D
DGL
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Hey guys DGL here before we begin i would like to start off by saying i will not be explaining how to create female seeds by causing stress or heat fluctuation to produce male flowers, the stress / heat fluctuation method creates seeds with hermaphrodite TRAITS! within the genetic material and we don't want that know do we? lol so lets begin.
First off grasping a better understanding of how or why female plants produce pollen WITHOUT STRESS! aka Self Pollination.
It became evident that almost all unpollinated female plants would inevitably pro-duce some male pollen. This is a survival mechanism: when a female plant is not pollinated by a male plant, it generates male pollen to fertilize itself. After self pollination, the female plant bears seeds. By systematically collecting pollen produced by these hermaphroditic female plants and fertilizing flowers on other females, I was able to produce feminized seeds.
the Process of Self Pollination to create female seeds is very LIMITING from a production stand point let me explain below:
The process of self Pollination means that we were only able to produce and harvest a small amount of female pollen, which seriously limited production. It took a lot of effort to produce a few thousand seeds.
The Question know is how do we get abundant “female” pollen to produce feminized seeds without waiting on self Pollination:
the answer was found at the Agricultural University at Wageningen. Researchers there had done similar work with other plant species, such as cucumbers. They had discovered that plant hormones and less complex agents can drastically change the physiology and morphology of the cucumber. It then took Henk Van Dalen(creator of dutch passion seeds) about two years to check which hormones and other agents could enhance pollen production in female cannabis plants without disrupting their normal growth pattern.
Henk Van Dalen Found that gibberellic acid(GA3), silver nitrate, and silver thiosulfate are the Chemicles that Promote Female Flowering:
They each inhibit the plant’s production of ethylene, a hormone that promotes female flowering. Without ethylene, female flower
production is reduced or stopped.
First why and how does gibberellic acid Promote Female Flowering?
Gibberellins are hormones that plants produce to regulate many phases of their growth. Several of the gibberellins, such
as GA3, 4, 5 and 7, induce male flowers when they are sprayed on female plants before they begin flowering. GA3, which is the gibberellin most commonly available commercially, is the most effective.
How to Use GA3 Properly?
Gibberellin must be used carefully. Lower doses result in fewer male flowers. Higher amounts have an inhibitory effect. Lightly spray the tops of the plant for five consecutive days and then force the plants to flower by increasing the uninterrupted dark period to 12 hours a day. The sprayed area will stretch a bit, but within two weeks, the first signs of male flowers will appear. They will be ripe and ready to release pollen in another two weeks.
For Best Results Use This Recipe to Create GA3:
use a solution of 0.01% (0.1 gram GA3 in a liter of distilled water).
Why Is Silver Thiosulfate More Effective then Silver nitrate?
Silver Thiosulfate induces more male flowers then silver nitrate plain and simple.
How To Use Silver Thiosulfate Properly?
Spray the plant until the liquid drips off the leaves. Then immediately change the light regimen from vegetative to flowering. The leaves will droop and stop growing for a few days, yellow a bit and then regain turgidity. Male flower growth will become apparent in a couple of weeks. The flowers will ripen a few weeks later.
For Best Results Use This Recipe to Create Silver Thiosulfate:
Mix 0.1g silver nitrate in 100 ml (3.5oz.) distilled water. Stir rapidly until dissolved (Solution A). Mix 0.5g sodium thiosulfate in 100 ml distilled
water. Stir rapidly until dissolved (Solution B). Pour Solution A into Solution B. Dilute Solution A/B 1:9 with distilled water. That is, add the 200
ml of solution to a 2-liter container and fill to the top with distilled water. The solution is now ready to spray.
Know the question is how does this create Female Pollen and Not Hermaphrodite Pollen?
If a branch of one female is turned “male,” By Spraying the Plant with Gibberellic Acid(GA3), Silver Nitrate or Silver Thiosulfate there will be pollen to fertilize the other plant, and to create seed when no male is around. Feminized seeds are produced by inducing a normal female, not a hermaphrodite, to grow male flowers with viable pollen. The pollen Created by These Normal Female's contains only female, or X, chromosomes because the plant has no Y, or male, chromosomes. The progeny will inherit an X from the male flower’s pollen and an X from the egg donor female flower. The resulting seeds can only inherit two X chromosome.
P.S. The actions of these chemicals are localized, what does this mean?
This Means If only one branch of a plant is sprayed with GA3, Silver Nitrate And/or Silver Thiosulfate, that branch will be the only one affected. The rest of the plant will continue growing female flowers, not males
Lastly You may ask can i still produce hermaphroditic plants while using female seeds? yes with stress! explanation:
Even when using feminized seeds, there is still a small chance that you will have a few plants that are hermaphrodites (truly both male and female) or males. You should monitor all your plants through the entire growth stage to check for these oddities. Maintaining stable growing conditions is the best way to prevent male or hermaphroditic plants. Environmental stresses such as light, disruption, or over-pruning will encourage female plants to produce pollen. If you do find a male or a hermaphrodite, remove it but if your in week 6+ of flower and one of your plants starts growing a male flower in my opinion leave it and finish up the harvest! but if this happens in week 5, 4, 3, 2 or 1 KILL THAT PLANT! A.S.A.P
Credits:
Ed Rosenthal - i honestly got most of this information a couple of years back from Oaksterdam university Coarse Book i just put it into my own words.
