Development of 12 sets of chromosome segment substitution lines that enhance allele mining in Asian cultivated rice

Many agronomic traits that are important in rice breeding controlled by multiple genes. The extensive time and effort devoted so far to identifying selecting such genes still not enough target practical Japan because of a lack suitable plant materials which efficiently detect validate beneficial alleles from diverse genetic resources. To facilitate the comprehensive analysis variation among Asian cultivated rice, we developed 12 sets chromosome segment substitution lines (CSSLs) with japonica background, 11 them same using donors representing diversity rice. Using these materials, overviewed chromosomal locations 1079 putative QTLs for seven their allelic distribution through linear regression analysis. CSSLs will allow effects highly homogeneous background be validated.