Grown in Crowley, LA, in 2004, the 325-line doubled haploid mapping population is from the cross between sheath blight susceptible cultivar Cocodrie and MCR01-0277 which has a high level of partial resistance to sheath blight. Specific agronomic data, including seedling vigor and sheath blight rating, on each line are available at the Rice Genetic Stock Center web site, in the Collection Catalog.