Seed Predisposition

This is a very strong subject at the moment... and also one I am yet to recieve any satisfactory answers for. Are seeds pre-disposed to be one sex or the other? To my mind, seed pre-disposition means that the seed will have one stronger chromosome than the other. In other words, cannabis will have both chromosomes, but either the male or female chromosome will be dominant, with the other dormant (I believe this is in degrees)

If we don't agree that seeds are pre-disposed, then what does this leave?
This leaves a-sexuality, and hermaphroditism. Hermaphroditism is when both chromosomes are of equal dominance in the plant. It is also presently believed that the hermaphrodite 'gene' is stronger than either just male or female on it's own (this info' came from a breeder, i haven't checked it out). So, for me, this rules out hermaphroditism as a possibility.

We are now left with a-sexuality... my understanding of this is limited. Although, to my mind asexuality, is when a life-form has no sexual organs... Could cannabis actually be born a-sexual? and then decide from the environment what sex it is going to be? I doubt this. I doubt it because over the years we have noticed that, for the most part, male and female plants have different growth patterns. Males tall and thin, fem's short and bushy.

So, I think that seeds are pre-disposed to be one sex or the other... and that if this is the case. For 24/0 to have an effect on male/female ratios would mean the plant would have to do a complete sex reversal. one chromosome would need to go from dormant to dominant, just because of the longer day? I'll have to leave it here, there is more tucked away...

i dont understand.
isnt 1 seed going to be male? and 1 seed be female?. and due to envo. a female will/may turn hermie or not. unless it was a hermie to start with.

seeds are predisposed.

Excellent. Now we agree on that. Why would cannabis do a complete sex reversal under 24/0?

skunkushybrid said:

Excellent. Now we agree on that. Why would cannabis do a complete sex reversal under 24/0?

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i've never physically seen it happen. i've seen "true" hermies. male on one side female on the other. i've seen 1 or 2 single male flowers on a finishing female. but i have NEVER seen a plant "reverse" sex. what exactly is this?

when i was looking for fem seeds. on a web site. it said that 24/0 made more hermies, and it would be better to do 18/6. i cannot see the diff. if they wernt hermie to start with, are they saying that diff. lite cycles, change a plants sex. i dont understsnd.

fdd2blk said:

i've never physically seen it happen. i've seen "true" hermies. male on one side female on the other. i've seen 1 or 2 single male flowers on a finishing female. but i have NEVER seen a plant "reverse" sex. what exactly is this?

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well, if a seed is predisposed to be one sex or the other how can it be that the environment can play a part in how many males there are? For this to happen, a pre-disposed plant must complete a full sex reversal.

There's a lot of bullshit on the web about this. Videoman was the first to bring it to this site. I argued with him then... but more and more this bullshit is spreading. I think it needs to be talked out.

skunkushybrid said:

well, if a seed is predisposed to be one sex or the other how can it be that the environment can play a part in how many males there are? For this to happen, a pre-disposed plant must complete a full sex reversal.

There's a lot of bullshit on the web about this. Videoman was the first to bring it to this site. I argued with him then... but more and more this bullshit is spreading. I think it needs to be talked out.

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who said this? has it been proven in a controlled environment? by who? i want sound proof.

crazy-mental said:

when i was looking for fem seeds. on a web site. it said that 24/0 made more hermies, and it would be better to do 18/6. i cannot see the diff. if they wernt hermie to start with, are they saying that diff. lite cycles, change a plants sex. i dont understsnd.

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i don't understand either. if the environment can determine the outcome of the sex then why bother with feminized seeds?

marijuana growing seems to have more urban legends then the burbs themselves.

fdd2blk said:

i don't understand either. if the environment can determine the outcome of the sex then why bother with feminized seeds?

marijuana growing seems to have more urban legends then the burbs themselves.

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Yes, but these are myths spread by very respected breeders. They say, "red light causes more males" they say "24/0 causes more males".

Just like you I wanted to see evidence of this. How could they test it in the first place? How long would it take for them to be sure? 50/50 evens out in the end, but when is the end? A 50/50 ratio seems the most likely to me, no matter the environment.

