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Feminizing Method I Read About???

Discussion in 'General Marijuana Growing' started by livenhigh, Mar 30, 2007.


    livenhigh Active Member

    i read that if you flower a female plant to the bitter end she will produce pollen sacks, the polen is according to what i read supposed to make all female seeds in order to ensure speices survival, is this in fact a tried tested and truely simple way of garenteed female seeds? or will it a MOSTLY or what can someone give there 2 cents on this.


    CannaBoss Well-Known Member

    Yes, it's called "selfing". During stressful growing conditions, some dioecious cannabis strains will prduce a male pollen flower. But that pollen is made up of female DNA so the seed will produce female flowering plants. My very first grow of lethal purple and Strawberry Cough did this and produced about an 1/8 of an ounce of feminized seeds.

    northerntights Well-Known Member

    yes it can work but most prosucers of female seeds opt for using a hormone called gibberellic acid and not stress. If your seeds come from plants that can easily become hermies then those traits will be passed on. Best not to try and just clone your favorite.

    mogie Well-Known Member

    Contributed by Vic High:

    As the title implies, the main drawback to selfing cannabis plants is that you loose the male portion of your population, making future crosses difficult. Some think that by selfing a plant, all the offspring will turn out just like mom. That is only true if mom is true breeding for all the traits you are interested in. Otherwise, her offspring will show two phenotypes for every trait that she is not true breeding.

    There are two basic models for selfing a plant such as cannabis the first one being where the plant is homozygous for the trait in question. Let's assume again that pineapple flavour is controlled by the recessive gene pp. If we self the plant we fill get the following S1 cross.

    S1 cross = pp x pp = pp + pp + pp + pp or 100% pineapple flavoured female offspring. But no matching males

    The other likely possibility is that special individual heterozygous dominant for the pineapple flavour. In this case P will indicate for pineapple flavour and the S1 cross will be:

    S1 cross = Pp x Pp = PP + Pp + Pp + pp, our familiar 1:2:1 mendelian ratio.

    In this second example only 75% of the offspring will have pineapple flavour and the frequency of the P gene will only be 50%, a far cry from 100% or true breeding. From here on, this isn't much different from a half sib cross involving regular inbreeding or backcrossing. It will take a few generations to achieve something close to true breeding, but as with backcrossing, as long as we use the P1 mom in the crosses (selfing in this case), we will never achieve a true breeding population.

    babygro Well-Known Member

    It's not true at all.

    babygro Well-Known Member

    This isn't true at all.

    Firstly, there's no guarantee that any female Cannabis plant will produce male flowers at any stage in flowering. Secondly, there's no guarantee that any genetic female plant that has partially reversed sex and produced some male flowers has done so through stress - it could have been a genetic hermaphrodite to begin with in which case its seeds will also produce some genetic hermaphrodites. Finally there's no guarantee that any seeds from a self-pollinating hermaphrodite will be female - they could all be genetic hermaphrodites.

    CannaBoss Well-Known Member

    Hmm OK, then the Cannabis Grow Bible is wrong then?

    fdd2blk Well-Known Member

    which cannabis grow bible?

    cannabis grow bible - pg 230; Selfing:

    "Selfing is the ability of a plant to produce seeds without the aid of another plant and refers to hermaphrodite plants that are able to self-pollinate. Hermaphrodite plants have both male and female flowers. this usually means that the hermaphrodite plant is monoecious. Most plants are dioecious and have male and female flowers on separate plants.

    Monoecious cannabis strains will always display both sexes regardles of the growing conditions. Under optimal growing conditions a monoecious cannabis strain will still produce both male and female flowers on the same plant. Under optimal growing conditions a dioecious cannabis strain will produce male and female flowers on separate plants."

    livenhigh Active Member

    holly cow this could get heated... haha it also read that u could save the pollen (bag&brush) from these flowers and use them for crossing to pass desirable traits from that mother to whatever. ps can someone simplify that essay up there... think what its saying that it coulkd work for 100% female or only 50% or what not sure i think i might have to read it again and again and again and aga............haha anyways

    CannaBoss Well-Known Member

    yep, that's the one, by Greg Green.

    livenhigh Active Member

    so it says it wont work ???? and that a regular female will not produce pollen at the bitter end of flowering ?

    fdd2blk Well-Known Member

    it says herms produce herms. buy your seeds.

    CannaBoss Well-Known Member

    I don't think ALL female flowers will do this, just the ones that have it in their DNA make up. But maybe my interpetation is all wrong.

    livenhigh Active Member

    is there anyone who has tried this for them selves and not gone on totall speculation and even if i used gerbal acid where would i get it and how much im a canuck so i dont no if i can get it, and what i do really wanna no is if the female is left to the bitter en will a NORMAL female produce male flowers keep in mind it is not many just enough to make a few seeds if self pollenated, a sort of last defence if u will ??????

    cali-high Well-Known Member


    ive never done it but im gonna attempt it.

    heres what im gonna do. i got some trainwreck clones i waiting for them to root . once they do. then i will put them into a 1 gallon pot and began flowering. once the bud spots are formed. i will put some gibberelic acid on the lower bud sites and wait for it to produce male flowers. then i will cut the stem put it into a plastic cup cut a hold in the bottom and stick the stem in the hole. the put the cup into another cup with water an let the pollen sack mature. then i will get some pollen with a Q tip and apply it to my other plants the pure females not the hermi. then let the female seeds produce.

    thats pretty simple.

    ive nerver heard of any1 having trainwreck seeds so i will be one of the only people with it.

    fdd2blk Well-Known Member

    i have a whole box of trainwreck seeds. blazins' growing some. check her gallery.
    or a google search - scroll down to train wreak, maybe it's because i'm in CALI baby.
    Medical Marijuana Strains Discriptions Page 2, With Photos

    i still love you.
    blazin waffles

    blazin waffles Well-Known Member

    can't you also force females to produce male flowers with Colloidal silver? I don't know if i spelt it right.
    blazin waffles

    blazin waffles Well-Known Member


    dum Well-Known Member

    Pure speculation: I've read in every grow guide that I've read that if you flower too soon then you will end up with a hermaphrodite. "They" say that this is because the plant thinks it germinated too late and is racing to catch up with the others. It is like what you said at the beggining of this, a plant will try to carry on it's genetic material by any means necessary. The problem (I'm gonna look like an ass if I'm wrong) with this idea is that if the plant measures the season by the amount of light then wouldn't this occur if you only gave the plant something like 9 hours of light? If that is one way to make a hermaphrodite then I'm sure that the plant producing both flowers is just as, if not more likely way to get a hermaphrodite.

    plantsinpants Well-Known Member

    have you seen my baseball

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