James,
Unfortunately Laszlo's plant is also a chimera so it will give white or green but no variegated seedlings. The ones that are splashed are really mottled so it's not as pretty a variegation, but they are the ones useful in breeding. These have both mutant plastids and chloroplasts together in the same cell. These will produce ovule cells that contain both types of plastid and thus give rise to variegated plants. I keep several streaked hosta to use as a pod parent (chloroplasts are inherited maternally) and then put various pollens on these. Almost all of the variegated hosta that are on the market go back to one of my seedlings called 73-2, that gave almost 100% variegated seedlings.
Hope that helps!
Kevin
