2026-10-06T09:17:47Z https://api.figshare.com/v2/oai

oai:figshare.com:article/33869011 2026-09-21T04:52:32Z category_24127 category_23923 category_23941 item_type_3 month_year_09_2026

<b>Trait-specific </b><b>multigenerational </b><b>effects of salinity and rice variety on fitness traits of the white-backed planthoppe</b><b>r</b> 榕 马 (25000037) Other agricultural, veterinary and food sciences not elsewhere classified Agronomy Crop and pasture protection (incl. pests, diseases and weeds) salinity tolerance; Oryza sativa; multigenerational effect; wing dimorphism; varietal resistance <p dir="ltr">Soil salinization is expanding in major rice-growing regions, yet its multigenerational effects on planthoppers via host plants remain unclear. We investigated how rice variety, NaCl concentration, and generational exposure influenced the fitness of the white-backed planthopper (WBPH), Sogatella furcifera (Horváth). In a preliminary screening experiment, four rice cultivars were grown under 0–100 mmol/L NaCl, and six fitness-related traits were measured in the F1 generation. All the traits exhibited significant variety-by-concentration interactions.The fecundity of Yanfeng No. 47 remained stable (147.05 ± 7.47–188.29 ± 8.27 eggs/female) across the salinity gradient, whereas Liaoxing No. 1 strongly suppressed nymphal survival, which decreased to 40.00 ± 4.08% at 100 mmol/L. To test multigenerational effects, we further propagated WBPH on Liaoxing No. 1 under 100 mmol/L for three consecutive generations. multigenerational patterns were trait specific. Nymphal survival recovered from an initial F1 decrease of 40.00 ± 4.08% to 73.75 ± 2.39–76.25 ± 4.27% in F2–F3, whereas fecundity decreased at the same concentration (from 48.09 ± 3.81 to 15.59 ± 0.59–16.75 ± 0.66 eggs/female). Adult longevity remained variety dependent and stable across generations. The macropterous ratio showed a nonsignificant numerical peak in F2 (68.57%; p > 0.05). Overall, the effects of salt on the WBPH depended on the rice variety, salt concentration, and generation. These findings provide a basis for understanding WBPH population dynamics in saline rice fields and for developing management strategies in saline-alkaline agroecosystems.</p> 2026-09-21T04:52:32Z Dataset Dataset 10.6084/m9.figshare.33869011.v3 https://figshare.com/articles/dataset/_b_Trait-specific_b_b_multigenerational_b_b_effects_of_salinity_and_rice_variety_on_fitness_traits_of_the_white-backed_planthoppe_b_b_r_b_/33869011 CC BY 4.0