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This research aims to identify genes responsible for bruchid resistance in adzuki bean using rice bean genetic resources.

March 29, 2026ACTA AGRONOMICA SINICAOpen Access

QTL mapping for bruchid resistance in an adzuki bean distant hybridization population using rice bean genetic resources

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Identifies QTLs for bruchid resistance in adzuki bean, suggesting rice bean can enhance breeding efforts.

This research aims to identify genes responsible for bruchid resistance in adzuki bean using rice bean genetic resources.
Developed a distant hybridization population using rice bean and adzuki bean.
Generated an interspecific hybrid population and established a recombinant inbred line (RIL) population of 178 F8 lines.
Constructed a genetic linkage map with 3095 SSR markers to identify polymorphic loci and evaluated bruchid resistance using artificial infestation.
Identified nine QTLs associated with resistance to Callosobruchus chinensis, including three stable QTLs.
Confirmed that the adzuki bean cultivar Baihong 2 exhibits high susceptibility with 100% seed damage.
Rice bean accession F021 showed 19.2% and 23.4% seed damage in consecutive years, indicating significant resistance.

LIU et al. (2025) studied this question.

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