c'est quoi le rapport entre PIRANHA et féminisé????
Sinon le PIRANHA c'est bien et les fem c'est marrant
Je dit marrant parce que jouer les chimistes c'est
marrant
Puis régulière ou fem tout dépend qui l'a faite.... si c'est Nirvana
Moi j'ai de la Big Bang en fem et elle pète bien....
sinon ..... un chouille de lecture pour mettre les fichiers à jours
......
copier/coller
pour la traduction, merci google
(désolé si y à des fautes
)
Feminized Seed
Ed Rosenthal
Feminized seeds produce only female plants. When they germinate there will be nary a male among them. The threat of accidentally pollinating crops by missing identification of a male is eliminated. A male-free crop is only one reason why one might produce all-female seeds. Another goal might be the preservation of a particular characteristic or plant type. The predominate way to preserve the exact genetics of a plants is by cloning of one sort or another. However, a plant crossed with itself (called self-crossing) offers a much better chance of retaining favorable characteristics. Another reason for using this technique is to create a hybrid of two female plants. What to do if no male of that variety is available? If a branch of the female can be turned “male”, there would be pollen to cross the plant with itself or any other female. By eliminating males from the equation, breeding becomes much easier.
Feminized seeds are produced by inducing a normal female, not a hermaphrodite, to grow male flowers with viable pollen. This pollen is collected and used to produce seed. The sperm in the pollen contains only female or X chromosomes because the plant has no Y, or male chromosomes. Voilà! The progeny will inherit an X from the sperm in the pollen and an X from the egg donor. The resulting seeds can only inherit two X chromosomes, which means that all resulting seeds will be girls.
Congratulations!
Feminized seeds are not as mysterious or weird as they might seem. In mature human males, female hormones cause feminizing changes such as breast enlargement, softened body lines, and a higher pitched voice. The primary sex organs have already been formed but they shrink. When the treatment ends, The influence of the feminine hormones ceases and the male characteristics gradually reappear. The same thing happens with plants treated with masculizing chemicals. The difference between effects on higher animals and plants is that mature animals have already formed their sex organs. Every time a plant grows a new flower, it is growing a new sex organ. Flowers under chemical influence grow in a viable masculine form. Howerer, the plant is still a female with two X chromosomes, so the sperm in the pollen only has X has sex chromosomes.
There are several methods used to produce feminized seed. By far the easier method was developed by Soma, the noted breeder. He noticed that when colas reached late ripeness, whitch by the way, I prefer as the havest-time, a few viable male flowers appear. This is not only signal that the buds are ripe. The pollen from these flowers can be harvested using a fresh watercolor brush and a small glass or metal container. Not all varieties produce male flowers at the end of ripeness, but many do, and they do it reliably.
Plant stresses often induce hermaphroditism in cannabis. However, I haven’t found stress techniques reliable. These only seem to work when you don’t want them to. Irregular light cycles and heat stress sometimes induce male flowers but I haven’t found a stress regimen that insures masculinization. Should this happen accidentally in a garden with a valuable variety, be opportunistic. Collect the pollen, even if you have no plans to use it. It remains useable for years when packed with a desiccant and stored in a sealed container in a freezer.
Some varieties flower normally outdorrs. However, when clones of the same plant are grown indoors the plants udergo stress and grow hermaphrodite flowers. The pollen from these male flowers can be used for breeding provided that the resulting plants are going to be grown outdoors, where they won’t exhibit the unwanted hermaphroditism.
The use of chemicals is the method used in laboratories and in commercial production to induce male flowers in female plants. Two chemicals that are used are gibberellic acid and silver thiosulfate. Both of these chemicals inhibit the plant’s ethylene production, a hormone that promotes female flowering. As a result, the plant’s female flower production is reduced. However, these chemicals also have a second mode of action because other ethylene inhibitors don’t promote male flowering. The actions are localized. If only one branch of a plant is spayed, that branch will continue growing female flowers, not males.
Gibberellins are hormones that plants produce to regulate many phases of their growth. Several of the gibberellins, GA3, 4, 5 and 7, induce male flowers on female plants when they are sprayed before the plants initiate flowering. GA3, which is the gibberellins most commonly avaible commercially, is it most effective. A solution of 0.01% (0.1 gram GA3 in a liter of distilled water) is best. Lower doses result in fewer male flowers. Higher amounts have an inhibitory effect. Lightly spay the tops of five consecutive days and then place the plants in flowering regimen 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.
Silver nitrate can also be used to induce male flowers. A solution of 0.02-0.03% is sprayed on the plant and then the plant is placed in the flowering regimen of 12 ours light, 12 hours of uninterrupted darkness. The leaves will droop for a day or so and then resume turgidity. Male flower growth will become apparent in a couple of weeks. They will ripen a few weeks later. To make a 0.02% solution, add 0.1 gram of silver nitrate in 0.5 liters of distilled water.
Silver thiosulfate is more effective than silver nitrate; that is, it will induce more male flowers. It is made by combining two water solutions, one containing silver nitrate and the other, sodium thiosulfate. The exact formula is below. The plant is spayed until the liquid drips off the leaves and immediately after, the light regimen is changed from vegetative to flowering. The sprayed areas yellow a bit and stop growing for a few days. Then they start to grow male flowers, which ripen in a few weeks.
par contre le reste , y du bon (mais clair qu'il faut faire le ménage comme dans tout les bouquins 