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<p>Emmer wheat <i>Triticum dicoccum</i> Schrank ex Schübl. is among the oldest domesticated cereals. It is classified into four subspecies, each showing characteristic morpho-ecological features and geographic distribution. We used SSAP (sequence-specific amplification polymorphism) method to analyze representative set of 95 genotypes representing 81 emmer accessions studied previously by C-banding that originated from various world regions to uncover their phylogenetic relationships. The results of SSAP and C-banding analyses were fully consistent. Gene pool of emmer split into two main classes, Oriental (1) and Occidental (2) that are further subdivided into clusters: (1) Volga-Balkan and Transcaucasian, (2) Central European, South European and Ethiopian. The T7A:5B translocation was found to be one of the markers that discriminates the Southern and Central European genetic clusters. It has been shown that intraspecific diversity revealed by SSAP and C-banding markers does not always agree with taxonomic classification based on ecological and morphological characteristics. Considering the geographic ranges of different genetic groups, taken together with historical and archeological data, we proposed the routes of <i>T. dicoccum</i> spreading from centers of diversity to various regions of the world. Our results could be used for constructing tetraploid wheat phylogeny, investigating its origin and domestication history, and for emmer breeding programs.</p>

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Assessment of genetic diversity of tetraploid wheat Triticum dicoccum Schrank ex Schübl. based on long terminal repeat (LTR) retrotransposon integration sites and C-banding analysis

  • 期刊论文

  • 发表日期：

    2025年6月5日

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  • Alexandra Yu. Novoselskaya-Dragovich,
  • Andrew V. Fisenko,
  • Fedor A. Konovalov,
  • Olga A. Lyapunova,
  • Alexander M. Kudryavtsev,
  • Ekaterina D. Badaeva,
  • Nikolay P. Goncharov

摘要

Emmer wheat Triticum dicoccum Schrank ex Schübl. is among the oldest domesticated cereals. It is classified into four subspecies, each showing characteristic morpho-ecological features and geographic distribution. We used SSAP (sequence-specific amplification polymorphism) method to analyze representative set of 95 genotypes representing 81 emmer accessions studied previously by C-banding that originated from various world regions to uncover their phylogenetic relationships. The results of SSAP and C-banding analyses were fully consistent. Gene pool of emmer split into two main classes, Oriental (1) and Occidental (2) that are further subdivided into clusters: (1) Volga-Balkan and Transcaucasian, (2) Central European, South European and Ethiopian. The T7A:5B translocation was found to be one of the markers that discriminates the Southern and Central European genetic clusters. It has been shown that intraspecific diversity revealed by SSAP and C-banding markers does not always agree with taxonomic classification based on ecological and morphological characteristics. Considering the geographic ranges of different genetic groups, taken together with historical and archeological data, we proposed the routes of T. dicoccum spreading from centers of diversity to various regions of the world. Our results could be used for constructing tetraploid wheat phylogeny, investigating its origin and domestication history, and for emmer breeding programs.