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That's not really what I'm asking, though. I feel pretty clear on the process at the Punnett square level, and I've made auto seeds with both male autos and reversed (STS) females before. My question is about breeding, and particularly the population size -- whether going through that process with such a small population (around a dozen) is a waste of time, because I won't be able to do much selection compared to people who have dozens, hundreds, even thousands of plants to pick breeding candidates from. I'm pretty sure I could go through the steps and end up with something autoflowering, but if I'm going to spend all the time to turn a photoperiod strain I love into an auto, I'd also want the result to be a good representation of that strain.
So: Is it a waste of time to attempt a photo-to-auto breeding project if I stick to a max plant count around a dozen? Have any of you tried, and if so, how did it turn out? Is doing some of the generations multiple times to draw from a larger pool going to make a difference, or is 2*12, 3*12 still way too small?
I don't think it's a waste of time to use a small population if you can find the traits you're after in them. I've been pollen chucking for 20 years but just getting into the details of breeding and haven't really delved into auto breeding much. With photos you can select the best few girls, get clones for backup, pollinate and grow out to sample the bud, check for hermies then just keep seeds from the plant or plants that check all the boxes. Then do it again with your clones to work toward stabilizing a good strain.
Half the seeds getting sold these days are F1s or F2s and for the same prices as beans that took some breeder generations of selection and a shit-ton of work to make
With autos it seems that it's trickier to weed out bad traits like hermaphrodism when you can't get cuttings to restart a good plant but I'll be trying.