tailieunhanh - Determination of Puccinia graminis f. sp. tritici races of wheat in Turkey

Stem rust, caused by the fungus Puccinia graminis f. sp. tritici (Pgt), is one of the most important diseases limiting wheat production in Turkey. Surveys were conducted in 2007 and 2008 in order to determine the races of the pathogen present in Turkey. | Z. MERT, A. KARAKAYA, F. DÜŞÜNCELİ, K. AKAN, L. ÇETİN Research Article Turk J Agric For 36 (2012) 107-120 © TÜBİTAK doi: Determination of Puccinia graminis f. sp. tritici races of wheat in Turkey Zafer MERT1, Aziz KARAKAYA2*, Fazıl DÜŞÜNCELİ1, Kadir AKAN1, Lütfi ÇETİN1 1 The Central Research Institute for Field Crops, Şehit Cem Ersever Cd., No. 9-11, Yenimahalle, Ankara - TURKEY 2 Ankara University, Faculty of Agriculture, Department of Plant Protection, 06110 Dışkapı, Ankara - TURKEY Received: Abstract: Stem rust, caused by the fungus Puccinia graminis f. sp. tritici (Pgt), is one of the most important diseases limiting wheat production in Turkey. Surveys were conducted in 2007 and 2008 in order to determine the races of the pathogen present in Turkey. In 2007, it was found that 91 (43%) out of 207 inspected wheat fields were infected with stem rust, and in 2008, it was found that 61 (25%) out of 242 inspected fields were infected. From these samples, 40 single pustule isolates were obtained. The North American differential set, which includes 20 genotypes with different resistance genes, was employed to identify the races present. Seedling tests were used for race analysis under greenhouse conditions. A total of 21 different stem rust races were found. Pgt race TKTTC, which was found in 11 Pgt isolates, was the most common race. Genotypes possessing at least 1 of the Sr24, Sr31, Sr26, and Sr27 resistance genes showed low infection types for 40 Pgt isolates. The resistance genes determined in this study could be used in breeding programs for developing stem rust-resistant genotypes. Key words: Pathogen races, Puccinia graminis f. sp. tritici, resistance genes, wheat stem rust, Turkey Türkiye’de buğdayda hastalık oluşturan Puccinia graminis f. sp. tritici ırklarının belirlenmesi Özet: Buğdayda Puccinia graminis f. sp. tritici (Pgt) fungusu tarafından meydana getirilen kara pas hastalığı üretimi sınırlayan en önemli .

• Nông nghiệp
• Pathogen races
• Puccinia graminis f
• sp
• tritici
• Resistance genes
• Wheat stem rust
• Rust resistant genotypes