Cactus / Astrophytum hybrid

This grafted cacti is Astrophytum hybrid, capricorne v niveum x asterias cv super kabuto.

I sowed seeds on 28/08/2010. The germination sucsess retio was not too bad but abnormal seedlings were included quite many. I think both of capricorne and asterias are Astrophytum but are in different flower groups and makes this stressed gene issue. I grafted two seedlings. One was a normal seedling and the other was abnormal one. This one was normal.