Abstract
A genetic linkage map has been developed for recombinant inbred lines (RILs) of the cross 'Arta' × Hordeum spontaneum 41-1. One hundred and ninety four RILs, randomly chosen from a population of 494 RILs, were mapped with 189 markers including one morphological trait (btr = brittle rachis locus). The linkage map extended to 890 cM. Agronomic traits such as grain yield, biological yield, days to heading, plant height, cold tolerance and others were evaluated at the ICARDA research stations Tel Hadya and Breda during the years 1996–97 and 1997–98. QTLs for agronomic traits related to drought resistance were localized. For the most-important character 'plant height under drought stress', QTLs on 2H, 3H and 7H were detected. The 'plant height' QTLs, specially the one on 3H, showed pleiotropic effects on traits such as days to heading, grain yield and biological yield. QTLs were also identified for other traits associated with adaptation to the Mediterranean environment such as cold tolerance, days to heading and tiller number. The identification of QTLs for agronomic traits is a first step to analyze and to dissect complex characters such as adaptation to drought tolerance.

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Acknowledgements
This research was funded by BMZ grant 96.7860.8-001.00, by a grant of the Arab Fund for Economic and Social Development, and by the grant of the Danish Research Council for Developmental Research (Proj.-No. 90978). We are grateful to Dr. W. Powell, SCRI, for providing barley microsatellite primer sequences prior to publication.
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Baum, M., Grando, S., Backes, G. et al. QTLs for agronomic traits in the Mediterranean environment identified in recombinant inbred lines of the cross 'Arta' × H. spontaneum 41-1. Theor Appl Genet 107, 1215–1225 (2003). https://doi.org/10.1007/s00122-003-1357-2
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DOI: https://doi.org/10.1007/s00122-003-1357-2