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     In this study, 72 barley double haploid lines with two parents were studied. The experiment was arranged in a completely randomized block design with two replicates and two conditions, normal and boron stress in hydroponic condition at University of Zabol in 2013. Some of these traits measured in this experiment include e: Fresh and dry weight of root and shoot and their ratio, length of root and shoot and their ratio, length of the largest leaf and length of total plant. After measuring traits, statistical analysis achieved for phenotypic surveys such as analysis of variance, mean comparison and correlation between traits were calculated. These results showed meaningful difference among the lines in most of those traits. Maximum correlation was seen between length of root and length of total plant (0/934,0/925). QTL analysis was carried out using genetic linkage map derived 327 molecular marker of AFLP and using QTL cartographer software with composite interval mapping method. In general 29 QTL for studied traits were found (17 QTL for normal condition and 12 QTL for born stress condition) that their explained phonotypical variance was vitiated between 10-27/56 percent. The highest and lowest phonotypical variances were related to root and shoot length ratio in born stress condition. LOD ranged between 2/50-4/32. The highest and lowest LOD were attained for the QTLs of root and shoot length ratio and leaf length, respectively. In this study, only one QTL was placed in the similar place and was stable (leaf length, 3H). Therefore, it can be used in marker assisted selection.


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