Best way to stress a female into producing pollen?

[timmyocool]

I want to make my own feminized seeds. Ill be using grapefruit fems. From my understanding all you have to do is stress the plant into producing pollen and pollinate a cut of the same plant. Does this only work with standard seeds? I hope the fact that im using fem beans doesnt cause a lot of hermie offspring.

In a DWC bucket, how would you go about stressing a plant to hermie ville? Im thinking about keeping the water temp really high, but i dont want to kill it. Maybe not feed it enough and bad ph? What are your methods? How long does it take for a mature plant to go hermie and produce pollen?

Whats the lingo for this technique? I couldnt find anything with the search function.

 

[PhenoMenal]

Yep, basically what you want is bananas (pollen) to show up on a female plant ... you can do this by stressing her (various methods including light poisoning, excess heat, playing around with nutes etc), and some strains will spit out a few bananas simply if you leave them flowering for long enough.

A more reliable method is to chemically induce them by effectively reversing the sex of the plant. The most common chemicals used as giberilic acid (GA), silver theosulphate (STS), and my personal favourite - colloidal silver (CS).

GA and STS are toxic and not so easy to obtain, but colloidal silver is non-toxic and very easy and inexpensive to make at home. You can actually buy CS at pharmacies/drugmarts because it has very good antibacterial properties, but its ppm level of silver is too low for our needs so we need to make our own. See the link in my signature for further details on that

Have fun

Colloidal silver generator:

 

[Old Soul]

The best way is to let the plant flower long until it produces bananas. I believe it was Soma who described this method and that it produced the most stable female seeds of all other methods.

Peace

 

[PhenoMenal]

Yes, Soma called it "Rhodelization" ... others simply call it letting the plant continue flowering until it either dies or produces a few bananas :smile:

As to whether or not it produces the most stable, hermie-free seeds is debatable ... who knows, maybe it does, but I dont think there has been enough published data on each of the methods to make a case either way. It certainly takes a lot longer than other methods though, and isnt as reliable in that you're waiting a long time for a very small amount of pollen that may not even ever show up.

 

[professordank]

I heard the best way was light manipulation. I am definitley going to try the colloidal silver a try. Also DechlorJuice has sodium theosulphate in it, could this in excess amounts be sufficient to produce hermies?

 

[Chiefsmokingbud]

I would be hesitant to use femed beans. I can say thet the red light emitted from the on/off switch of a small dc converter will cause hermies. Happened to me and the whole crop went to seed. Ran a second crop without the converer and everything was fine so i'm sure that's what it was.

 

[dope_roor]

can stress induced pollen be used on another strain?

say i stress my OG kush to make some bananas and then try to pollinate a Granddaddy Purple plant?

 

[PhenoMenal]

can stress induced pollen be used on another strain?

say i stress my OG kush to make some bananas and then try to pollinate a Granddaddy Purple plant?

If you get the bananas/pollen then yes you can use it to pollenate any other strain you like. Getting the bananas is the tricky part tho ...

 

[timmyocool]

i think ill harvest most of the plants and then keep letting them flower. what type of light manipulation stresses the plant the most? I could do 12/12 one day then 18/6 and keep at it for a while. You think that would work well?

 

[timmyocool]

bumpbumpbump

 

[Old Soul]

Yes, any light manipulation of less than 12 hours of darkness will stress the plant to hermie.

Peace

 

[kdk-lotnar]

lights off for 3 days

lights off for 3 days

in 2003 i accidentally unplugged the light for 3 days while packing up for a hurricane that never showed (good deal)... at harvest all females had seeds... lots of seeds.

Should work, just make sure they have water first...for a soil grow that is

 

[primateUA]

I read an article in high times many years back about the light manipulation.

They suggested 6 hours on 1 hour off 5 hours on.

I've always just let a little light leak in the room during the last 4 weeks of flowering while ia girl is in the dark cycle
It happened on accident the first time and has worked the other two times I've tried it.

I've actually harvested the seeds and grown them out with pretty good results

my germination rates weren't good ( i think this was to bad storage though)

all seeds ended up female ( which made sence becuz no male pollen in garden at all)
Not much variation so far showing from seeds
I grew the seeds out then regenerated 10 of my favorite picks into my ew mothers.


I'm currently about to try a giberellic acid experiment.

I got it on ebay for like 12 dollars

you can find the ppm mixture and instructions around the net.


also


leaving the girls in the room for 90 to 110 days often does produce a few golden seeds.

 

[kannubis]

old thread bump

 

[PhenoMenal]

I'm currently about to try a giberellic acid experiment.
I got it on ebay for like 12 dollars

There's an icmag user (jump117 i think?) who used to use GA3 (gib acid) but is now using colloidal silver as he's getting better results.

See the thread in my signature for more details about colloidal silver, and how cheap and easy it is to make it.

 

[jump117]

Hi PhenoMenal!
No, it wasn't me but my thread - fellow bicycle_racer mixed GA3 with CS, I never used GA3.