Akademik Veri Yönetim Sistemi
Journal of Crop Health, cilt.78, sa.3, 2026 (SCI-Expanded, Scopus)
This study examined how nine wheat cultivars (Glosa, Cömert 2, Bagira, Lucilla, Esperia, Alp 1, Pehlivan, Tosunbey, Hüseyinbey) affect the biological performance and population dynamics of Diuraphis noxia (Russian wheat aphid) (Hemiptera: Aphididae) using the age-stage, two-sex life table approach. The results showed that the pest’s developmental duration, survival patterns, reproductive traits, and population growth parameters differed significantly among host cultivars. Glosa and Cömert 2 were the most favourable hosts for D. noxia, with short pre-adult development, high daily and lifetime fecundity, extended adult longevity, and high intrinsic rates of increase (r). In contrast, Hüseyinbey, Tosunbey, Pehlivan, and Alp 1 were poorly suitable hosts, displaying prolonged development, reduced reproductive output, delayed onset of oviposition, and notably low values of r, λ, and R0. Analyses of age-specific survival (lx), age-stage life expectancy (exj), and reproductive value (vxj) revealed significant reductions in both survival probability and reproductive potential on the more resistant cultivars. In the population projection simulations, a cohort initiated with 10 nymphs expanded to several million individuals on Glosa by day 60, whereas on Hüseyinbey it reached only about 1900 aphids. These projections clearly demonstrate that host-plant resistance is a key factor limiting long-term population growth. The findings indicate that resistant wheat cultivars can be an effective means to reduce reliance on chemical insecticides in managing D. noxia. Overall, the results emphasise that incorporating resistant hosts into integrated pest management (IPM) programmes is essential for sustainable crop production and provides valuable groundwork for future breeding efforts.