Biotechnology Bulletin ›› 2024, Vol. 40 ›› Issue (2): 120-129.doi: 10.13560/j.cnki.biotech.bull.1985.2023-0697

Previous Articles     Next Articles

Identification of SSR Loci and Development of Polymorphic Markers in Whole Genome of Oat

CHEN Kai-ling1(), WU Tao1,2, XU Yi-qun1,2, GAO Jia1,2, ZHANG Mei-jun1,2, LI Xin1(), JIA Ju-qing1,2()   

  1. 1. College of Agriculture, Shanxi Agricultural University, Taigu 030801
    2. Shanxi Agricultural University, National Laboratory of Minor Crops Germplasm Innovation and Molecular Breeding(in preparation), Taiyuan 030031
  • Received:2023-07-18 Online:2024-02-26 Published:2024-03-13
  • Contact: LI Xin, JIA Ju-qing E-mail:ckl1228@qq.com;lixin@sxau.edu.cn;jiajuqing@sxau.edu.cn

Abstract:

【Objective】 Due to the limited number of SSR markers developed in oat, it is difficult to meet the needs of functional gene mapping and polymorphism marker development in oat.【Method】 Using the published reference genome, the SSR loci of the whole oat genome were retrieved by TBtools software, and their distribution characteristics were analyzed by Excel and SPSS software.【Result】 The SSR was abundant and varied in oat genome. A total of 828 138 SSR loci were identified in the whole genome, with an average density of 78.16 SSR/Mb and an average distance of 12.90 kb. Single, double and trinucleotide repeat types were dominant. The repetitions of the primitives were mainly 5 and 6, and the A/T, AG/CT and AAC/GTT repetitions were the dominant primitives. The SSR loci of oat genome showed moderate polymorphism, with length ranging from 11 to 1 587 bp. Through the systematic identification and analysis of the whole oat gene SSR locus, 52 pairs of polymorphic primers were developed and validated in the test material.【Conclusion】 The development of SSR primers in the reference genome of “Sanfensan” naked oat is effective and feasible, and can be used for further experimental research.

Key words: oats, skin, SSR markers, primer development, polymorphism