QTL analysis in multiple sorghum mapping populations facilitates dissection of the genetic control of agronomic and yield-related traits in sorghum [Sorghum bicolor (Moench)]

The genetic architectures of agronomic and yield-related traits are expected to involve multiple loci that unlikely all segregate for alternative alleles in a single biparental population. Therefore, the identification quantitative trait (QTL) expressed diverse backgrounds bi-parental populations provides evidence about both background-specific common variants. purpose this study was map QTLs yield related using three connected mapping different backgrounds, gain insight into genomic landscape these important elite Ethiopian sorghum germplasm. populations, each with 207 F 2:3 lines were evaluated an alpha lattice design two replications under moisture stress environments. Data analysis done separately population composite interval mapping, finding total 105 QTLs. All identified from individual projected on combined consensus map, comprising 25 meta seven traits. allowed us deduce locations larger number markers than possible any providing reference studies backgrounds. could be used marker-assisted breeding programs after validation. Only one trait, reduced leaf senescence, showed striking bias allele distribution, indicating substantial standing variation among might employed improving drought tolerance sorghum.