Managing insect virulence can extend the durability of host‐plant resistant crops. Genetically modified resistant crops continue to be successful because of insect‐resistant management strategies that delay resistance such as multiple toxins and a susceptible refuge. These strategies may also be useful for host‐plant resistant crops, but more research is needed on their applicability. We investigated the interaction between a susceptible refuge and an insecticidal seed treatment to manage virulence in the soybean aphid. We tested four scenarios of an insecticidal seed treatment (plus an untreated control) in a microcosm containing 25% aphid‐susceptible (refuge) and 75% aphid‐resistant soybeans. Independent cohorts of plants were infested every week with avirulent and virulent aphids at equal frequencies. We used a molecular marker to estimate the change in virulence frequency across different plant maturities (from 7 to 42 days after planting).

中文翻译：

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评估杀虫种子处理和避难所对控制大豆蚜虫毒力的作用

控制昆虫的毒性可以延长抗寄主植物的寿命。由于抗虫管理策略会延迟抗药性，例如多种毒素和易感的避难所，因此转基因抗药性作物继续获得成功。这些策略可能对寄主植物具有抗性，但对它们的适用性还需要更多的研究。我们调查了易感的避难所和杀虫种子处理之间的相互作用，以处理大豆蚜虫中的毒力。我们在包含25％易感蚜虫（避难所）和75％抗蚜虫大豆的缩影中测试了四种杀虫种子处理方案（加上未处理的对照）。每周用相同频率的无毒和有毒蚜虫侵染独立的植物群。