Let's see what will happen

After reading about heat and cold treatments to induce polyploidy, I had to do this. but I had no diploid seedlings at hand but had several dozens of tetraploid seedlings, mostly OP Basye’s Legacy seedlings. Let’s see what could result from this. Not hoping much, but the seedlings did survive after 30 hours in iced water. Temps weren’t recorded. Just want to see how long they could survive. I’ve always liked the thought of breeding roses on a higher level of ploidy–