Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2022, Vol. 38 ›› Issue (12): 95-99.doi: 10.11924/j.issn.1000-6850.casb2021-0726

Special Issue: 生物技术

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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 E-mail:18234660359@163.com;1997009@hlju.edu.cn

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

CLC Number: