auto x (photo x auto) = ??

[Bob's Auto's]

But again, pollinating the f1 female plants with a new af male, would create a new f1. It would not increase the percentage of autoflower plants.

Then you suggest that there are multiple alleles on which the autoflower gene (a) nests? I find this very interesting indeed... I assumed (probably like @CannaDaTaBiz) that the 'a' gene was on the same allele, which would mean Pa X aa = Pa, Pa, aa & aa. Do you have some documentation about this? Or a reference to a good book I could buy to read up on this subject? I wanted to try my hand at breeding myself purely out of interest how it worked and off course the bud I get from it is a nice reward

 

[Proph]

Then you suggest that there are multiple alleles on which the autoflower gene (a) nests? I find this very interesting indeed... I assumed (probably like @CannaDaTaBiz) that the 'a' gene was on the same allele, which would mean Pa X aa = Pa, Pa, aa & aa. Do you have some documentation about this? Or a reference to a good book I could buy to read up on this subject? I wanted to try my hand at breeding myself purely out of interest how it worked and off course the bud I get from it is a nice reward

The link you posted to the breeders bible is a solid source. Or you can Google "autoflower x photoperiod Punnett Square". Here is a link that explains what I what saying. The images that were posted are from what is listed as a photo period x auto flower f2.. But the original question is about pollinating an F1 female (Photo x auto) with male auto pollen from a new strain. That would look like
Pa x aa in a punnett square. If he was using the same stable auto pollen as used in the f1 cross (backcrossing).. It would be possible to get 50% autos from the f2s.. But he's introducing new genetics. That's were things get tricky. If the new genetics aren't stable or if only certain traits get passed on, the offspring will be a dice roll. But either way, you are still selecting plants to pollinate from only 25% of the possible expressions at most.

Autoflower Breeding & Seed Production | Autoflowering Cannabis Blog

In this article find out how to make your own autoflower seeds, breed autoflowering cannabis plants and even create a new autoflowering weed strain.

www.autoflowering-cannabis.com

 

[CannaDaTaBiz]

The link you posted to the breeders bible is a solid source. Or you can Google "autoflower x photoperiod Punnett Square". Here is a link that explains what I what saying. The images that were posted are from what is listed as a photo period x auto flower f2.. But the original question is about pollinating an F1 female (Photo x auto) with male auto pollen from a new strain. That would look like
Pa x aa in a punnett square. If he was using the same stable auto pollen as used in the f1 cross (backcrossing).. It would be possible to get 50% autos from the f2s.. But he's introducing new genetics. That's were things get tricky. If the new genetics aren't stable or if only certain traits get passed on, the offspring will be a dice roll. But either way, you are still selecting plants to pollinate from only 25% of the possible expressions at most.

Autoflower Breeding & Seed Production | Autoflowering Cannabis Blog

In this article find out how to make your own autoflower seeds, breed autoflowering cannabis plants and even create a new autoflowering weed strain.

www.autoflowering-cannabis.com

Actually the father of the photo x auto cross uses same auto pollen that was the father of this other auto i was thinking of using.

Its like auto x photo F3, lets call this A, then crossed to separate auto called B, so now its offspring is AB and this AB is the male i have soon dropping pollen. Which i will use for making F2 seeds of this line.

Then i have some seeds that are about to surface from soil soon that are the result of me throwing this A pollen to a photo, which we can call C and their offsprings we can call AC. Im going to make F2 seeds from these to make AC F2 and then AC f3 etc


But the thing is that im not pollinating the whole plants, but just making some seeds with pollen im collecting separately. So i could pollinate the AC F1 plants with both AC male pollen and AB male pollen.

I could then maybe make some AC x AB seeds later. Would they then give better AF than AC F2?


From what i maybe understood is that it wont help much if at all on the first cross, but maybe because they are relatives. But because the gene pool simply holds more from AF side, wouldnt it cause the AF trait to come up more from later generations t least if not on the first cross?

 

[parsing_trees]

So if i have an female F1 mix between auto and photo(ofc af trait hidden), and then pollinate it with auto male. Does this significantly increase the % of autos in next generation, compared to just making F2 seeds with photo x auto?

To answer your original question: If you take an F1 cross (af trait hidden) of an auto and a photo and then cross it with another auto, you should get approximately 50% autoflowering, 50% photoperiod in the offspring, because they get the autoflowering trait from the auto parent combined with a 50% chance of autoflowering from the auto/photo F1. (This is assuming autoflowering is controlled by the same recessive trait on both sides, which is consistent with everything I've read.)

Whether this is worth doing depends on which particular autoflowering strains you use. As you said, there will be less of the original photoperiod grandparent's genes in the result.