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N A Kozub, I A Sozinov, A V Karelov

    Tsitologiia I Genetika
    |November 29, 2018
    PubMed
    Summary
    This summary is machine-generated.

    This study analyzed Ukrainian winter wheat genetic diversity for storage proteins and disease resistance. Findings reveal distinct allele frequencies across regions, with new associations emerging in recent decades.

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    Area of Science:

    • Agricultural Science
    • Plant Genetics
    • Crop Breeding

    Background:

    • Understanding wheat genetic diversity is crucial for developing resilient crop varieties.
    • Storage protein and disease resistance genes significantly impact wheat quality and yield.
    • Regional adaptation of wheat varieties is influenced by specific genetic markers.

    Purpose of the Study:

    • To assess the genetic diversity of Ukrainian winter common wheat varieties.
    • To investigate the distribution and frequency of storage protein and disease resistance gene markers.
    • To identify regional allele patterns and their evolution in wheat breeding.

    Main Methods:

    • Analysis of storage protein loci (Gli-A1, Gli-B1, Gli-D1, Glu-A1, Glu-B1, Glu-D1, Gli-A3, Gli-B5, Gli-A6) in 362 varieties.

    Related Experiment Videos

  • Genotyping for disease resistance markers (Lr34/Yr18/Pm38/Sr57/Bdv1, Tsn1, Tsc2, TDF_076_2D) in 181 varieties.
  • Comparison of allele frequencies across different soil and climatic zones.

    • Main Results:

    • Significant differences in allele frequencies were observed between wheat varieties from different soil and climatic zones.
    • Predominant alleles specific to certain regions were maintained across different breeding periods.
    • New allele associations, such as Gli-A1g and Glu-B1al in the Steppe zone, and 1AL/1RS and Glu-B1d in the Central Forest-Steppe zone, were identified in recent decades.
    • Nonrandom associations were found between disease resistance gene alleles and between disease resistance and storage protein alleles.

    Conclusions:

    • Regional differentiation in wheat genetic makeup is evident, reflecting adaptation to local conditions.
    • Wheat breeding has successfully retained adaptive alleles while also introducing novel combinations.
    • Understanding these genetic associations can inform future breeding strategies for improved disease resistance and quality.