Weed Seed Genetics

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Cannabis seed breeders often refer to F1, F2, S1, IBL & BX marijuana seeds. Find out what the terms mean and how they evolved. Buy cheap weed seeds bulk from The Netherlands! High quality cannabis seeds with the best genetics ✓ Autoflower weed seeds… Cannabis genetics define the characteristics of the plants which grow from cannabis seeds. Learn more details about cannabis genetics and terminology.

What are F1, F2, S1 cannabis seeds?

To many people cannabis seeds are simply cannabis seeds. But breeders and connoisseur growers also use different terms for cannabis seeds, such as F1, F2, S1 etc. In this review, we will explain what is meant by these terms and precisely what they tell you about the cannabis seeds which they describe.

Summary:
The basics of cannabis genetics for breeders
Different types of F1 cannabis seeds
The difference between F1 and F2 cannabis seeds
How does selfing produce S1 cannabis seeds?
Cannabis genetics hybridisation process case studies
Cannabis seeds quality: what to know before growing?

The basics of cannabis genetics for breeders

Most home growers tend not to worry too much about terms such as F1 cannabis seeds, F1 hybrid cannabis seeds etc. So long as the seeds contain reliably good quality genetics few people are too concerned about the terminology used. However, to many cannabis breeders it is vitally important to understand the sometimes subtle, but critical, differences.

What does f1 hybrid mean? Cannabis seeds are formed when pollen from the male pollinates a female plant. The male genetics cross with those from the female to create F1 cannabis seeds, meaning that the cross is a First generation cross. If the parents were from two different strains the result would be F1 hybrid cannabis seeds.

Note that male pollen spreads easily and will pollinate any nearby female plants. That’s why professional breeders have isolated, dedicated breeding rooms which prevent accidental pollen spread. Pollen may be applied with small brushes using e.g. paint brushes, allowing specific branches to be pollinated with pollen from different males if required. Or male and female plants may share the same room, pollen is spread simply using air circulation fans.

Anyone involved with breeding/pollen would normally shower and change clothes to prevent unintended cross contamination between different areas of their breeding facility. Once pollinated, the female plant focusses much of her energy into seed production (rather than bud production).

What are F1 hybrid cannabis seeds?

F1 cannabis seeds simply mean that they are a first generation of offspring from the parent strains. Hybrid vigour is a term often used when discussing cannabis seeds, along with the question ‘Can an F1 outbreed for hybrid vigor?’ Cannabis hybrid vigour is observed when different strains are hybridised in an F1 cross.

If the parent strains were quite different indica and sativa strains then the seeds would be called F1 hybrid cannabis seeds, these may show vigorous growth and display ‘hybrid vigour’ resulting in growth which is faster than usual. This extra growth vitality is seen when different cannabis genetics are hybridised to create an F1 cannabis cross.

Different types of F1 cannabis seeds

F1 cannabis seeds explained! You can buy F1 autoflowering cannabis seeds or photoperiod F1 feminised cannabis seeds. Autoflower seeds tend to have a reputation for being faster and perhaps a little easier/more convenient than feminised seeds, but much depends on the preferences of the grower. F1 regular cannabis seeds are also popular with some old school growers or those conducting their own breeding experiments.

F1 fast cannabis strains are also available, with strains such as Think Fast. These strains have recessive autoflower genetics which cause the f1 fast cannabis strains to grow from seed to harvest a couple of weeks faster than traditional strains. For some outdoor growers this could be the difference between a harvest which ripens before the bad weather arrives and one which doesn’t.

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Many connoisseur growers prefer to buy genuine F1 cannabis seeds in order to get the highest chance of the consistent quality results which are most similar to the parent strains. F1 White Widow cannabis seeds from Dutch Passion are a good example. The large numbers of repeat White Widow growers know that their best chances of producing original Grade-A White Widow buds is to use F1 White Widow cannabis seeds.

