Population genomic insights into the domestication of <i>Brassica juncea</i> var. <i>tumida</i>.

ABSTRACT: Brassica juncea var. tumida, commonly known as Zha Cai, is a pickled stem mustard widely cultivated in southern China. Its most distinctive trait is the swollen stem, which serves as the primary economic organ for harvest. However, the origin and domestication history of tumida remain unclear, hindering genetic improvement and molecular breeding efforts. Here, we assembled a chromosome-level genome of the landrace 'YAXY' from Chongqing-the center of tumida diversity-totaling 909.1 Mb with a contig N50 of 4.17 Mb. We also collected and resequenced 203 tumida accessions across southern China. By integrating the 'YAXY' reference genome with population data, we generated the first comprehensive tumida variation dataset, comprising 1.38 million single-n

SUBMITTER: Wang H 

PROVIDER: S-EPMC12933663 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature