If that's the case, should I assume that growing a plant from the green
top of the pineapple will yield a clone of the original plant?


Don't know if this will help but an online friend of mine from Hawaii once told
me to plant them you twist the green part of the plant off and plant it in soil
or in a pot. He said that is how he does them, Now I've never tried growing one
so I don't really know how well it is. I see other people have suggested about
the same thing only cutting it off.
Steve