That is interesting. Everything I had read was that Atemoya was not graft compatible with reticulata rootstock.
Do you know what variety of each?
I'm building a cocktailtree from my annona's...the mother tree is a red colored annona (grafted onto unknown rootstock), here on the forum it is called isan (esan) indigo i believe but i bought it here in Thailand. It gives normal annona's (noina) with a red outside skin.
I grafted african pride on it, and yellow king from taiwan and pineapple annona from taiwan.....especially african pride grows really fast on this tree.
The red illama i grafted this week is also still growing and broke the parafilm now. The ones i grafted yesterday are still dormant.
In Thailand there are many many atemoya's for sale now (also cherimoya), mostly from Taiwan but also from the US and Israel..i wonder what they used as rootstock since we only have pet pakchong here as a local atemoya. I read that they can be grafted onto reticulata so that's why i tried it and it works good, so far.
African pride already started blooming in 8 weeks after being grafted...
But it is summer now and very hot, the illama's stopped growing (except that grafted scion) and my rollinia is going to die i think..(from the heat of 40 celcius daily?)
I'm going to graft rollinia onto the cocktailtree as well now, let's try it...nothing to loose.