The shoot traits related drought tolerance is an
important for understanding drought tolerance mechanisms
of the whole plant. The current research was curried out to
identify the QTLs associated with shoot traits related to
drought tolerance in a structured barley population grown
under well-watered and drought stress conditions during the
summer seasons of 2007-08., Marker data collected from all
accessions were used to establish population structure and
kinship relationships. Mixed liner model (MIL) analysis,
which include population structure and kinship used to
discover marker-trait associations. 56 QTLs have been
identified for the shoot traits, and located on the whole barley
genome, these QTLs had main and/or interaction effects on
improving or reducing the traits of interest under wellwatered
and drought stress conditions, a total of 8, 16, 8, 8, 9,
5 and 5 QTLs were detected for wilting score (WS), no. of
tillers/plant (TILS), shoot fresh weight/plant (SFW), Shoot
dry weight/plant (SDW), Relative content (RWC), Proline
content (PC) and Osmotic potential (OP) respectively. Six colocations
of QTLs were correlated with all studied traits and
covered the whole genome of Barley population of interest.