Brassicoraphanus

Raphanobrassica Brassicoraphanus is any intergeneric hybrid between the genera Brassica (cabbages, etc.)

Early experimental crosses between species of these two genera had been sterile or nearly sterile, but large-scale experiments by Soviet agronomist Georgi Dmitrievich Karpechenko using Raphanus sativus and Brassica oleracea were remarkable because some of the plants produced hundreds of seeds.

The second generation were allopolyploids, the result of gametes with doubled chromosome numbers.

[4] Karpechenko wanted a plant with leaves of a cabbage and the roots of a radish, but got the opposite.

[5] Two other fertile forms of Brassicoraphanus are known by the following informal names: Currently, it is thought that a great part of the flowering plants have some hybridization and polyploidization among their ancestors.

Hybrid speciation by spontaneous allopolyploidy.