QTL mapping for yield and yield components in Hordeum vulgare

yield and most morphological traits are controlled by the numerous of genes. In order to QTL mapping for yield and yield components traits, 169 barley recombinant inbred lines (F6 generation) and their parents “Igre” and “Arigashar”, were planted in a simple lattice design with two replications in Ghezlagh (research farm of Abouraihan college, Tehran University in 2007. The traits evaluated including: number of speckle, 1000-seed weight and yield. Analysis of variation showed that there was sufficient variation among the entries. Among traits in this study, the 1000 grain weight with the highest heritability is controlled mainly by additive effects. AFLP and SSR markers were used for preparing linkage map and 4 chromosomes of barley were mapped. Two QTLs identified for each trait on the number of 2 and 5 linkage maps. in and 5 linkage groups. Allelic effects (additive) justified the positive and negative correlation among traits. Pleiotropy of QTLs or linkage between them might lead to high correlation.