The information of the genome sequences V2.x of B. rapa (Chiifu):

1. Version 2.0 Scaffolds: It is a de novo assembly of scaffolds based on bulk of new illumine reads (Cai etc., 2017, Molecular Plant).

2. Version 2.1 Scaffolds: Gap closing of version 2.0 Scaffolds using PacBio reads, corresponding to the PacBio gap-closing scaffolds version referred in the paper (Cai etc., 2017, Molecular Plant).

3. Version 2.1 Pseudo-chromsomes: version 2.1 Scaffolds were aligned to chromosomes based on genetic map of population between Bre (chinese cabbage) and Wutacai (Pak choi group).

4. Version 2.5 Pseudo-chromsomes: corrected and updated from version 2.1 Pseudo-chromsomes, it aligned version 2.1 Scaffolds to chromosomes based on genetic map as that used in genome assembly version 1.5 (population between Chiifu and Z16, both Chinese cabbages).