N
NOYB
Maybe Subrob came over after he dusted some of his plants and carried a cloud of pollen with him...LOL. Just speculating here (not about Sub) but from what you posted that's what came to mind for me. If an exact copy except male a possibility is the Afghani was not dominant (basically transparent in the resultant cross) and the Dabney overpowered it genetically speaking. My breeder friend has taught me that structure is usually dictated by the male. Next time I see him will chat more about this. Just doesn't sound like hermie activity with only the preflowers producing beanos.
Maybe someone else can chime in.
EDIT - just may also be if accidentally pollinated like you said might be a possibility that the pheno that showed up just happened to be Dabney dominant BUT that Dabney could genuinely be dominant in the cross and if so I'd be inclined to say it's traits might show up strong in the cross of the Dabney x ? to the Purple Joy. You won't know really until peeps grow out the Purple Joy x the Dabney Mystery and see what they express. I had a J1 x (Purple Afghani x Oaxacan) and 1 out of like 20 beans looked liked an Afghani so the Purple Afghani mom basically disappeared in the resultant offspring.
Maybe someone else can chime in.
EDIT - just may also be if accidentally pollinated like you said might be a possibility that the pheno that showed up just happened to be Dabney dominant BUT that Dabney could genuinely be dominant in the cross and if so I'd be inclined to say it's traits might show up strong in the cross of the Dabney x ? to the Purple Joy. You won't know really until peeps grow out the Purple Joy x the Dabney Mystery and see what they express. I had a J1 x (Purple Afghani x Oaxacan) and 1 out of like 20 beans looked liked an Afghani so the Purple Afghani mom basically disappeared in the resultant offspring.