Cowpea [Vigna unguiculata (L.) Walp.] is a main legume food cultivated for its leaves and grains in Benin. However, cowpea production is limited by insect pests with flower bud thrips being the most damaging and can cause up to 100% yield loss. Host plant resistance is the best strategy to control the pest. This study aimed to screen Benin cowpea germplasm for resistance to flower bud thrips. Forty-eight accessions were evaluated under greenhouse conditions with reared flower bud thrips. Data were collected on thrips damage (score = 1–9), larvae and adults thrips counts in flowers, on yield and yield components. Data were subjected to analysis of variance, Pearson correlation and multiple linear regression analyses. Results showed that two thrips species (Megalurothrips sjostedti and Sericothrips occipitalis) attacked cowpea with M. sjostedti being the most dominant. The different collected populations of M. sjostedti caused similar damage to cowpea. Significant differences were observed among accessions for thrips damage, for yield and yield components. The accessions IT07K-243-1-10, Nontchè-Wagbèhamin, Kplobè-Wewe, Kpegnikoun, Kpodjiguegue, Moussa, IT86D-888, Sanzibanili and Sèwé were highly resistant to flower bud thrips by presenting low thrips damage and very few thrips counts in flower while Tiligré, IT83S-742-2 and IT84S-2246-4 were tolerant to thrips by presenting low thrips damage despite the presence of many thrips counts in flowers. These accessions could serve as resistance sources in breeding programs on cowpea in Benin.

中文翻译：

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贝宁豇豆种质中花芽蓟马（Megalurothrips sjostedti Trybom）种群多样性和抗性来源

豇豆 [ Vigna unguiculata (L.) Walp.] 是贝宁的主要豆类食物，以其叶子和谷物种植。然而，豇豆生产受到害虫的限制，其中花芽蓟马是最具破坏性的，可导致高达 100% 的产量损失。寄主植物抗性是控制害虫的最佳策略。本研究旨在筛选贝宁豇豆种质对花芽蓟马的抗性。在温室条件下用饲养的花芽蓟马评估了 48 个种质。收集了蓟马损害（分数 = 1-9）、花中蓟马幼虫和成虫数量、产量和产量构成方面的数据。对数据进行方差分析、Pearson 相关分析和多元线性回归分析。结果表明，两种蓟马（Megalurothrips sjostedti和Sericothrips occipitalis ) 攻击豇豆，其中M. sjostedti是最主要的。不同采集的M. sjostedti种群对豇豆造成了类似的损害。在蓟马损害、产量和产量组成部分之间观察到显着差异。IT07K-243-1-10、Nontchè-Wagbèhamin、Kplobè-Wewe、Kpegnikoun、Kpodjiguegue、Moussa、IT86D-888、Sanzibanili 和 Sèwé 种质对花芽蓟马具有高度抗性，其对花芽蓟马的危害较低，并且在花蓟马中的数量很少而 Tiligré、IT83S-742-2 和 IT84S-2246-4 对蓟马具有耐受性，尽管花朵中存在许多蓟马数量，但其对蓟马的伤害较低。这些种质可以作为贝宁豇豆育种计划的抗性来源。