Striga gesnerioides is one of the major biotic constraints to cowpea (Vigna unguiculata [L.] Walp) production throughout West Africa. The best way to control and limit the spread of this weed remains genetic control, but recent works have shown that all cowpea varieties commonly grown in Togo are susceptible to S. gesnerioides. This study aims to investigate the resistance response of cowpea germplasm from Togo to S. gesnerioides. A field test was performed under natural infestation followed by a pots test under artificial infestation. Genotyping was carried out with three molecular markers SSR1, 61RM2 and C42-2B, known for their linkage to S. gesnerioides resistance genes. The results have revealed three cowpea accessions, TG20_66, TG20_82 and TG20_108, phenotypically resistant to S. gesnerioides. All three resistant accessions have shown the RSG3-301 resistance gene presence. Potential resistance gene sources to S. gesnerioides exist among cowpea accessions from Togo.

中文翻译：

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独脚金抗性来源的鉴定。来自多哥的豇豆 (Vigna unguiculata [L.] Walp) 种质资源中的 Vatke

独脚金是整个西非豇豆（ Vigna unguiculata [L.] Walp）生产的主要生物限制因素之一。控制和限制这种杂草蔓延的最佳方法仍然是基因控制，但最近的研究表明，多哥常见的所有豇豆品种都对苦芥菜敏感。本研究旨在探讨多哥豇豆种质对苦苣苔的抗性反应。在自然侵染下进行田间试验，然后在人工侵染下进行盆栽试验。使用三个分子标记 SSR1、61RM2 和 C42-2B 进行基因分型，这三个分子标记因与苦苣苔抗性基因的连锁而闻名。结果显示三个豇豆种质TG20_66、TG20_82和TG20_108对苦芥菜具有表型抗性。所有三个抗性种质均显示出 RSG3-301 抗性基因的存在。来自多哥的豇豆种质中存在对苦苣苔草的潜在抗性基因来源。