Allelopathic Effects of Wild Barley (Hordeum spontaneum Koch) Extracts on Growth of Five Wheat (Triticum aestivum L.) Cultivars

D. Hamidi, H. Ghadiri, M. j. Bahrani, A. Moradshahi, Reza Hamidi


Greenhouse studies were conducted to examine the effects of wild barley shoot and root extracts on five wheat cultivars including Shiraz, Chamran, Darab-2, Cross-Azadi, and Falat growth. After 12 weeks, plants were harvested and leaf area, dry weight, and stem length were determined. Shoot extracts significantly reduced dry weight in Darab-2 and Cross-Azadi cultivars. Plant height was significantly reduced at shoot extract concentrations of 6 and 9 g/L  in Chamran and Cross-Azadi cultivars. All concentrations of root extract significantly reduced leaf area in Falat cultivar. Most severe inhibitory effects of root extract on dry weight and plant height were observed in Cross-Azadi and Falat cultivars, respectively. The results showed that wild barley has allelopathic potential to reduce wheat growth and that wild barley shoot extract exerted more allelopathic effects on wheat growth than that of root.


Inhibitory Effects, Allelopathy, Hordeum Spontaneum, Shoot and Root Extracts, Growth Traits, Wild Barley.


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