I scooped out a bunch of seeds from a fresh papaya (a very good one, seems like prime genetic material). I didn't have time to clean them right away, so I put them in the fridge to prevent the pieces of pulp and sarcotesta around them from decomposing and smelling until I could clean them.
My fridge is a bit unstable, and it turns out the seeds ended up below zero. Probably only by a few degrees, at worst. They would have been in that state only for a few hours. However, ice crystals had formed on them, and the pouch had hardened a little bit.
I have now taken them out to thaw. How will this episode affect germination?
And if a plant does sprout from these seeds, can it be any different because of it?
Update: They sprouted! This subject now continues on Biology SE.