Abstract
Pyrenophora teres f. maculata incites spot form of barley net blotch disease. For determination of Pyrenophora teres f. maculata pathotypes, a differential set consisted of 22 international cultivars and genotypes and a susceptible Turkish barley variety Bülbül 89 were tested using 45 isolates obtained from different regions of Turkey. Nineteen pathotypes were determined out of 45 isolates used. It appears that this differential set could be useful for determination of P. teres f. maculata pathotypes.
Highlights
Barley net blotch disease caused by the fungus Pyrenophora teres is a common and important disease which lowers the yield and quality of the barley in the world (Mathre 1982; McLean et al 2009; Karakaya et al 2014)
Between 2015-2017 surveys were conducted in various provinces of Turkey and 1, 6, 5, 3, 1, 6, 2, 5, 2, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1 and 1 P. teres f. maculata samples were obtained from Niğde, Diyarbakır, Ankara, Eskişehir, Adıyaman, Konya, Kırşehir, Şanlıurfa, Kayseri, Afyonkarahisar, Kahramanmaraş, Kırıkkale, Aksaray, Çankırı, Sivas, Yozgat, Mardin, Kilis, Edirne and Gaziantep provinces of Turkey, respectively
Nineteen pathotypes were determined using 45 Pyrenophora teres f. maculata (Ptm) isolates based on their differential reactions to 23 barley genotypes (Tables 1 and 2)
Summary
Barley net blotch disease caused by the fungus Pyrenophora teres (anamorph: Drechslera teres) is a common and important disease which lowers the yield and quality of the barley in the world (Mathre 1982; McLean et al 2009; Karakaya et al 2014). Teres incite spot and net forms of net blotch disease, respectively (Liu et al 2011). Resistant cultivars are preferred in disease control. Pathotypes of the fungus complicate the resistance studies. In order to control the pathogen, information about the pathotypes of the fungus is necessary. Different researchers used different cultivars and genotypes. This study aimed at contributing to development of an international set for determination of Pyrenophora teres f. This study aimed at contributing to development of an international set for determination of Pyrenophora teres f. maculata (Ptm) pathotypes
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