten path. Go your own way and leave a trail.

Extras: Unfilter Print Post Top
OfflineDamion5050
Perscribing Mushrooms Is Fun
Male

Registered: 03/28/10
Posts: 67
Last seen: 7 years, 6 months
Re: Question about sex of plants [Re: Fick]
    #395331 - 04/03/10 03:30 PM (14 years, 11 months ago)

I don't know a lot about the specifics for cannabis, but there seems to be some confusion among people about the process of passing along sex characteristics in general. It is simple genetics when you force a plant to hermaphrodize (is that a word?) that will give you female offspring.

Natural hermaphrodite should not be reproduced because that is a genetic flaw. The plant's genes have a defect giving it a XXY chromosome. It will potentially pass this along to nearly all of its young (I think the chance would only be 1 in 4 that it might not pass along the genetic defect since it is breeding with itself, and it might be 0% that it will not pass it on, I'd have to look more at the specifics of these plants because it depends on HOW it divides its sex chromosomes). So, if you get a hermaphrodite plant under idea growing conditions, what that plant is is a genetically defective freak and it needs to be prevented from cross-pollinating your other plants, and the seeds would most likely be more hermies. You might be able to pull the male plant parts off regularly to reduce seeding and make worthwhile buds for use, but any seeds should be discarded or you will just get more of the same.

Genetic freaks aside, a female has XX chromosomes and a male has XY chromosomes. When you breed, the odds of getting males to females (genetically) is 50/50:

X1X2+X1Y1

Results in these possible combinations in the offspring (colour coded to clarify) taking half the genetic material each from the mother and
the father:

X1X1 X1Y1 X2X1 X2Y1

In other words, 50% male and 50% female. In most species, plant and animal, males are slightly less strong genetically resulting in a slightly lower survival rate (all to do with dominant and recessive genes and a more detailed explanation is beyond the intended purpose of this message). Females being homogametic, in other words having two identical XX chromosomes, have 2 shots at overcoming flaws where their heterogametic (XY) male counterparts have only 1, where faulty genes don't have an exact corresponding "countering" gene on the other half of their sex chromosome pair. When you introduce substances, be they hormones or aspirin or something else, you are effectively weakening the already slightly less robust male genetic material (Y chromosomes) and trying to approach a survival rate of 0% for sperm (in this case in the form of pollen) that carries a Y. Obviously, this could (and probably does in most cases) also kill off weaker sperm with X chromosomes and could ALSO introduce flaws in the genes if harm is done to the female sperm that do survive - especially if extremely strong hormones are used.

When a genetically female plant is forced by a threat to its survival to turn into a hermaphrodite, it is not a true hermaphrodite genetically. It is STILL a female plant. Obviously, the fact that it has the ability to produce sperm under extreme circumstances is also a genetic trait it carries, but this is actually not a bad thing as ultimately this could be a trait that could win out in a survival of the fittest scenario in the wild. The sperm/pollen produced by the plant cannot carry anything but the genetic material of that plant itself. Since the plant is female, it does not have a Y chromosome to pass along to the eggs to produce male plants and in complete isolation the seeds cannot be anything BUT female seeds, as shown below:

X1X2+X1X2

Results in these possible combinations in the offspring (colour coded to clarify) taking each half of the genetic material for each seed from only the mother:

X1X1 X1X2 X2X1 X2X2

There are no Ys to be had to specify male characteristics. However, there IS the trait that the plant will produce pollen and self-fertilize under stress that will be passed along in an absolute MINIMUM of 50% of the seeds, depending on which part of the cannabis DNA carries that trait. In theory, if you had several females that were stressed and produced pollen and they cross fertilized, you could be actually breeding plants with an increased likelyhood of stress hermaphrodism by having this trait carried on both halves of the genetic material which is joined to make a seed. That's really only a problem if you continue to subject your future generations of plants to stress, and the only real problem for the grower is that they are going to get more seeds and less sensimilla flowers.

Ugh... well, I am sure this is a clear as mud now, but I don't know how to simplify it any more. Just remember that sex cells - eggs and sperm - are haploid cells made of half the plant's own genetic material and therefore can only have in them whatever the plant has for DNA. Join the haploid egg and sperm together and you get a diploid cell which hopefully results in a viable offspring carrying half of each parent's DNA. One parent, or asexual reproduction, means that the offspring can only contain the DNA of that single parent (although potentially in slightly different arrangements as shown above).

It is pretty ridiculous for anyone to suggest you are somehow weakening the plants to do any of this, except perhaps if you go overboard on screwing with hormones and actually do genetic damage. Using aspirin or whatever is technically simply culling male-chromosome carrying sperm and realistically means you are ensuring only the strongest sperm survive, which usually is a positive thing. Forcing plants to self-pollinate with stress is simply reproducing a trait which is already there in that plant's offspring. As long as you don't stress the plants that grow from the seeds produced this way, you aren't changing anything other than the rearrangement of the DNA configuration - which is what happens every time a plant reproduces sexually anyway.


--------------------
AMU - Q&A
MY GROW LOG
MY ELEMENTARY COIR TEK
EVERYTHING YOU NEED TO CULTIVATE MUSHROOMS

Live well, laugh often, love much.  --  Stand up for what you believe in, even if it means standing alone.  --  Dont follow the beaten path. Go your own way and leave a trail.

Edited by Damion5050 (04/03/10 03:35 PM)

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