Acta Agriculturae Zhejiangensis ›› 2022, Vol. 34 ›› Issue (6): 1183-1192.DOI: 10.3969/j.issn.1004-1524.2022.06.09

• Horticultural Science • Previous Articles     Next Articles

Development and application of KASP marker of BoCAL gene related to curd development in cauliflower

SHENG Xiaoguang(), SHEN Yusen, YU Huifang, WANG Jiansheng, ZHAO Zhenqing, GU Honghui()   

  1. Institute of Vegetable, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
  • Received:2022-02-15 Online:2022-06-25 Published:2022-06-30
  • Contact: GU Honghui

Abstract:

BoCAL is one of the key genes controlling the curd formation in cauliflower. In order to improve the efficiency of BoCAL genotype identification of cauliflower, a competitive allele specific PCR (KASP) marker (BoCAL-KASP1) was developed according to the functional single nucleotide polymorphism (SNP) mutation of the 16th base (Pe5 + 16) G-T in the fifth exon of BoCAL. Using this KASP marker, BoCAL alleles were genotyped in 86 core accessions from seven variants of Brassica. oleracea and related wild species. It turned out that a total of thirty-six accessions showed the genotype of T:T, including twenty-eight cauliflower, six broccoli and two imported landraces; forty-three accessions had the genotype of G:G, including two cauliflower, nine broccoli, six cabbage, five Chinese kale, three kohlrabi, seven kale, two Brussels sprouts, four imported landraces and five related wild species; Seven accessions showed heterozygous genotype T:G, including two broccoli, two kale and three imported landraces. The results of KASP identification of BoCAL genotype of these 86 accessions were completely consistent with those of cleaved amplified polymorphic sequences (BoCAL-CAPS1) identification. Thus, the KASP marker developed in this study could efficiently and accurately identify the genotype of BoCAL target locus, so as to provide reliable functional markers for cauliflower curd development research and molecular breeding.

Key words: cauliflower, curd development, BoCAL gene, KASP marker

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