The importance of Spodoptera cosmioides (Lepidoptera: Noctuidae) in soybean crops has been growing, mainly with the cultivation of transgenic Bt plants. The objective of this study was to evaluate antixenosis to S. cosmioides in soybean plants with different leaf colors and trichome densities. Antioxenosis was evaluated by non-preference for feeding and oviposition assays. The study was performed in no-choice and free-choice tests using the genotypes Anta 82, BMX Desafio, BMX Potência, BRS 397, BRS GO 6970 IPRO, BRS 7270 IPRO, BRS 7470 IPRO, BRS 8170 IPRO, BRS 8482, BRS GO 7460, BRS GO Jataí, IAC 100, M 7739 IPRO, NA 5909, NS 7338 IPRO, NS 7447 IPRO, PI 227682 and PI 227687. The genotypes IAC 100, PI 227682 and PI 227687 showed antixenosis to S. cosmioides mediated by leaf color and trichome density. These genotypes could be appropriate for breeding programs aiming to incorporate sources of resistance to S. cosmioides. The cultivar M 7739 IPRO can be used by soybean producers as a control strategy for S. cosmioides due to moderate resistance.

中文翻译：

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由叶色和毛状体密度介导的大豆对 Spodoptera cosmioides (Lepidoptera: Noctuidae) 的抗排毒作用

Spodoptera cosmioides (Lepidoptera: Noctuidae) 在大豆作物中的重要性一直在增长，主要是随着转基因 Bt 植物的培育。本研究的目的是评估具有不同叶色和毛状体密度的大豆植物对 S. cosmioides 的抗排毒作用。通过不偏好进食和产卵试验来评估抗氧中毒。该研究使用基因型 Anta 82、BMX Desafio、BMX Potência、BRS 397、BRS GO 6970 IPRO、BRS 7270 IPRO、BRS 7470 IPRO、BRS 8170 IPRO、BRS GORS 848 在无选择和自由选择测试中进行7460、BRS GO Jataí、IAC 100、M 7739 IPRO、NA 5909、NS 7338 IPRO、NS 7447 IPRO、PI 227682 和 PI 227687。基因型 IAC 100、抗 PI 22728 和 PI 2728 介导的叶色病 PI 22728。和毛状体密度。这些基因型可能适用于旨在纳入对 S. cosmioides 的抗性来源的育种计划。由于中等抗性，栽培品种 M 7739 IPRO 可被大豆生产者用作 S. cosmioides 的控制策略。