The Bard
Well-Known Member
Maybe more of an academic/theoretical question. Some cultivars I have only been able to find in auto form. One notable example is DDA. I am wondering if it is possible through a series of crosses to end up with a photoperiod version of the strain?
One way to go about this would be to determine the lineage with photoperiod ancestors, and try to recreate the strain through breeding. DDA looks to be the offspring of multiple crosses, with Big Devil Auto, Hindu Kush, Jack Herer, and other unknown/undisclosed genetics in the mix. So going this route seems like a bit of a crap-shoot.
But suppose I were to start with a nice specimen of DDA, which by definition would have "pp" as its gene for photoperiod/autoflowering. If I were to cross it with, for example, a Jack Herer photo (which would be PP), the offspring would be 100% Pp in the F1s. And each one, in theory would be a blend of JH and DDA characteristics, roughly 50/50.
If I took one of the photo F1s (Pp) and back crossed to the DDA parent (pp), I should get Pp (50%), and pp (50%) in the F2. I could then take only the Pp offspring, and back-cross to a "pure" DDA (pp), over and over. Each back cross to the pure DDA parent should increase the expression of the DDA traits, but with a photoperiod character. After multiple generations, the dominant P photoperiod gene should be retained, but more and more of the other traits from the DDA should appear as less and less of the JH genes are retained. All that the JH is contributing is the P characteristic.
There of course would be mutations, and lots of other variables, but in theory would this be a way to "de-auto" a cultivar? I don't know if there are the equivalent of sex-linked genes in cannabis (kind of like male baldness in humans)? And maybe there are other recessive characteristics to the DDA that would always be hidden by the dominant gene from the JH?
Maybe @Pennywise @beez0404 or anyone else who has some opinions/expertise on cannabis genetics can share their thoughts? I did try a quick google search on this, but didn't find anything.
On the other hand, maybe there are already Dark Devil seeds out there that are photoperiod, but I have only seen DDA seeds so far.
As I said, a pretty theoretical question, but was just curious.
Thanks!
One way to go about this would be to determine the lineage with photoperiod ancestors, and try to recreate the strain through breeding. DDA looks to be the offspring of multiple crosses, with Big Devil Auto, Hindu Kush, Jack Herer, and other unknown/undisclosed genetics in the mix. So going this route seems like a bit of a crap-shoot.
But suppose I were to start with a nice specimen of DDA, which by definition would have "pp" as its gene for photoperiod/autoflowering. If I were to cross it with, for example, a Jack Herer photo (which would be PP), the offspring would be 100% Pp in the F1s. And each one, in theory would be a blend of JH and DDA characteristics, roughly 50/50.
If I took one of the photo F1s (Pp) and back crossed to the DDA parent (pp), I should get Pp (50%), and pp (50%) in the F2. I could then take only the Pp offspring, and back-cross to a "pure" DDA (pp), over and over. Each back cross to the pure DDA parent should increase the expression of the DDA traits, but with a photoperiod character. After multiple generations, the dominant P photoperiod gene should be retained, but more and more of the other traits from the DDA should appear as less and less of the JH genes are retained. All that the JH is contributing is the P characteristic.
There of course would be mutations, and lots of other variables, but in theory would this be a way to "de-auto" a cultivar? I don't know if there are the equivalent of sex-linked genes in cannabis (kind of like male baldness in humans)? And maybe there are other recessive characteristics to the DDA that would always be hidden by the dominant gene from the JH?
Maybe @Pennywise @beez0404 or anyone else who has some opinions/expertise on cannabis genetics can share their thoughts? I did try a quick google search on this, but didn't find anything.
On the other hand, maybe there are already Dark Devil seeds out there that are photoperiod, but I have only seen DDA seeds so far.
As I said, a pretty theoretical question, but was just curious.
Thanks!
