ArticleFrontiers in plant science2026
QTL-seq analysis of seed protein quantity and quality traits in two soybean recombinant inbred line populations.
Article in Frontiers in plant science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: Soybean [ Methods: Two recombinant inbred line (RIL) populations, POP179 and POP180, were derived from crosses between unique high-protein fast neutron-induced mutants. Phenotypic evaluations were conducted across four site-year environments in southern Ontario, Canada. A modified QTL-sequencing (QTL-seq) method was implemented to detect genomic regions with unequal parental contributions that likely harbour putative QTL. Results: All five seed traits exhibited high broad-sense heritability (0.81 to 0.90) and significant positive correlations. Three stable putative QTL were identified and validated on chromosomes 1 (27.1-32.3 Mbp), 2 (8.6-10.8 Mbp), and 15 (16.7-20.8 Mbp) in both populations. Discussion: The co-localization of genomic regions associated with multiple traits suggests a shared genetic architecture governing seed composition. Identified candidate genes, such as glutamine synthase and peptide transporters, are likely involved in nitrogen assimilation and nutrient loading during seed development. These findings provide additional resources for marker-assisted selection and genomic prediction that can support the development of soybean cultivars with superior nutritional profiles.
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