Rust reactions of wheat lines developed by another culture

Akan


Central Research Institute for Field Crops, Turkey



Turkey is an important producer of bread wheat. Fungal diseases, including the rusts, limit production. Resistant varieties are the main strategy for rust control. In this study 33 doubled haploid lines developed by anther culture and 9 standard cultivars were evaluated for seedling (YR, LR, and SR) and adult plant reactions (YR) to rusts at the Central Research Institute for Field Crops at Yenimahalle and Ikızce in 2014. For adult plant reactions the genotypes were inoculated with local Pst populations (virulent on differentials with Yr2 Yr6, Yr7, Yr8, Yr9, Yr25, Yr27, YrSd, YrSu, and YrA). Stripe rust development on each entry was scored on the modified Cobb scale when the susceptible check Little Club reached 80S disease severity in June 2014. Coefficients of infection below 20 were considered to be resistant. Seedlings were inoculated with local Pgt (avirulent on differentials with Sr24, Sr26, Sr27 and Sr31), Pt (avirulent on differentials with Lr9, Lr19, Lr24 and Lr28) and the Pst population. Seedling reactions were recorded 14 days post inoculation on either 0-4 (SR and LR) or 0-9 (YR) scales. Thirteen (33%), 2 (5%) and 9 (23%) genotypes were resistant to SR, LR and YR, respectively. Fifteen (38%) genotypes were resistant to stripe rust at the adult stage.