Breeding histories and selection criteria for oilseed rape in Europe and China identified by genome wide pedigree dissection

Wang, Xiaohua; Long, Yan; Wang, Nian; Zou, Jun; Ding, Guangda; Broadley, Martin R.; White, Philip J.; Yuan, Pan; Zhang, Qianwen; Luo, Ziliang; Liu, Peifa; Zhao, Hua; Zhang, Ying; Cai, Hongmei; King, Graham J.; Xu, Fangsen; Meng, Jinling; Shi, Lei

Abstract

Selection breeding has played a key role in the improvement of seed yield and quality in oilseed rape (Brassica napus L.). We genotyped Tapidor (European), Ningyou7 (Chinese) and their progenitors with the Brassica 60?K Illumina Infinium SNP array and mapped a total of 29,347 SNP markers onto the reference genome of Darmor-bzh. Identity by descent (IBD) refers to a haplotype segment of a chromosome inherited from a shared common ancestor. IBDs identified on the C subgenome were larger than those on the A subgenome within both the Tapidor and Ningyou7 pedigrees. IBD number and length were greater in the Ningyou7 pedigree than in the Tapidor pedigree. Seventy nine QTLs for flowering time, seed quality and root morphology traits were identified in the IBDs of Tapidor and Ningyou7. Many more candidate genes had been selected within the Ningyou7 pedigree than within the Tapidor pedigree. These results highlight differences in the transfer of favorable gene clusters controlling key traits during selection breeding in Europe and China.

Citation

Wang, X., Long, Y., Wang, N., Zou, J., Ding, G., Broadley, M. R., …Shi, L. (2017). Breeding histories and selection criteria for oilseed rape in Europe and China identified by genome wide pedigree dissection. Scientific Reports, 7(1), Article 1916. https://doi.org/10.1038/s41598-017-02188-z

• Journal Article Type: Article
• Acceptance Date: Apr 13, 2017
• Online Publication Date: May 15, 2017
• Publication Date: 2017-12
• Deposit Date: May 17, 2017
• Publicly Available Date: May 17, 2017
• Journal: Scientific Reports
• Electronic ISSN: 2045-2322
• Publisher: Nature Publishing Group
• Peer Reviewed: Peer Reviewed
• Volume: 7
• Issue: 1
• Article Number: 1916
• DOI: https://doi.org/10.1038/s41598-017-02188-z
• Public URL: https://nottingham-repository.worktribe.com/output/860846
• Publisher URL: https://www.nature.com/articles/s41598-017-02188-z