The difference between F1 and F2 cannabis seeds

F1 cannabis seeds are produced when two parents are crossed. When you see F1 cannabis seeds for sale you would normally expect them to show the closest qualities to the original strains. When the F1 cannabis seeds are grown and subsequently crossed the resulting seeds are known as F2 cannabis seeds.

The subject of F1 and F2 cannabis genetics can be a complicated subject, with questions such as ‘is F1 better than F2 cannabis?’ Whether you get better results with F1 vs F2 cannabis seeds will depend on the individual phenotypes being grown, as well your definition of the word ‘better’. It is perhaps safest to say that F1 cannabis seeds are more likely to show results closer to the original parents compared to F2 seeds.

Note. Growing and crossing F2 cannabis seeds would produce F3 cannabis seeds.

What are inbred line cannabis seeds (IBL)?

Inbred line cannabis seeds, often known simply as IBL seeds, are the result of inbreeding the descendants of the F1 cannabis seeds. It is usual to breed for 5 or more generations (F5) in order to be regarded as inbred line cannabis seeds. At this point the IBL may often be considered as a distinct strain in its own right.

Remember that the cannabis seeds have been produced from plants with genetics which are practically identical over several generations. Although this type of breeding is arduous and may take several years, the resulting cannabis seeds are typically very consistent with highly predictable results for the grower.

The Skunk family of cannabis seeds is an example of in-breeding which has allowed the successful preservation of the distinctive skunk aroma and taste.

What are poly-hybrid cannabis seeds?

The most reputable cannabis seed suppliers work hard to identify the best genetics and then stabilise them, a process which sometimes takes several years. Stable consistent cannabis seeds give the grower the best chance of replicating premium quality genetics in their own grow room. However, if two (F1) hybrid strains are crossed the result is poly hybrid cannabis seeds.

When growing such seeds you can reasonably expect any of the genetics from the diverse parentage to be expressed. For some growers, variety is a good thing. For other growers seeking a tent full of consistent/uniform plants, poly-hybrid cannabis seeds are unwelcome guests.

Many of the less experienced seed suppliers intent on making a ‘fast buck’ simply cross male and female plants to create rapid seed production with absolutely no thought given to stabilisation or optimisation of the genetics. Be sure to do your research carefully before buying cannabis seeds and choose seed banks with a good track record of customer service, plenty of repeat customers and perhaps a few cannabis cups. Cannabis cups are usually a sure sign that your seed bank takes their profession seriously and is there for the long haul.

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How does selfing produce S1 cannabis seeds?

What does F1 and S1 mean? Female cannabis plants can produce S1 cannabis seeds through a process known as ‘selfing’. Usually this involves taking a cutting/clone from the female mother plant and turning it into a male by a process known as ‘reversion’.

This can be done by spraying the female with a chemical such as Silver Thiosulphate. The stress of this causes the female to become a male plant. Pollen is then collected from this plant and used to pollinate the original mother plant. This allows the original female to effectively be ‘self-pollinated’ or ‘selfed’. The cannabis seeds are known as S1 seeds and have the added stability benefit of using the ‘same’ genetics from the male and female.

Cannabis genetics backcrossing explained

When two parent strains are crossed the result is an F1 cannabis seed. If this seed is grown and crossed with one of the original parents, it is known as backcrossing. Backcrossing is a way of stabilising a cannabis strain since it allows parent genetics to be backcrossed with genetically similar offspring. As a result, greater genetic stability is conferred on the resulting cannabis seeds. This produces more consistent seeds with more predictably uniform results in your grow room.

Cannabis genetics hybridisation process case studies

Often cannabis breeders will aim to combine two great qualities from different strains into a new hybrid. Often this will involve e.g. taking the cannabinoid content from one strains and augmenting it with XXL yields from another.

Orange Hill Special

Orange Hill Special is a Dutch Passion photoperiod feminised seed variety. She was in-bred over 6 generations after the initial crossing with genetics from Orange Bud and Californian Orange.

