With more than 200 host plant species, the two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae), is one of the most common and destructive pests of agricultural crops including vegetables, fruits, field crops and ornamentals in both open-field and greenhouse cultivations in Turkey. Control of this pest generally depends on the use of synthetic pesticides. The use of resistant plant varieties in conjunction with other control tactics generates more effective and sustainable results in management of many pests. In the present study, a total of 16 eggplant genotypes, including eight wild sources and eight standard commercial cultivars, were evaluated for the first time using free-choice and bridge test methods for their resistance against this mite under controlled conditions. Resistance was evaluated by counting mites settled on plants of each genotype. Resistance data were calculated by taking mean number (no.) of mites that prefer the plants of susceptible or resistant genotypes at each time interval (1, 3, 5, 7 or 9 days after releasing mites in free-choice tests; 30 min, 1, 2 or 3 h in bridge tests). The results from free-choice tests showed that wild genotype, Solanum sisymbriifolium (from INRA, France) was the most resistant genotype to T. urticae with no settlement of mites per plant both at 7 and 9 days after releasing mites, and followed by two commercial S. melongena genotypes (Topan 374 and Kemer) that had 2.25 and 2.50, 4.25 and 3.50 mites per plant, respectively, on the 7th and 9th days of mite introduction. S. sisymbriifolium was also found to be the most resistant genotype in bridge tests with a mean no. of 13.0 mites per plant. These results can be used for breeding and management purposes for control of two-spotted spider mite.

中文翻译：

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16 种茄子基因型对二斑叶螨 Tetranychus urticae Koch（Acari：Tetranychidae）的抗性评价

双斑叶螨(Tetranychus urticae Koch (Acari: Tetranychidae)) 寄主植物种类超过200 种，是农作物包括蔬菜、水果、大田作物和观赏植物的最常见和破坏性害虫之一。和土耳其的温室栽培。这种害虫的控制通常取决于合成农药的使用。将抗性植物品种与其他控制策略结合使用，可以在许多害虫的管理中产生更有效和可持续的结果。在本研究中，共有 16 个茄子基因型，包括 8 个野生来源和 8 个标准商业栽培品种，首次使用自由选择和桥梁测试方法在受控条件下评估了它们对这种螨的抗性。通过计数每个基因型植物上的螨来评估抗性。通过在每个时间间隔（在自由选择试验中释放螨虫后 1、3、5、7 或 9 天；30 分钟， 1、2 或 3 小时的桥接测试）。自由选择试验结果表明，野生基因型Solanum sisymbriifolium（来自法国INRA）是对T. urticae 最具抗性的基因型，在释放螨虫后7 天和9 天每株都没有螨虫沉降，其次是2在螨引入的第 7 天和第 9 天，每株植物分别具有 2.25 和 2.50、4.25 和 3.50 个螨的商业 S. melongena 基因型（Topan 374 和 Kemer）。还发现 S. sisymbriifolium 是桥接试验中最具抗性的基因型，平均数为 每株植物 13.0 个螨虫。这些结果可用于控制二斑叶螨的繁殖和管理目的。