浙江农业学报 ›› 2021, Vol. 33 ›› Issue (12): 2304-2312.DOI: 10.3969/j.issn.1004-1524.2021.12.10

• 园艺科学 • 上一篇    下一篇

四十八份青花菜品种SSR指纹图谱构建

林朦婕1,2(), 温慧萍1, 肖建中1, 郑强1,*()   

  1. 1.丽水学院 生态学院,浙江 丽水 323000
    2.华南师范大学 生命科学学院,广东 广州 510631
  • 收稿日期:2020-12-29 出版日期:2021-12-25 发布日期:2022-01-10
  • 通讯作者: 郑强
  • 作者简介:* 郑强,E-mail: 106062077@qq.com
    林朦婕(1998—),女,浙江台州人,硕士研究生,研究方向为青花菜种质资源开发与利用。E-mail: 739229834@qq.com
  • 基金资助:
    丽水市科技计划(2017GYX01)

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

摘要:

为筛选一套适用于青花菜品种DNA指纹鉴定的核心简单重复序列标记(simple sequence repeat,SSR)引物,给青花菜品种的特异性、真实性、准确性鉴定提供依据,以12份性状差异较大的青花菜品种为材料,结合聚丙烯酰胺凝胶电泳与荧光毛细管电泳检测技术,从945对芸薹属SSR引物中筛选出20对引物作为青花菜品种的核心SSR引物。利用该套核心SSR引物在48份青花菜主要栽培品种中共扩增出等位基因位点79个,平均每对引物扩增得到等位基因与基因型数量为3.95、5.55个;引物多态性信息含量(PIC)介于0.302~0.750,平均为0.547;20对核心SSR引物的杂合度介于0.350 0~0.784 9,均值为0.608 2。用该套核心SSR引物构建的48份青花菜品种的指纹图谱,每一条指纹都具有唯一性,可表征一个品种,该指纹图谱为青花菜品种鉴定与资源保护提供了科学依据。

关键词: 青花菜, 简单重复序列标记, 指纹图谱, 等位基因, 多态性信息含量

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

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