All you need for a stable F1 is a stable parental line or two. Some breeders call stabilised lines also IBL (even if that is not scientifically correct).
If you take a male and a female from the same stable line and cross them, the offspring will be an F1 but because it is the same line, you can also name it P2 (assuming that the parents are from the same generation and would get the rather arbitrary label P1 as first parent generation). Cross the siblings or cross back to a parent will always result in the same stable line
. That's what you do to maintain a landrace variety like Hindu Kush or Durban Poison once it's been selected and adapted for indoor or a simple fibre hemp variety. But, the higher the variability within the line (that isn't the same variability like the one from two different lines...) the healthier your plants. It's better to use several plants for such a cross and avoid inbreeding depression.
If you take two closely related stable lines, you get a stable F1 as well and the offspring is likely similar to the parents. The only two reasons I can see not to do this is A) you don't get something new and exciting, just a mix of the parents with slight differences and B) due to the close relation of the parents the F1 will not profit from a great heterosis effect (aka hybrid vigour). That doesn't need to be bad, a good cross is still good without that (likely even better if the parents start showing inbreeding depression; every little bit of heterosis is better than non).
One can only guess what you have to cross to get the best heterosis effect and that's why people often take very different parents (like from different continents or an indica with a sativa) and thereby increase their chances.
If you like Blueberry, why not buy two from two different breeders so that you get some differences between the parents and then cross them? The offspring will still be a BB like you know it but with a slight boost of hybrid vigour if the parents were bred tightly for several generations. If the parents were very healthy, then you simply get a healthy BB as well, day saved .
Lets say that your NL is only available as clone or you just have one mother, you could self it. That way, the offspring will be very similar to the mother. One or two generations of selfing shouldn't cause too much troubles with a healthy parent... there won't be any profit from heterosis and if you keep on doing the selfing for some more generations, you end up with crap but one seed run to get your 100 seeds for the next 10 years will be no problem. Many commercial fem strains are actually S1's.
Just cross your plants, get some seeds and see what grows. How hard can that be? Even if you get 4 different phenos and only one is worth it; trash the others, the seeds didn't cost you anything. Would be good though if you could recognise the bad phenos at an early stage to safe time, space and light .
If you take a male and a female from the same stable line and cross them, the offspring will be an F1 but because it is the same line, you can also name it P2 (assuming that the parents are from the same generation and would get the rather arbitrary label P1 as first parent generation). Cross the siblings or cross back to a parent will always result in the same stable line
. That's what you do to maintain a landrace variety like Hindu Kush or Durban Poison once it's been selected and adapted for indoor or a simple fibre hemp variety. But, the higher the variability within the line (that isn't the same variability like the one from two different lines...) the healthier your plants. It's better to use several plants for such a cross and avoid inbreeding depression.If you take two closely related stable lines, you get a stable F1 as well and the offspring is likely similar to the parents. The only two reasons I can see not to do this is A) you don't get something new and exciting, just a mix of the parents with slight differences and B) due to the close relation of the parents the F1 will not profit from a great heterosis effect (aka hybrid vigour). That doesn't need to be bad, a good cross is still good without that (likely even better if the parents start showing inbreeding depression; every little bit of heterosis is better than non).
One can only guess what you have to cross to get the best heterosis effect and that's why people often take very different parents (like from different continents or an indica with a sativa) and thereby increase their chances.
If you like Blueberry, why not buy two from two different breeders so that you get some differences between the parents and then cross them? The offspring will still be a BB like you know it but with a slight boost of hybrid vigour if the parents were bred tightly for several generations. If the parents were very healthy, then you simply get a healthy BB as well, day saved
.Lets say that your NL is only available as clone or you just have one mother, you could self it. That way, the offspring will be very similar to the mother. One or two generations of selfing shouldn't cause too much troubles with a healthy parent... there won't be any profit from heterosis and if you keep on doing the selfing for some more generations, you end up with crap but one seed run to get your 100 seeds for the next 10 years will be no problem. Many commercial fem strains are actually S1's.
Just cross your plants, get some seeds and see what grows. How hard can that be? Even if you get 4 different phenos and only one is worth it; trash the others, the seeds didn't cost you anything. Would be good though if you could recognise the bad phenos at an early stage to safe time, space and light
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