Yet, on this site people regularly feed these myths. Do a certain thing with your lights and you get more fem's. Yeah right. I'm not convinced.

skunkushybrid said:

Yes, but these are myths spread by very respected breeders. They say, "red light causes more males" they say "24/0 causes more males".

Just like you I wanted to see evidence of this. How could they test it in the first place? How long would it take for them to be sure? 50/50 evens out in the end, but when is the end? A 50/50 ratio seems the most likely to me, no matter the environment.

Yet, on this site people regularly feed these myths. Do a certain thing with your lights and you get more fem's. Yeah right. I'm not convinced.

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you'd have to grow out literally 1000's of seeds from the exact same seed stock from predetermined stable parents. male and female. under controlled environments. with the exact same conditions other then what you are testing for. sounds like BS to me.

if my wife would have stood on her head while pregnant then we would have had a girl.


something like that?

Exactly like that. I'm just waiting for some supporters of 18/6 to come and argue this point about 24/0 causing more males.

fdd2blk said:

i don't understand either. if the environment can determine the outcome of the sex then why bother with feminized seeds?

marijuana growing seems to have more urban legends then the burbs themselves.

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yes thats what i think. i dont get it. either the thing is or it isnt. there just using the lite thing as a scapegoat. somthing to blame. when the seed doesnt do, what it says. fucking.99.9% fems. bollocks.

at the end of the day.
a seed is what it is. i dont think,that under certain cons, that it cud change. plus i think that fem seeds are a load of rubbish. there trying to puzzle us with science.if you ask me.

environment plays a big part in determining a lot of organisms sex ..turtles, water fleas, frogs, reptiles, fish, and many plants ... it is all about survival. while i don't claim to know the process in marijuana, i do think environment plays a big part. it makes sense to have more female plants when conditions are good for growing and breeding, and not so many when things turn for the worse. they are more fit to survive. think about it plants have been around millions of years to evolve ... so even our lovely bud we smoke comes from a plant that had parents, that had parents, that had parents ... which were never eaten, stomped on or generally killed off since the beginning of time. that is till now as it goes out in a puff of smoke. god bless.

Ah, Now you use the word predetermination. Where does this predetermination take place? In the egg, or when the creature is already born?

"Look, we have a girl... No, wait. Global Warming has turned it into a boy!"

It is actually a tested and proven BY REALL SCIENTISTS AND PROFESSORS that many species of plants sex is influenced by environmental factors. There may not have been much testing with marijuana plants but there has been tons of testing done with other species of plants. So if it is true for other species of plants I believe that it could be true for marijuana as well.

Where is your evidence or proof that a seeds sex is 100% predetermined from seed.


also Id just like to add that cannot compare plants to humans or anything else.

"Ah, Now you use the word predetermination. Where does this predetermination take place? In the egg, or when the creature is already born?"

sorry but he used the word DETERMINING not PREdetermining....BIG difference.

There is a bunch of evidence that environmental stress (stress can be good or bad by the way) plays a factor in the final sex of a plant.

Skunk if you really want to say these are myths do a test, abuse the shit out of some plants and keep them on 24/0 then switch them to 12/12 see how many females you get compared to a room with plants on 12/12 from seed, I bet you will get more females in the 12/12 room because my friends dad has been growing for years and has ALWAYS gotten a greater percentage of females with his female winter crop (the plant is on 12/12 from seed)

You have no reason to at this point in time to call this information mythical or "bullshit" because you have done NOTHING to prove otherwise.

I would like to end this by saying that I am obviously no professional and neither are you so lets leave it to them to decide what is fact or fiction and at the moment MOST profesional growers say that environmental stress effects growth.

I personally have no idea whats true or not at the moment.

I agree with email - If only it were legal we would have tons of truly scientific evidence and sharing of information reviewed by qualified people instead of all these armchair quarterback threads which amount to nothing more than a battle of superstitions and egos.....

crazy-mental said:

at the end of the day.
a seed is what it is. i dont think,that under certain cons, that it cud change. plus i think that fem seeds are a load of rubbish. there trying to puzzle us with science.if you ask me.

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Sorry but female seeds are real.