Chimera For being a bad-ass Breeder and releasing information he has acquired to the public for no REASON!!, making the information he acquires through rigorous years of experimentation "publicly known Information".
Henk Van Dalen For supplying most of the information on this thread!.
First off grasping a better understanding of how or why female plants produce pollen WITHOUT STRESS! aka Self Pollination.
It became evident that almost all unpollinated female plants would inevitably pro-duce some male pollen. This is a survival mechanism: when a female plant is not pollinated by a male plant, it generates male pollen to fertilize itself. After self pollination, the female plant bears seeds. By systematically collecting pollen produced by these hermaphroditic female plants and fertilizing flowers on other females, I was able to produce feminized seeds.
the Process of Self Pollination to create female seeds is very LIMITING from a production stand point let me explain below:
The process of self Pollination means that we were only able to produce and harvest a small amount of female pollen, which seriously limited production. It took a lot of effort to produce a few thousand seeds.
The Question know is how do we get abundant “female” pollen to produce feminized seeds without waiting on self Pollination:
the answer was found at the Agricultural University at Wageningen. Researchers there had done similar work with other plant species, such as cucumbers. They had discovered that plant hormones and less complex agents can drastically change the physiology and morphology of the cucumber. It then took Henk Van Dalen(creator of dutch passion seeds) about two years to check which hormones and other agents could enhance pollen production in female cannabis plants without disrupting their normal growth pattern.
Henk Van Dalen Found that gibberellic acid(GA3), silver nitrate, and silver thiosulfate are the Chemicles that Promote Female Flowering:
They each inhibit the plant’s production of ethylene, a hormone that promotes female flowering. Without ethylene, female flower
production is reduced or stopped.
First why and how does gibberellic acid Promote Female Flowering?
Gibberellins are hormones that plants produce to regulate many phases of their growth. Several of the gibberellins, such
as GA3, 4, 5 and 7, induce male flowers when they are sprayed on female plants before they begin flowering. GA3, which is the gibberellin most commonly available commercially, is the most effective.
How to Use GA3 Properly?
Gibberellin must be used carefully. Lower doses result in fewer male flowers. Higher amounts have an inhibitory effect. Lightly spray the tops of the plant for five consecutive days and then force the plants to flower by increasing the uninterrupted dark period to 12 hours a day. The sprayed area will stretch a bit, but within two weeks, the first signs of male flowers will appear. They will be ripe and ready to release pollen in another two weeks.
For Best Results Use This Recipe to Create GA3:
use a solution of 0.01% (0.1 gram GA3 in a liter of distilled water).
Why Is Silver Thiosulfate More Effective then Silver nitrate?
Silver Thiosulfate induces more male flowers then silver nitrate plain and simple.
How To Use Silver Thiosulfate Properly?
Spray the plant until the liquid drips off the leaves. Then immediately change the light regimen from vegetative to flowering. The leaves will droop and stop growing for a few days, yellow a bit and then regain turgidity. Male flower growth will become apparent in a couple of weeks. The flowers will ripen a few weeks later.
For Best Results Use This Recipe to Create Silver Thiosulfate:
Mix 0.1g silver nitrate in 100 ml (3.5oz.) distilled water. Stir rapidly until dissolved (Solution A). Mix 0.5g sodium thiosulfate in 100 ml distilled
water. Stir rapidly until dissolved (Solution B). Pour Solution A into Solution B. Dilute Solution A/B 1:9 with distilled water. That is, add the 200
ml of solution to a 2-liter container and fill to the top with distilled water. The solution is now ready to spray.
Know the question is how does this create Female Pollen and Not Hermaphrodite Pollen?
If a branch of one female is turned “male,” By Spraying the Plant with Gibberellic Acid(GA3), Silver Nitrate or Silver Thiosulfate there will be pollen to fertilize the other plant, and to create seed when no male is around. Feminized seeds are produced by inducing a normal female, not a hermaphrodite, to grow male flowers with viable pollen. The pollen Created by These Normal Female's contains only female, or X, chromosomes because the plant has no Y, or male, chromosomes. The progeny will inherit an X from the male flower’s pollen and an X from the egg donor female flower. The resulting seeds can only inherit two X chromosome.
P.S. The actions of these chemicals are localized, what does this mean?
This Means If only one branch of a plant is sprayed with GA3, Silver Nitrate And/or Silver Thiosulfate, that branch will be the only one affected. The rest of the plant will continue growing female flowers, not males
Lastly You may ask can i still produce hermaphroditic plants while using female seeds? yes with stress! explanation:
Even when using feminized seeds, there is still a small chance that you will have a few plants that are hermaphrodites (truly both male and female) or males. You should monitor all your plants through the entire growth stage to check for these oddities. Maintaining stable growing conditions is the best way to prevent male or hermaphroditic plants. Environmental stresses such as light, disruption, or over-pruning will encourage female plants to produce pollen. If you do find a male or a hermaphrodite, remove it but if your in week 6+ of flower and one of your plants starts growing a male flower in my opinion leave it and finish up the harvest! but if this happens in week 5, 4, 3, 2 or 1 KILL THAT PLANT! A.S.A.P
Credits:
Ed Rosenthal - i honestly got most of this information a couple of years back from Oaksterdam university Coarse Book i just put it into my own words.
Chimera For being a bad-ass Breeder and releasing information he has acquired to the public for no REASON!!, making the information he acquires through rigorous years of experimentation "publicly known Information".
Henk Van Dalen For supplying most of the information on this thread!.