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 tropical japonica-based rice recombinant inbred line (RIL) mapping population has been used to identify genomic regions associated with resistance to sheath blight (caused by Rhizoctonia solani) and rice blast (caused by Magnaporthe oryzae). The Lemont × Jasmine 85 mapping population, also referred to as SB5 (Reg. No. MP-7, NSL 506950), was developed under the Rice Coordinated Agricultural Project (RiceCAP) and released on 31 Aug. 2009 by the USDA–ARS and University of Arkansas, Division of Agriculture. The mapping population has 572 F2:8 RILs, 256 of which were used to construct a linkage map using simple sequence repeat markers to identify quantitative trait loci for sheath blight and blast resistance. 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.
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