Resistance evaluation of oat genotypes to stem rust (Puccinia graminis f. sp. avenae)

<p>The resistance in seedling and adult plant of 13 varieties 37 lines oats against stem rust caused by <em>Puccinia graminis</em> f. sp. <em>avenae</em> was evaluated. TNQ TFQ races isolates AMEX18.21.1.1 AMEX18.18.1.1 for evaluation; isolate plants were used. The Diamante, Menonita, Karma Turquesa resistant to the race, but susceptible AMEX18.18.1.1, other two isolates. All seedling, these classified as susceptible, intermediate only Teporaca resistant. into 17 groups final severity sister lines. Genotypes 25, 28, 34, 39 48 rest susceptible. In field all genotype 19 group 14, reached a 20% infection. From its response seedlings advanced lines, it is inferred that conditioned genes.</p>