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May 9, 2026AgronomyOpen Access

Multi-Environment Genome-Wide Association Analysis Reveals Stable Genetic Loci for Soybean Yield Component Traits

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Randomized trial uncovers stable genetic loci for soybean yield traits, suggesting new avenues for molecular breeding.

The research aims to identify stable genetic loci for soybean yield component traits across various environments.
Conducted multi-environment phenotyping over three years and six locations using 320 soybean accessions.
Employed the Best Linear Unbiased Prediction model to integrate phenotypic data and quantify genotype-by-environment interactions.
Performed genome-wide association studies using BLUP values with the Mixed Linear Model to identify significant SNP loci.
Identified 22 significant SNP loci associated with soybean traits: 10 for main stem node number, 7 for lowest pod height, and 5 for branch number.
Loci clustered primarily on chromosomes 19, 8, and 18, representing stable signals across multiple environments.
Predicted eight high-confidence candidate genes connected to cell wall biosynthesis, energy metabolism, and stress response.

Du et al. (2026) studied this question.

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