QTL analysis of some phenological and morphological traits in Babax and Seri M82 recombinant inbred line population of wheat during salinity stress

In order to mapping QTLs of 9 phenological and morphological traits of "Seri M82×Babax" drived recombinant inbred line population of wheat, an experiment was conducted in two alpha lattice with two replications under normal and salt stress conditions in 2012. Days to heading, days to anthesis, plant height (cm), spike number, grain number in spike, biological yield, thousand grain weight, harvest index and grain yield were measured. QTL analysis was conducted by composite interval mapping method separately for each trait in each condition and mean of two conditions. Based on combined analysis of variance, the main effect of genotype was high significant for all studied traits and transgressive segregation in both directions (positive and negative) was observed. Twenty seven QTLs were found for the studied traits. Phenotypic variation that were explained by these QTLs, varied from 5-16%. The highest and lowest phenotypic variations were related to days to anthesis and thousand grain weight. Highest and loest LOD scores were obtained for the QTLs of harvest index in mean of two conditions and thousand grain weight in salt condition. Most of mapped QTLs were unstuble. Therefore, use of MAS in this population for studied traits seen to be unefficient.