Table · dataset · 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>
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<p dir="ltr">Soil salinization is expanding in major rice-growing regions, yet its multigenerational effects on planthoppers via host plants remain unclear.
Description
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.
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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>
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- DOI doi.org/10.6084/m9.figshare.33869011.v3 ↗
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