biostudies-literatureUnknown11(20)Hu XSCrop resistance and biological control are both considered efficient and environmentally friendly methods of sustainable pest control. In this study, we aimed at investigating the direct influence of four wheat lines with varying resistance level on the life-history traits of the greenbug, <i>Schizaphis graminum</i>, and the mediational effect on the functional response of a predatory ladybird, <i>Propylaea japonica</i>, under laboratory conditions. Results showed that the aphid fitness was the lowest for aphids that had been feeding on wheat line '98-10-19' for one year. These aphids had the longest development time, and least adult mass, minimal mean relative growth rate, and lowest reproductive fitness. In contrast, the aphids that fed on wheat line '98-10-30' were the fittest, with thePlants (Basel, Switzerland)2754https://www.ebi.ac.uk/biostudies/studies/S-EPMC9611035biostudies-literatureEffects of Crop Resistance on the Tritrophic Interactions between Wheat Lines, <i>Schizaphis graminum</i> (Hemitera: Aphididae), and <i>Propylaea japonica</i> (Coleoptera: Coccinellidae).PMC9611035Liu TXHu XSZhou ZFYan FYZhang ZFPeng JFZhao HYFeng YWang HLi JWfalseEffects of Crop Resistance on the Tritrophic Interactions between Wheat Lines, <i>Schizaphis graminum</i> (Hemitera: Aphididae), and <i>Propylaea japonica</i> (Coleoptera: Coccinellidae).Crop resistance and biological control are both considered efficient and environmentally friendly methods of sustainable pest control. In this study, we aimed at investigating the direct influence of four wheat lines with varying resistance level on the life-history traits of the greenbug, <i>Schizaphis graminum</i>, and the mediational effect on the functional response of a predatory ladybird, <i>Propylaea japonica</i>, under laboratory conditions. Results showed that the aphid fitness was the lowest for aphids that had been feeding on wheat line '98-10-19' for one year. These aphids had the longest development time, and least adult mass, minimal mean relative growth rate, and lowest reproductive fitness. In contrast, the aphids that fed on wheat line '98-10-30' were the fittest, with the2022-01-01T00:00:00Z2022 Oct2025-04-18T21:22:27.901Z2024-12-03T15:39:05.862ZS-EPMC96110353629777810.3390/plants11202754