Since 2013 Melanaphis sacchari (Zehnter) (Hemiptera: Aphididae), the sugarcane aphid, has been a threat to sorghum production in the United States. The development of resistant sorghum hybrids has been one of the main management strategies. However, plant resistance can be overcome over time and new resistance genes need to be identified and introduced into adapted sorghum hybrids to secure sorghum production. Sorghum plant introduction (PI) genotypes were screened for resistance to M. sacchari through laboratory, greenhouse, and field assays. In addition, the feeding parameters of M. saccahri were analyzed and detailed in seven sorghum genotypes through EPG assays. Results showed sorghum genotypes PI 524770, PI 564163, and PI 643515 expressed resistance to M. sacchari consistently in laboratory, greenhouse, and field tests. EPG analysis suggested sorghum genotypes PI 524770 and PI 564163 express antibiosis to M. sacchari while PI 643515 expresses both antibiosis and antixenosis. Increasing the number of sorghum hybrids resistant to M. sacchari is key to improving integrated pest management of M. sacchari. By utilizing host plant resistance, sorghum producers can decrease insecticide applications while enhancing biological control.

中文翻译：

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在选定的高粱植物介绍中表征宿主植物对 Melanaphis sacchari（半翅目：蚜科）的抗性

自 2013 年以来，甘蔗蚜虫 Melanaphis sacchari (Zehnter)（半翅目：蚜科）一直对美国的高粱生产构成威胁。开发抗性高粱杂交种一直是主要的管理策略之一。然而，随着时间的推移，植物抗性可以被克服，需要鉴定新的抗性基因并将其引入适应的高粱杂交种以确保高粱生产。通过实验室、温室和田间试验筛选高粱植物引种 (PI) 基因型的抗糖分枝杆菌。此外，通过 EPG 分析对七种高粱基因型中的 M. saccahri 的饲养参数进行了分析和详细说明。结果表明，在实验室、温室和田间试验中，高粱基因型 PI 524770、PI 564163 和 PI 643515 始终表现出对 M. sacchari 的抗性。EPG 分析表明高粱基因型 PI 524770 和 PI 564163 表达对 M. sacchari 的抗菌作用，而 PI 643515 表达抗菌作用和抗异种作用。增加抗糖精高粱杂交种的数量是改善糖精病虫害综合治理的关键。通过利用寄主植物的抗性，高粱生产者可以减少杀虫剂的使用，同时加强生物防治。