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Updated: Dec 20, 2025

Semi-High Throughput Screening for Potential Drought-tolerance in Lettuce Lactuca sativa Germplasm Collections
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Drought resistance - is it really a complex trait?

Abraham Blum

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    Summary
    This summary is machine-generated.

    Drought resistance is not a complex trait, despite genomics research suggesting otherwise. Focusing on physiological and agronomic traits simplifies breeding and crop management for improved water use efficiency.

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    Area of Science:

    • Plant Science
    • Genetics
    • Agronomy

    Background:

    • Drought resistance is increasingly termed a 'complex trait' due to extensive genomic research identifying numerous responsive genes.
    • This label may hinder educational efforts, research progress, and practical solutions for farmers.

    Purpose of the Study:

    • To critically evaluate the grounds for labelling drought resistance as a complex trait.
    • To contrast the genomic perspective with physiological and agronomic viewpoints.

    Main Methods:

    • Review of current scientific literature and research platforms.
    • Comparative analysis of gene discovery versus whole-plant/crop perspectives on drought resistance.

    Main Results:

    • Genomic research identifies many drought-responsive genes, making gene function identification challenging and leading to the 'complex trait' label.
    • Physiological and agronomic perspectives reveal simpler control mechanisms for drought resistance, focusing on maintaining hydration and effective water use (EUW).

    Conclusions:

    • The complexity lies in the genomics approach, not in the trait itself.
    • Breeding and crop management can effectively utilize simpler, known drought resistance mechanisms, particularly those enhancing effective water use.