This will result in the hybrid seeds the breeders are after, and they’re known as “F1” seeds, or first generation seeds. F1 seeds will be the most stable of any seeds that follow it in future generations, and those generations will be known as “F2” seeds, “F3” seeds, and so forth as more seeds are made. However, F1 seeds are the most sought after by breeders because they grow about 25 percent faster, and they grow larger and with more vigor that subsequent generations.
In addition to F1 and F2 seeds, there are also S1 seeds. The “S” in this case refers to “self” or “selfed”, meaning that these seeds will be selfed-generation. They do not need a male plant for pollen but rather, the female plant is reversed so that pollen can be collected. The pollen will then be used to pollinate the mother plant or a clone of the mother to get S1 seeds. Males can be selfed as well, but in both cases it’s a complex process that requires great focus from even the most experienced breeders.
The terms “F1” “F2” and “S1” are some of the first that beginner breeders will come across. They refer to outbreeding, or producing hybrid seeds, which is the practice of cross-breeding two plants that originally have completely different genetics. In order to do so, two stable parents must be chosen so the pollen from the male can be used to fertilize the female.
Once someone has become a master grower, they can then work towards being a master breeder. While growers are simply taking seeds and growing them into beautiful plants, they are growing something that nature, or someone else, has actually created. However, when one becomes a breeder, they get to truly play god by breeding different strains together, making seeds, and even making their very own strain. In order to do so, one has to first have a good grasp on things science, genetics, and how cannabis plants work to make seeds, to make bud, and how different plants work together.
Breeding can be even more exciting than growing because it’s a chance to really make your own strain and create something that will highlight your preferences. Breeding can be a complicated matter, however. Start by understanding some of the basic terminology, and what’s needed to create a stable strain, and you’ll be well on your way to your own.
On the other hand, every photoperiod strains (elite clones) of the Sweet Seeds® bank of mothers that we use to produce F1 Fast Version® strains are homozygotic for the dominant character that expresses the photoperiod-dependent flowering. They are (FF) as they have received a (F) gene from the father and another one from the mother and this is something that we can deduce from the analysis of the offspring of these clones.
A very important detail for indoor growing with artificial lights, taking in consideration the prices of electricity and the contamination that it takes to produce electricity.
When we performed the first crosses between autoflowering genetic lines and our beloved photoperiod-dependent elite clones, we observed that 100% of the first generation was photoperiod-dependent. There was not one single autoflowering specimen. This was something expectable and indicated that the autoflowering character was recessive and the photoperiod-dependent character was dominant. But what really called to our attention in our first experiment was how fast the F1 Hybrid flowered. We even double checked our calendars to be sure that there were no mistakes in our annotations. We confirmed that there were no errors whatsoever. The cross with the autoflowering strain leaded to an important shortening in the flowering time to the F1 Hybrid and bud maturation happened about 2 weeks earlier.
Keeping photoperiod-dependent plants with a vegetative photoperiod, for as long as we wish, we can control the height and size of the plants to obtain big sized plants and high production of buds. In outdoor growing, this allows us to get enough stock for our annual consumption with just a few plants. In the same way, controlling the photoperiod in order to induce the flowering without any vegetative growth, we can obtain the opposite effect: small and discreet plants with a fast life cycle. To plan the desired height in advance, we will have to take in consideration that, depending on the strain, the plants may double or even quadruple the height presented in the beginning of the flowering stage or since we start the change in the photoperiod in indoor grows.
Sweet Cheese F1 Fast Version®
As it refers to a F1 seed, if we cross these seeds (Fa) with each other to obtain more seeds, then the second generation, known as F2, concurring with the second Mendel Law or Character Segregation Law for the second filial generation, will not produce 100% Fast Version (Fa) specimens anymore. Within the specimens originated from this procedure, we would obtain a mix of 25% autoflowering (aa), 25% photoperiod (FF) and 50% Fast Version (Fa). The only generation that is 100% Fast Version (Fa) is the F1 Fast Version®.
Besides the previously mentioned advantages that are shared by all the photoperiod-dependent strains, the fast flowering of the F1 Fast Version® genetics allows for extra advantages for the cannabis growers:
This is one of the most important advantages of F1 Fast Version® genetics. This advantage can be a particular benefit for outdoor growers from humid and rainy areas, high mountain zones or regions with harsh winters. Fast-flowering marihuana plants can anticipate harvest to the most virulent season of fungus attacks, that decimate the buds in long time flowering plants. It also allows for an anticipation to the arrival of bad weather and the cold. These genetics are ready to harvest between late August and early September in the Northern Hemisphere. Late February to early March in the South Hemisphere.
Green Poison F1 Fast Version®
The autoflowering or photoperiod trait is dependent on a single gene. This gene presents two possible alleles. One is dominant (F), which is the one that codifies the photoperiod character while the other one is recessive (a) and is the one that codifies the autoflowering character. As the allele that codifies the autoflowering character is recessive, to express this type of flowering it is required to be in a state of homozygosis, which means that all the autoflowering plants are (aa), as they have received a gene (a) from the father and another one from the mother.
As they are F1 Hybrids, they feature strong hybrid vigor. The hybrid vigor phenomenon is normally expressed in a quantitative way. This means that they are measurable and in marihuana they are usually expressed as: