As of 2020, research on organellar genomes shows that B. nigra (BB) is likely the "mother" of B. carinata (BBCC) and that B. rapa (AA) likely mothered B. juncea. The situation with B. napus (AACC) is more complex: some specimens have a rapa-like organellar genome, while the rest indicate an ancient, unidentified maternal plant.

Data from molecular studies indicate the three diploid species are themselves paleohexaploids.

Allohexaploid species

In 2011 and 2018, novel allohexaploids

1.Previous
3.Next