Comparison of the cytoplastic genomes by resequencing: Insights into the genetic diversity and the phylogeny of the agriculturally important genus Brassica

The genus Brassica mainly comprises three diploid and three recently derived allotetraploid species, most of which are highly important vegetable, oil or ornamental crops cultivated worldwide. Despite being extensively studied, the origination of B. napus and certain detailed interspecific relationships within Brassica genus remains undetermined and somewhere confused.