Raphanobrassica

Brassicoraphanus or '× Brassicoraphanus''' is any intergeneric hybrid between the genera Brassica (cabbages, etc.) and Raphanus (radish). The name comes from the combination of the genus names. Both diploid hybrids and allopolyploid hybrids are known and share this name.

==History== 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. P0: Raphanus 2n_R = 18 x, a new crop in agriculture Brassica 2n_B = 18 F1: sterile hybrid n_R + n_B Some of F1 spontaneously doubles their ploidy, resulting in the fertile allopolyploid 2n_R + 2n_B