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Related Experiment Videos

Wheat protein.

V A Johnson

    Basic Life Sciences
    |March 1, 1976
    PubMed
    Summary
    This summary is machine-generated.

    Researchers found significant genetic variation for wheat protein content, enabling selection of higher-protein lines. Increasing wheat protein can also boost lysine content, improving nutritional quality.

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    Area of Science:

    • Agricultural Science
    • Plant Genetics
    • Nutritional Science

    Background:

    • Substantial genetic variation for grain protein content in wheat has been identified.
    • Improving wheat's nutritional quality is a key agricultural goal.
    • Previous research indicated limited genetic variability for lysine in wheat grain.

    Purpose of the Study:

    • To investigate genetic variation for protein and lysine content in wheat.
    • To determine the relationship between protein and lysine content.
    • To identify strategies for enhancing wheat's nutritional value.

    Main Methods:

    • Selection of experimental wheat lines from high-protein and high-lysine crosses.
    • Analysis of genetic variability in lysine content within the USDA World Wheat Collection.

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  • Seed fractionation studies to locate protein and lysine concentrations.
  • Correlation analysis between protein and lysine content.

    • Main Results:

    • Experimental lines with 5% higher grain protein content were selected.
    • Limited genetic component (0.5%) found for total lysine variability in a large wheat collection.
    • Genetic increases in lysine (0.4-0.7%) identified in high-lysine selections.
    • Positive correlation between protein content and lysine per unit grain weight.
    • High protein primarily due to increased starchy endosperm protein content.
    • Lysine differences found in both endosperm and non-endosperm fractions.
    • A high-protein wheat variety with 2% higher potential grain protein was released in 1975.

    Conclusions:

    • Substantial genetic variation exists for improving wheat grain protein content.
    • Increasing wheat protein content is an effective strategy to enhance lysine levels in grain.
    • Further research can leverage genetic resources to develop nutritionally superior wheat varieties.