Abstract
Barley (Hordeum vulgare L.) is a major field crop grown worldwide. Field research was undertaken at ICARDA’s (International Center for Agriculture Research in Dry Area) main station in Northwest Syria to evaluate barley doubled haploid (DH) and mutants lines for agronomic traits (grain yield, plant height and days to heading) and resistance to scald (Rhynchosporium secalis) under natural infection conditions for two consecutive years. Significant differences were found among lines in the percentage of infected leaf area. However, they exhibited a continuous range of response from very susceptible to resistant. Seven lines had significantly lower percentage of infected leaf area with disease than did the other lines, which are associated with potential for grain yield and earliness. These lines could be considered as possible donors in further barley breeding programs.
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