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中国农学通报 ›› 2022, Vol. 38 ›› Issue (12): 95-99.doi: 10.11924/j.issn.1000-6850.casb2021-0726

所属专题: 生物技术

• 生物科学 • 上一篇    下一篇

甜菜全基因组SSR引物的筛选与评价

李乔乔1,2(), 王宇晴1,2, 刘蕊3, 刘乃新1,2, 邳植1,2, 吴则东1,2()   

  1. 1黑龙江大学现代农业与生态环境学院,哈尔滨 150080
    2黑龙江省普通高校甜菜遗传育种重点实验室/黑龙江大学,哈尔滨 150080
    3黑龙江种业技术服务中心,哈尔滨 150008
  • 收稿日期:2021-07-29 修回日期:2021-11-05 出版日期:2022-04-25 发布日期:2022-05-18
  • 通讯作者: 吴则东
  • 作者简介:李乔乔,女,1998年出生,山西晋城人,硕士,主要从事甜菜遗传及分子育种的研究。通信地址:150080 黑龙江省哈尔滨市南岗区学府路74号 黑龙江大学现代农业与生态环境学院,Tel:16635049472,E-mail: 18234660359@163.com
  • 基金资助:
    财政部和农业农村部“国家现代农业产业技术体系资助(CARS-170111);国家作物种质资源库“甜菜分库运行服务”(NCGRC-2021-017);农业农村部“甜菜种质资源的收集、鉴定、编目、繁种与入库保存”(2021年);黑龙江省普通本科高等学校青年创新人才培养计划“甜菜抗旱遗传资源评价及优异基因挖掘”(UNPYSCT-2020014)

The Whole Genome SSR Primers of Sugar Beet: Screening and Evaluation

LI Qiaoqiao1,2(), WANG Yuqing1,2, LIU Rui3, LIU Naixin1,2, PI Zhi1,2, WU Zedong1,2()   

  1. 1College of Modern Agriculture and Eco-Environment, Heilongjiang University, Harbin 150080
    2Key Laboratory of Beet Genetics and Breeding in Heilongjiang Universities/Heilongjiang University, Harbin 150080
    3Heilongjiang Seed Industry Technical Service Centre, Harbin 150008
  • Received:2021-07-29 Revised:2021-11-05 Online:2022-04-25 Published:2022-05-18
  • Contact: WU Zedong

摘要:

旨在筛选出适合于甜菜分子生物学实验的SSR核心引物,为后续构建甜菜指纹图谱及遗传多样性分析奠定重要基础。本文利用4种不同的甜菜种质资源和4个不同的甜菜品种,对基于甜菜全基因组编码区序列设计的247对SSR引物进行了初步筛选。结果表明,247对引物中绝大多数引物没有多态性或者多态性不好,只有27对引物具有较高的多态性,这27对引物总共扩增出103条带,其中多态性条带95条,多态性比率为90.43%。这些引物多态性信息量(PIC)范围为0.549~0.983,平均每一对引物的PIC值为0.841。试验结果表明虽然经过了电子PCR的筛选,想要找到合适的甜菜SSR引物依然比较困难,说明甜菜的遗传基础比较狭窄。这27对SSR引物适用于甜菜分子标记,为甜菜品种标准化鉴定体系的大规模构建和应用奠定了重要基础。

关键词: 甜菜, 分子标记, 简单序列重复, 引物筛选, 多态性信息含量

Abstract:

The aim is to screen out SSR core primers suitable for sugar beet molecular biology experiments, and lay a foundation for subsequent construction of sugar beet fingerprint maps and genetic diversity analysis. In this paper, four different sugar beet germplasm resources and four different sugar beet varieties were used for the preliminary screening of 247 pairs of SSR primers designed based on the sequence of the whole genome coding region of sugar beet. The results showed that the majority of the 247 primer pairs had no polymorphism or poor polymorphism, while only 27 primer pairs had high polymorphism. These 27 primer pairs amplified a total of 103 bands, including 95 polymorphic bands, with a polymorphism ratio of 90.43%. The polymorphism information content (PIC) of these primers ranged from 0.549 to 0.983, with an average PIC value of 0.841 for each primer pair. The results of the experiment showed that despite the screening by e-PCR, it was still difficult to find suitable SSR primers for sugar beet, indicating that the genetic base of sugar beet was relatively narrow. These 27 pairs of SSR primers are suitable for sugar beet molecular marking, and could be a foundation for large-scale construction and application of the standardized identification system for sugar beet varieties.

Key words: sugar beet, molecular marker, simple sequence repeat, primer screening, polymorphism information content

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