Posted on

f1 hybrid cannabis seeds

Traditionally, F1 hybrids have been used in agricultural crops and have been the driving force behind the study of agronomy. Cannabis Breeders have inbred plants for years to produce more desirable results. They use a process known as Heterosis to yield wanted characteristics in order to get not just one plant with the favorable traits but all produced plants with a uniform characteristic.

Today, medical marijuana facilities, Seed banks and Cannabis Breeder all across the country are using this process of creating F1 hybrids that agriculture has used for decades to produce seeds and plants that have ever-growing desired characteristics. Scientists can identify which type of cannabis treats certain diseases and what the properties in the plants are that achieve this.

True F1 hybrids are produced by controlled pollination which must be repeated each season. The controlled pollination is done by hand in carefully measured batches and given to the receiving plant in a very controlled environment in order to achieve this hybrid cross. This long process is the reason behind the higher prices of F1 hybrid seeds that you see on the market.

What is a F1 Hybrid? Cannabis Genetics Explained

Gregor Mendel F1 hybrid breeding

However, since these plants are being inbred, there are limitations to what they can achieve. Usually, around the tenth generation, the homozygosity of the plants that are being produced reaches a level, usually determined at 90% or above, where they no longer can yield the desired results. This requires a new process which can be done by simply crossing plants with a different population while avoiding self-fertilization.

A recombination does happen between two corresponding chromosomes and, because there is no un-linkage of alleles, there is just a recombination with its identical copy. Therefore, the traits of the chromosomes stay linked, producing the desired set of traits on the chromosomes and resulting in an F1 hybrid.

This requires a new process which can be done by simply crossing plants with a different population while avoiding self-fertilization. While it may be the simplest way, it usually involves removing all male plants from the population, which can still be time-consuming, but there are also other methods of achieving this. While it may be time-consuming, it is still one of the most commonly used methods in agriculture and plant breeding today. To give you an idea,

The difference is that whereas with an F3 back cross squared will stand a 50% chance of being 100% Parent One Dominant, the F4 has a 75% chance of being 100% Parent One Dominant. (50% chance of stabilizing at F3, and 50% of 50% at F4)

F1” denotes that the seeds or plants have two true-breeding parents. The crossing of F1 hybrid strains produces plants whose characteristics won’t be the same as the original true-breeding parents, though they may share some.

The other thing a breeder can do at this time of course is to select the medium bud density plants and cross it with the high bud density plants. A blumming hard trick as they are both females but it is possible if you can force hermie on one of them (not easy with a fast-to-flower plant) and keep the hermie trait from moving across too. I hope you enjoyed Breeding Cannabis, F1 and F2 Explained

Cannabis what’s f2? Second generation (F2)

The most important characteristics manipulated through cross-breeding are the size of the plant, bud to leaf ratio, yield, taste, effect, and acclimatization to western growing conditions.

Then starts the long-winded process of trying to stabilize the dense bud gene, this can only really be done by years and years of cross-breeding the F3s together and then selectively breeding these off sprig together too until the genes regarding bud density become dominant.

When F1 hybrids self-pollinate, an F2 hybrid is obtained. Recessive traits in the second generation may be more pronounced. F2 hybrids are derived from plants that have both dominant and recessive traits.

Cannabis Breeding Genetics F1 and F2 Generations
In common with orchids and prize roses, Cannabis seed strains are grown and cross-bred by botanists to create new cannabis breeds with different characteristics.