I have been soaking my adenium seeds for several days. I need to plant them today!! I usually plant within 24 hours, but I wanted to check on viability/seed germination. The photos below were taken a few minutes ago. As can be seen, some embryos popped out of their seed casing and are lying at the bottom of the bowl.
"Yellow Duckling" Sep. 15 (my zone)
This bowl has seeds that are popping open and will soon release the embryos.
"Star" Sep. 15
There are two other varieties that are also popping open and releasing embryos.