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2024 State of the genepool discussion.

VerdantGreen

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as i said above, im not a breeder , but i've given human genetics exams in college, and i dont get what you call uniformity, because the only way to have uniformity is homozygosis which in turn means you've got a super reduced genetic pool hence you're talking about IBL. If you believe you can have uniformity and a big gene pool you're plain wrong. you can have kindah uniform ( still not uniform) offsprings by crossing homozygous plants, but still, the gene pool is super reduced and unless you're into genetic engineering using CRISPR/CAS9, reducing the genepool too much is not a great idea since you are carrying with you shitty genes together with what you're selecting in most cases, just take a look at commercial fruit plants, they are so shitty that you must graft them on semi-wild or genetically modified rootstocks . I dont want that with cannabis, do you? :D
This !
At the end of the day, cannabis is wind pollinated and therefore a natural outcrosser. THAT is what it wants to keep a population healthy.. and this is in direct conflict with those that think the answer to good weed is to inbreed so much that there is no variation. When cannabis is so easy to propagate with clones.. i don't see ultra 'worked' uniformity as my goal when i make seeds.. because you will have already excluded so much of the genepool from those worked genetics that people will never be able to get back.

Now, some people may not agree with me there, but that is no problem - because they have absolutely no obligation to buy mine or anybody else's seeds. They can go and look for someone else who is doing it right in their opinion and buy those seeds.... or trade seeds or whatever. A market with plenty of choice is surely a good thing ?

What is pretty dumb imo is the people that seem to resent someone who is doing their thing and making and marketing seeds because their methods/process differ from what they see as 'proper'... even though those methods may well meet with wholesale approval from other growers who buy seeds.

everyone gets to choose what they want. Growers/breeders/chuckers shouldn't presume that their opinions about genetics and breeding practices are the only valid ones and that all others are worthless. i see each project as different, separate, and try to choose what i think is the best method... sometimes S1s, sometimes outcrossing.. backcrossing, sometimes just trying to preserve as many genetics and combinations as possible. It depends.. and why limit myself by declaring certain things universally wrong ???

eg. i have no interest in Autoflowering weed... but even so, i can see that the autoflowering trait is probably one of the most important advancements in drug cannabis in the last few decades because it makes growing weed possible at latitudes where it was previously marginal... yet countless people will resent autoflowers because they personally don't want them and seem unable to see the bigger picture.

VG
 

pipeline

Cannabotanist
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Legal limit plant counts is changing the demand for seed. There is higher demand for true breeding /feminized seed. But yeah, then you exclude so much of the gene pool, that line isn't going to be very good going forward into the future unless outcrossed to something with more variation. It will end up bottlenecking the genetics and will develop more mutations and inbreeding depression.
 

dogzter

Drapetomaniac
Ahh I'm just trying to copy you oh great one

Uniformity and IBL are two different things !
You don't need IBL to have uniform plants.

No, because when you take P1 and cross it to the offspring or self it, that's IBL, but it's not uniform.
Two different things again, you don't need to dwell in the line you hold in order to stabilize it, you can cross it to other genetics and work from there, it won't be IBL but you can reach uniform results either way.
IBLs are just genetics that had been worked on only in that genetic pool direction, no outcrossing.
That's it, if the breeder knows what he is doing, that IBL will be uniform but in today's market you see BX1 and BX2 that are all over the place, meaning they don't reach uniformity.

Yes, IBL is inbreeding, meaning you only breed with itself or offspring, no outcross.
The definition is accurate but people do not follow it through as P1 with sister is IBL too but it's only the 1st gen so very far from true breed or stability.
Funny I cant find a single pic of anything you have done.
All talk and absolutely nada else.
😆
 

Mithridate

Well-known member
Nice can of worms eh 🙂

It seems ibl has been touted as the final goal, something to aspire to when in fact, if we look at breeding charts, they're but a step in the breeding of early varieties.

Let's not get too anal about definitions either, we're but humble gardeners. Science at large can ask for 98.6% with their millions in funding and 30000 employees.

For a lil project of mine, I've started to pop a few hundred seeds every 3 weeks, sure.. they dont all get to reach flower but the seemingly endless list of repetitive tasks is soul wrenching, plus the damn hobby can quickly become a money pit if you're not careful.
Respect to all the gents who have been doing this with any seriousness for years. They are tough people.
 

Dime

Well-known member
Still gotta be only 1 pheno expression from a sibling mating...sticking to my guns on that...maybe alleles are only 87%...but if it spits out only 1 pheno ...you have an IBL
IBL usually lose vigor but hybridizing restores it. You can have plants that look the same but you may lose other traits ex: potency. In dogs for instance, you may get the breed standard for looks but lose some of the temperament or gait or whatever.
 

PetePrice

Active member
Why do you want IBLs? Hyb called it right years back with regards to this.
Who has all the other IBLs to make the true F1s with?
How many times has this panned out with cannabis? Ie the F1 produced exceptional seed lots and loads of keepers/elites?
You are searching for individuals not F1 seed lots.
Selfing is still the best shot until DHs are abundant and affordable. Seems most are still stuck looking at corn! if we are just breeding for vigour then go.
I can understand having inbred lines for use but not for pure F1 use.

And I def resent autos, kill them at will.
 

mudballs

Well-known member
Veteran
I think only the concept of what defines an IBL came up after i chimed in from a trifectaseeds post...dont look too far into this guys.
 

PetePrice

Active member
Ibl is defined as:
Relatively homozygous line produced by
inbreeding and selection.

Another source states:
A nearly homozygous line obtained through continuous inbreeding of a cross pollinated species with selection accompanying inbreeding.

"Relatively" "nearly".. ive seen 98.6% homozygous given as a standard minimum.

Quantitative traits are usually easy to fix, seed shape and color, structure, flower color and shape, autos, cannabinoid ratio and the like.
Those imo should be close to 100%, no excuse.

Qualitative traits are polygenic and can be a pita to fix, quality of high, yield and friends. Still.. transgressive segregant traits are inheritable.

Ibl title based on number of filial generation can kick rocks.
98.6 per cent for all traits haha and who has seen such a line in cannabis? Esp without any selfing? Better looking into isogenic lines well NIL ones.
Fully agree that certain traits can be fixed in easily enough ie pure purple seed lots that look very alike but it will only be standouts from that pool/ pop that give you those quality types of high and that is were you want individuals.
 

Raco

secretion engineer
Moderator
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Happy New Year everyone!! :)

rw.JPG
 

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