I have nutted up my garden with inexperience once, or 3 times. Made seeds of 25 varieties from them, grew out 4 or 5 and hermies make a high rate of hermy offspring. There are factors at play
Propensity to intersex is more heavily in the genetics.
I use them for sprout tea now.
I have had a few intersex situations from various seed makers which got me really looking into things and reduce the stress in my grow room. Once the Par is Parfect you are causing stress to bombard them with more photons, apprantly. OR heat or food or say hello to my little friends, fucking pests. Bugs will intersex all but the most stable strains. I actually had 1 strain survive in the centre of all that shit and not seed up.
Rado Doho Cookie Crisp (a cookie cross too, go figure) A REGULAR seed, and i am going to have to run a Grape Geleee soon
I run more regs than ever before and after having SO many seed problems I am running more stable gear in places to get some buds that do not require fine straining. Hash and Dabs are making my stash very useful but its annoying.
Testers are one thing, Completely untested and out to market is happening A LOT and you are going to have intersex, some gear just does not get a long.
As a seed maker though, intersex has a lot to do with condtions and polyhybirds. Its a tough one. When I see growers having the problem and I know they grow well, then I believe it is strains not getting along and, i can get another apple, or grape strain that pack goes in a different tote (the tote of no return).
What it has done is show me to get better glasses and really scope things, and FIX them. And if its ballsy, do i really need it in the garden? Lots of gear wont ball up.