^yeah that's what I thought too.
never looked into the fast flowering much, but from the little blurbs I read about 'fast flowering f1', I assumed it was just heterozygous autoflower.
I've never bred with autoflowers myself (yet), but from what I read about it, it does work as a recessive gene considering complete autoflowering, but it's not completely without effect with just 1 autoflowergene. from what I heard, it takes a few weeks off the finishing date, and makes the plant more 'sensitive', as in once it's triggered it's harder to reverse as a normal photo, it reacts quicker to changes in daylight next to absolute nightlength, and is easier to trigger by stress like rootbound.
it's sometimes called semi-auto too(like the strain thaipassion for example), but semi-auto is also used for strains that are just very early without autogene, so it's a bit confusing. but it's a thing that's been wandering around forums, usually already very early strains crossed with autoflowers.
fast flowering seems like they used that effect in breeding, and created a new name for it, good/smart move imo.
my theory of the mechanics behind it(not proven, just what I think is likely based on what I read on forums about the autoflowergene) is that the autoflowergene is a defect somewhere in the signal-chain towards flowering, basicaly locking the switch to produce flowerhormone in a constant ' on-switch'. you would need a certain tresshold of flowerhormone(or some other thing in the chain towards it), and one auto-gene by itself is not enough to reach that tresshold. but give it just a little triggering from the other, normal gene, and it immediatly is above the tresshold.
my guess is also that auto's still carry a trigger, as in a certain amount of dark hours they would need to flower, but that never shows itself due to the autoflowergene surpressing/hiding it. but no proof at all for that, just a guess, if I ever have the time and resources I would like to test it(cross autos to photos and see when the desendants of autoflowers with the autoflowergene crossed out start flowering). if my guess is right, you would see differences in how early those fast flowering f1's start flowering depending on which autoflower you use as parent.
never looked into the fast flowering much, but from the little blurbs I read about 'fast flowering f1', I assumed it was just heterozygous autoflower.
I've never bred with autoflowers myself (yet), but from what I read about it, it does work as a recessive gene considering complete autoflowering, but it's not completely without effect with just 1 autoflowergene. from what I heard, it takes a few weeks off the finishing date, and makes the plant more 'sensitive', as in once it's triggered it's harder to reverse as a normal photo, it reacts quicker to changes in daylight next to absolute nightlength, and is easier to trigger by stress like rootbound.
it's sometimes called semi-auto too(like the strain thaipassion for example), but semi-auto is also used for strains that are just very early without autogene, so it's a bit confusing. but it's a thing that's been wandering around forums, usually already very early strains crossed with autoflowers.
fast flowering seems like they used that effect in breeding, and created a new name for it, good/smart move imo.
my theory of the mechanics behind it(not proven, just what I think is likely based on what I read on forums about the autoflowergene) is that the autoflowergene is a defect somewhere in the signal-chain towards flowering, basicaly locking the switch to produce flowerhormone in a constant ' on-switch'. you would need a certain tresshold of flowerhormone(or some other thing in the chain towards it), and one auto-gene by itself is not enough to reach that tresshold. but give it just a little triggering from the other, normal gene, and it immediatly is above the tresshold.
my guess is also that auto's still carry a trigger, as in a certain amount of dark hours they would need to flower, but that never shows itself due to the autoflowergene surpressing/hiding it. but no proof at all for that, just a guess, if I ever have the time and resources I would like to test it(cross autos to photos and see when the desendants of autoflowers with the autoflowergene crossed out start flowering). if my guess is right, you would see differences in how early those fast flowering f1's start flowering depending on which autoflower you use as parent.
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