Amphidiploidy in plants
A
cross between two separate species, radish (Raphanus) and cabbage (Brassica), both with 2n = 18, allows the two n = 9 gametes to produce a
sterile 2n = 18 amphidiploid
hybrid.
Polyploidization of
this
hybrid
produces a fertile
tetraploid
plant, the "rabbage" (Raphanobrassica) (4n = 36). The rabbage
unfortunately
combines the leaves of
the
radish and the root of
the
cabbage, rather than the edible leaves and roots!