Türkiye’nin bazı bölgelerinde Rhynchosporium commune (Zaffarona, McDonald & Linde)’nin patotiplerinin belirlenmesi

Barley (Hordeum vulgare L.) is one of the important cereal crops grown in the vast area of the world and Turkey. This crop is the second most important cereal in Turkey grown in 2.611.940 hectares of land, and 7.000.000 tonnes of yield was produced (TUIK 2018). Barley scald caused by Rhynchosporium commune Zaffarano, McDonald, and Linde (formerly Rhynchosporium secalis (Oudem.) J.J. Davis) (Zaffarano et al. 2011) is one of the important barley diseases in Turkey (Karakaya et al. 2014). Yield losses of 10%-70% due to this pathogen have been reported (Aktas 1984, Sheikh Jabbari 2008, Shipton et al. 1974, Zhang et al. 1992). Barley scald is controlled using chemical, agronomical, and genetic resistance measures. Introducing new sources of resistance to scald is accomplished by screening barley genotypes as well as determining the degree of pathogenic variation in R. commune populations. This method may omit the control of this fungus by chemical measures and help to implement environmentally friendly ways of disease control. Knowing pathogenic variability and obtaining barley genotypes resistant to scald can lead to the prevention of disease losses. In this study, surveys were conducted during 2012, 2013, and 2014 in different regions of Turkey, and pathotypes of R. commune in some barley growing areas of Turkey were determined.