Brassica rapa Genome 2.0： A Reference Upgrade through Sequence Re-assembly and Gene Re-annotation

Brassica rapa includes many important crops that are cultivated as vegetables, condiments, and oilseeds. Recently, the Brassica genomes have been sequenced extensively： a B. rapa draft reference genome in 2011 （Wang et al., 2011）, a Brassica oleracea in 2014 （Liu et al., 2014）, a Brassica napus in 2014 （Chalhoub et al., 2014）, and Brassica nigra and Brassica juncea in 2016 （Yana et al.. 2016）. The first released B.