https://www.ahs.ac.cn/images/0513-353X/images/top-banner1.jpg|#|苹果
https://www.ahs.ac.cn/images/0513-353X/images/top-banner2.jpg|#|甘蓝
https://www.ahs.ac.cn/images/0513-353X/images/top-banner3.jpg|#|菊花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner4.jpg|#|灵芝
https://www.ahs.ac.cn/images/0513-353X/images/top-banner5.jpg|#|桃
https://www.ahs.ac.cn/images/0513-353X/images/top-banner6.jpg|#|黄瓜
https://www.ahs.ac.cn/images/0513-353X/images/top-banner7.jpg|#|蝴蝶兰
https://www.ahs.ac.cn/images/0513-353X/images/top-banner8.jpg|#|樱桃
https://www.ahs.ac.cn/images/0513-353X/images/top-banner9.jpg|#|观赏荷花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner10.jpg|#|菊花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner11.jpg|#|月季
https://www.ahs.ac.cn/images/0513-353X/images/top-banner12.jpg|#|菊花

Acta Horticulturae Sinica ›› 2025, Vol. 52 ›› Issue (9): 2343-2352.doi: 10.16420/j.issn.0513-353x.2024-0944

• Genetic & Breeding·Germplasm Resources·Molecular Biology • Previous Articles     Next Articles

Double Populations Genetic Mapping of the Main QTL Locus qDCA.C8-1 for the Curd Appearance Trait of Cauliflower

SHENG Xiaoguang1, YU Huifang1, WANG Jiansheng1, SHEN Yusen1, SONG Mengfei1, QIAO Shuting2, LIN Fan3, DU Sifan4, LI Jiaojiao3, GU Honghui1,*()   

  1. 1 Institute of VegetablesZhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
    2 Sanya InstituteChina Agricultural University,Sanya, Hainan 572025, China
    3 College of Horticultural ScienceZhejiang Agriculture and Forestry University, Hangzhou 311300, China
    4 College of Life SciencesChina Jiliang University, Hangzhou 310018, China
  • Received:2025-03-20 Revised:2025-05-26 Online:2025-09-25 Published:2025-09-24
  • Contact: GU Honghui

Abstract:

This study focused on Brassica oleracea crops,particularly cauliflower,and performed genetic mapping analysis of the curd appearance trait. By constructing two F2 genetic segregating populations and utilizing a QTL mapping approach based on high-density genetic maps,a major locus(qDCA.C8-1)controlling cauliflower curd appearance was successfully mapped on chromosome 8. Subsequently,an F2:3 sub-segregating population targeting the qDCA.C8-1 foreground locus was developed. Using bulked segregant analysis(BSA)sequencing technology,the target locus was re-mapped,further confirming its linkage with the curd appearance trait. The qDCA.C8-1 locus demonstrated consistent and significant genetic effects across different genetic populations,and its reliability was verified through KASP markers.

Key words: cauliflower, curd appearance, two genetic populations, gene mapping