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Related Experiment Video

Updated: Mar 19, 2026

Imaging and Analysis for Quantifying Maize (Zea mays) Abiotic Stress Phenotypes

Imaging and Analysis for Quantifying Maize (Zea mays) Abiotic Stress Phenotypes

Published on: March 28, 2025

Association mapping for cold tolerance in two large maize inbred panels.

Pedro Revilla¹, Víctor Manuel Rodríguez², Amando Ordás²

¹Misión Biológica de Galicia, Spanish National Research Council (CSIC), PO Box 2836080, Pontevedra, Spain. previlla@mbg.csic.es.

BMC Plant Biology

|June 9, 2016

Summary

This study identified key genes for cold tolerance in maize using genome-wide association analyses (GWAS). These findings enable marker-assisted selection to improve maize production in cooler climates.

Keywords:

Chilling Cold tolerance GWAS, Maize QTL

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Area of Science:

Plant Breeding
Genetics
Agronomy

Background:

Breeding maize for cold tolerance can expand cultivation areas and boost production in temperate regions.
Understanding genetic factors for cold tolerance is crucial for developing resilient crop varieties.

Purpose of the Study:

To perform genome-wide association analyses (GWAS) in temperate maize inbred lines.
To identify strategies for pyramiding genes that confer cold tolerance.

Main Methods:

Evaluated two panels (dent and European flint) of maize inbred lines under cold and control conditions.
Utilized indirect cold tolerance traits: days to emergence, chlorophyll content, and photosystem II efficiency.
Employed genome-wide single nucleotide polymorphism (SNP) markers for association mapping.

Main Results:

Identified 275 significant genetic associations for cold tolerance traits.
Detected significant quantitative trait loci (QTL) in both dent and flint panels, with more found in the flint panel.
Pinpointed specific inbred lines carrying favorable alleles for multiple QTL, crucial for breeding efforts.

Conclusions:

The study provides a foundation for improving maize cold tolerance through genetic approaches.
Genome-wide selection and marker-assisted selection strategies can be employed for breeding cold-tolerant maize varieties.