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Related Experiment Video

Updated: Jul 17, 2026

Metabolomic Analysis of Barley by Gas Chromatography/Mass Spectrometry
08:15

Metabolomic Analysis of Barley by Gas Chromatography/Mass Spectrometry

Published on: November 8, 2024

Analysis of complex allozyme polymorphisms in a barley population.

B S Weir1, R W Allard, A L Kahler

  • 1University of California, Davis, California 95616.

Genetics
|November 1, 1972
PubMed
Summary

Genetic analysis of barley esterase loci revealed significant changes in gametic frequencies and rapid development of disequilibrium over generations. These complex genetic dynamics are linked to selection, linkage, and inbreeding effects.

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Area of Science:

  • Population Genetics
  • Molecular Genetics
  • Agricultural Science

Background:

  • Understanding genetic variation in crop populations is crucial for breeding.
  • Esterase loci in barley (Hordeum vulgare) are important markers for genetic studies.

Purpose of the Study:

  • To investigate changes in allele and gametic frequencies at four esterase loci over multiple generations in an experimental barley population.
  • To identify the genetic factors contributing to observed changes in genotype frequencies.

Main Methods:

  • Genotyping of 68,230 barley individuals across 10 generations (F4-F6, F14-F17, F24-F26).
  • Analysis of allele frequencies and gametic phase disequilibrium for six pairwise combinations of four esterase loci.

Main Results:

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Measuring Gene Expression in Bombarded Barley Aleurone Layers with Increased Throughput
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Measuring Gene Expression in Bombarded Barley Aleurone Layers with Increased Throughput

Published on: March 30, 2018

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Last Updated: Jul 17, 2026

Metabolomic Analysis of Barley by Gas Chromatography/Mass Spectrometry
08:15

Metabolomic Analysis of Barley by Gas Chromatography/Mass Spectrometry

Published on: November 8, 2024

Measuring Gene Expression in Bombarded Barley Aleurone Layers with Increased Throughput
10:29

Measuring Gene Expression in Bombarded Barley Aleurone Layers with Increased Throughput

Published on: March 30, 2018

  • Significant changes in gametic ditype frequencies were observed across generations.
  • Rapid development of gametic phase disequilibrium was detected for all six pairwise locus combinations.
  • Observed genetic dynamics suggest complex interactions influencing locus behavior.

Conclusions:

  • The study attributes the complex genetic behavior of esterase loci to the interplay of selection and restricted recombination.
  • Linkage and inbreeding are identified as key factors contributing to the observed genetic disequilibrium and frequency shifts in barley populations.