Registration of a recombinant inbred line population from a cross of weedy and cultivated rice
South Dakota State University
Partner institutions
South Dakota State University
Brookings, SD, USA
A public land-grant research university in Brookings, South Dakota, home to a major wheat breeding and genetics program.
How Vibe analyzers were used
A Vibe QM3i grain analyzer measured filled-spikelet length and width across a 396-line recombinant inbred population from a cross between weedy red rice and a cultivated breeding line, supporting a high-resolution linkage map and germplasm resource for studying weedy-rice trait genetics.
Study overview
This registration describes 396 recombinant inbred lines (RILs) developed from a cross between weedy red rice and a cultivated rice breeding line, advanced through the F12 generation. The lines were evaluated for wild-like traits (seed dormancy, pigmentation, and appendages) and crop-mimic traits, including filled-spikelet length and width measured with a Vibe QM3i grain analyzer. A subset of 250 lines was genotyped with 7,098 SNP markers, producing a high-resolution linkage map (1,259 cM) spanning all 12 chromosomes, with 20.2% parental polymorphism and 96.9% mean RIL purity. The population identifies recombination hot and cold spots useful for QTL mapping and for studying the evolutionary genetics of weedy rice, and materials are held at the USDA-ARS Dale Bumpers National Rice Research Center.
Topics and keywords
Related crop analysis
Bibliographic details
Year: 2026
Publication: Journal of Plant Registrations
DOI: 10.1002/plr2.70051
Institutions: South Dakota State University
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