The reactions of bread wheat lines against stem (black) rust (Puccinia graminis F. Sp. tritici) population

Abstract

Quality parameter is very important selection for bread wheat improve programme. Yield trials were evaluated in terms of some physical characteristics, the amount of protein, its quality and some gluten rheological parameters. Stem rust (Puccinia graminis f. sp. tritici, (Pgt) can occur at higher altitudes and coastal areas in Turkey. On the other hand, stem rust is unfavorable for wheat quality to susceptible cultivars. 26 bread wheat genotypes (mixographe class; 3-6, (Bezostaja-1; 5) in yield trials were developed by the Central Research Institute for Field Crops (CRIFC) Department of Quality Assessment and Food. The aim of this study was to determine the reactions of 26 winter bread wheat lines to stem rust disease in adult plant stage. The test materials were sown in a one-meter row with 2 replications in Seydiler, Kastamonu Province. The test materials were screened under natural epidemic condition with Pgt (virulent on: Sr5, 6, 7b, 8a, 8b, 9b, 9g, 10, 30, Tmp and Mcn resistance genes). Stem rust developments on each entry were scored using the modified Cobb scale (Susceptible control cv. Little Club 80-100S) in June-August 2015. Coefficients of infections were calculated, and the values below 20 were considered as resistant to disease. Five (14%) genotypes were resistant to Pgt. These resistance genotypes can be used in both quality and stem rust resistance breeding programs to stem rust reactions.