Title: Registration of a rice gene mapping population of Lemont X Jasmine 85 recombinant inbred lines Authors
Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: July 22, 2014
Publication Date: N/A
Interpretive Summary: Sheath blight is one of the most damaging diseases in the southern US and worldwide. The disease is managed using fungicide and culture practices. Using genetic resistance would reduce fungicide use and will ultimately benefit environment. In this study, we developed a mapping population of 553 individuals derived from sheath blight resistant indicia cultivar ‘Jasmine 85’ crossed with US adapted tropical japonica cultivar ‘Lemont’. Jasmine 85 contains major sheath blight resistance genes, and Lemont is sheath blight susceptible. A subset of 256 individuals has been used to identify sheath blight resistance genes. We discovered this population is diverse in agronomical traits. We anticipate that this population will be beneficial for cultivar improvement and genetic studies of agronomical important traits.
Technical Abstract: A mapping population developed from a cross of rice (Oryza sativa L.) tropical japonica cultivar ‘Lemont’ and indica cultivar ‘Jasmine 85’ was developed to facilitate genetic studies for important agronomic traits. The indica- and japonica-based rice recombinant inbred line (RIL) mapping population has been used to identify genomic regions associated with resistance to sheath blight and rice blast diseases. The Lemont/Jasmine 85 mapping population (Reg. No. _______) was developed under the Rice Coordinated Agricultural Project (RiceCAP) and released on August 31, 2009 by USDA ARS and University of Arkansas, Division of Agriculture. The mapping population has 553 F2:8 RILs, 256 of which were used to construct a linkage map using simple sequence repeat (SSR) markers to identify sheath blight and blast resistance loci. This mapping population and related datasets represent a valuable resource for basic rice genomic research and applied marker-assisted breeding efforts in disease resistance and other agronomic traits.