Orange Bud and Californian Orange are both members of the multi-cannabis cup winning Orange Family of cannabis seeds. These strains stand for premium quality harvests of beautifully citrus scented buds. Orange Bud and Californian Orange have slightly different but complementary terpene profiles. The aim of the hybridisation was to combine the best features of each variety into a new stable strain which would embody the best taste, THC levels and yields.

Orange Hill Special is a member of the most potent cannabis seed selection available, the High THC cannabis seed collection. This is where you can expect consistent 20-25% THC levels across all plants when grown in good conditions. Such stability and consistency don’t arrive by accident, it’s the result of several years of careful selection, lab analysis, stabilisation and careful breeding. If you’re looking to grow heavy harvests of extremely THC rich citrus scented skunk buds then Orange Hill Special is a perfect choice. For best results, LED grow lights are recommended.

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Seeds Genetics Co. offers high quality cannabis seeds at affordable prices. We only select and breed the highest quality cannabis seeds with excellent genetics. Within our product range you will find the best cannabis seeds for good harvests and high yields. We offer feminized as well as autoflower seeds.

Seeds Genetics Co. is your solution for buying the best seeds. We sell the popular feminized America species and Amnesia Haze seeds.

You will find extended information regarding storing seeds and cannabis seed germination on this website.

Cannabis seeds genetics

Cannabis genetics define the characteristics of the cannabis plant. The plant DNA is the hereditary (genetic material) which is found in plant cells. This carries information for the growth of the plant. Cannabis genetics determine which cannabinoids your plant will be rich in, how large it can grow and all the other important aspects of cannabis. Good quality, stable cannabis genetics are the key to growing high quality cannabis.

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Best Indica vs Sativa vs Hybrid seeds

Finding and stabilising the best cannabis genetics is a full time job for cannabis seed companies and top breeders. Cannabis seeds are categorised into two main types, indica and sativa . Indica tend to be short and broad leafed. Sativa plants are often taller with sender leaf fingers. Hybrid cannabis seeds combine the best of indica and sativa genetics.

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Cannabis genetics FAQ

How do breeders create new cannabis strains?

Crossing male and female plants of different strains is how new cannabis strains are created. If the breeding is done carefully the best characteristics (yield, potency, aroma, taste etc) of the parent varieties are passed on to the offspring. The new strain can then be stabilised over several generations of backcrossing. From this new strain you can create feminised seeds and autoflowering cannabis seeds.

What are F1 cannabis genetics?

F1 cannabis genetics means they are first generation from a cross of two parents. When one F1 plant is bred with another brother/sister (from the same batch) an F2 is created. With some poly hybrids, the best cannabis seed producers can require up to 10 generations (F10) before the cannabis genetics are regarded as fully stable and viewed as an inbred line (‘IBL’). This is because the parent genetics contain initially high levels of divergent characteristics which take longer to fully stabilise. The amount of breeding required to create an IBL depends on the genetics being worked with. For example with some stable landrace strains an F5 may well be stable enough to be considered an IBL.

How can genetics affect cannabis?

Cannabis genetics determine everything about the plant you are growing. For those growing cannabis seeds, the stability and consistency of the plants grown from the seeds is vitally important. Cannabinoid production, harvest quantities, aroma and other qualities also need to be delivered. To the cannabis grower, genetics are everything.

How to tell if you have good cannabis genetics?

Research your cannabis seeds carefully. You don’t really know what cannabis genetics you have until you grow them. There is a bond of trust between you and the seed company. If the seed supplier has done their job well you can expect consistently high quality results. Look for cannabis seed companies with a long track record for excellence and a good reputation with growers.

How to choose the right cannabis genetics for your needs?

Ask yourself what the most important qualities are you would like in an ideal world from your next cannabis grow. Do you like citrus flavours or a skunky taste? Lots of THC or a smooth hybrid offering THC in combination with CBD? Indica or sativa? Autoflowering cannabis seeds or photoperiod feminised seeds? If the options seem confusing try the Dutch Passion Seed Finder which guides you to the best cannabis seeds for you in a few clicks.

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