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<p>The sorghum aphid, <i>Melanaphis sorghi</i>, is one of the main pests affecting sorghum, (<i>Sorghum bicolor</i> L. Moench, Poaceae), in Mexico. The control of its populations predominantly relies on synthetic insecticides; however, new alternatives such as plant extracts, are being actively explored. This study aimed to evaluate the insecticidal effects of ethyl acetate and methanol extracts from <i>Salvia rosmarinus</i> leaves using artificial diet bioassays against <i>M. sorghi</i>. Additionally, the chemical compounds in both extracts were identified using High-Performance Liquid Chromatography (HPLC). The results showed that after 72&#xa0;h, ethyl acetate and methanol extracts demonstrated insecticidal activities of 68% and 88%, respectively. HPLC analysis identified polyphenolic compounds, flavonoids, and caffeoylquinic acid derivatives as the main groups in the extracts. These compounds suggest that <i>S. rosmarinus</i> extracts offer a promising ecological alternative for controlling <i>M. sorghi</i>, supporting integrated pest management strategies that reduce synthetic insecticide reliance while promoting environmental sustainability.</p>

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Insecticidal activity of Salvia rosmarinus (Lamiaceae) leaf extracts against sorghum aphid, Melanaphis sorghi (Hemiptera: Aphididae)

  • 期刊论文

  • 发表日期：

    2025年2月26日

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  • Manases González-Cortazar,
  • Alejandro Zamilpa,
  • Erubiel Toledo-Hernández,
  • Ma. Anel Alarcón-Vargas,
  • Anette Guadalupe Leyva-Bello,
  • César Sotelo-Leyva,
  • Luz Janet Tagle-Emigdio

摘要

The sorghum aphid, Melanaphis sorghi, is one of the main pests affecting sorghum, (Sorghum bicolor L. Moench, Poaceae), in Mexico. The control of its populations predominantly relies on synthetic insecticides; however, new alternatives such as plant extracts, are being actively explored. This study aimed to evaluate the insecticidal effects of ethyl acetate and methanol extracts from Salvia rosmarinus leaves using artificial diet bioassays against M. sorghi. Additionally, the chemical compounds in both extracts were identified using High-Performance Liquid Chromatography (HPLC). The results showed that after 72 h, ethyl acetate and methanol extracts demonstrated insecticidal activities of 68% and 88%, respectively. HPLC analysis identified polyphenolic compounds, flavonoids, and caffeoylquinic acid derivatives as the main groups in the extracts. These compounds suggest that S. rosmarinus extracts offer a promising ecological alternative for controlling M. sorghi, supporting integrated pest management strategies that reduce synthetic insecticide reliance while promoting environmental sustainability.