Acta Agriculturae Zhejiangensis ›› 2021, Vol. 33 ›› Issue (12): 2304-2312.DOI: 10.3969/j.issn.1004-1524.2021.12.10

• Horticultural Science • Previous Articles     Next Articles

Construction of DNA fingerprint for 48 broccoli cultivars

LIN Mengjie1,2(), WEN Huiping1, XIAO Jianzhong1, ZHENG Qiang1,*()   

  1. 1. College of Ecology, Lishui University, Lishui 323000, China
    2. College of Life Science, South China Normal University, Guangzhou 510631, China
  • Received:2020-12-29 Online:2021-12-25 Published:2022-01-10
  • Contact: ZHENG Qiang

Abstract:

To screen a set of core SSR (simple sequence repeat) primers for identifying of broccoli cultivars, 12 genetically different broccoli varieties were chosen as screening materials, combined polyacrylamide gel electrophoresis and fluorescence capillary electrophoresis techniques, 20 pairs of core SSR primers were finally selected from a total of 945 pairs of Brassica SSR primers. Using these 20 pairs of core primers, 79 polymorphic alleles were amplified from 48 common broccoli cultivars, with 3.95 polymorphic alleles and 5.55 genotypes per pair of primer in average. The polymorphism information content (PIC) value ranged from 0.302 to 0.750, with an average of 0.547, and the heterozygosity ranged from 0.350 0 to 0.784 9, with an average value of 0.608 2. Each of the fingerprints of 48 broccoli cultivars constructed with the core SSR primers was unique and could be used to characterize one cultivar, which provided a scientific basis for broccoli variety identification and resource protection.

Key words: broccoli, simple sequence repeat molecular marker, fingerprint, allele, polymorphism information content

CLC Number: