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Integration of resistant variety and biological agent to control tomato leaf miner, Tuta absoluta (Meyrick), under greenhouse conditions
Bulletin of Entomological Research ( IF 1.6 ) Pub Date : 2020-12-17 , DOI: 10.1017/s0007485320000735
Zarir Saeidi , Mehdi Raeesi

Tuta absoluta (Meyrick) is considered as a major pest of tomato worldwide that causes significant losses in the crop production. This study aimed to evaluate integration of two effective and environmentally safe methods (host plant resistant and biological control) for sustainable management of the pest under greenhouse conditions. The experiment was conducted based on the factorial design with ten replicates under greenhouse conditions (22 ± 3°C, 50 ± 10 RH and 14 L:10 D photoperiod). Infestation to T. absoluta was conducted at the first-flowering stage of the plants by introducing a pair of newly emerged adults (one female and one male) per plant. Ten days later, the biological agent, Trichogramma brassicae, was released on the treatments by hanging a card contained 50 parasitized eggs in each replicate. Observation was performed weekly on ratio of infested leaves per plant (%), number of larvae/plant, number of mines/leaf and ratio of infested fruits/plant (%). Results indicated that the susceptible variety alone (Izmir) supported the highest ratio of infested leaves (42.92 ± 1.95%), number of larvae/plant (12.86 ± 0.71), number of mines/leaf (1.29 ± 0.07) and infested fruits/plant (18.8 ± 1.10%), whereas the lowest (6.12 ± 0.42%, 1.85 ± 0.13, 0.18 ± 0.02 and 0.12 ± 0.06%, respectively) were observed in combined resistant variety (Cherry) and parasitoid released treatment. Integration of these methods not only decreases damage caused on tomato leaflets and fruits, but also reduces insecticide applications which are adversely impact human health and environment.

中文翻译:

在温室条件下整合抗性品种和生物制剂以控制番茄潜叶虫 Tuta absoluta (Meyrick)

绝对图塔(Meyrick) 被认为是全球番茄的主要害虫,会导致作物生产的重大损失。本研究旨在评估两种有效且环境安全的方法(宿主植物抗性和生物防治)的整合,以在温室条件下对害虫进行可持续管理。该实验基于因子设计进行,在温室条件(22 ± 3°C、50 ± 10 RH 和 14 L:10 D 光周期)下重复十次。侵染到绝对T.通过在每株植物中引入一对新出现的成虫(一个雌性和一个雄性)在植物的第一个开花阶段进行。十天后,生物制剂,芸苔藓,通过在每个重复中悬挂一张包含 50 个寄生卵的卡片来释放治疗。每周对每株植物受侵染叶片的比率 (%)、幼虫/植物的数量、地雷/叶片的数量和受侵染果实/植物的比率 (%) 进行观察。结果表明,仅易感品种(伊兹密尔)支持的受侵染叶片比例最高(42.92±1.95%)、幼虫/株数(12.86±0.71)、地雷/叶片数(1.29±0.07)和受侵果/株(18.8 ± 1.10%),而在联合抗性品种 (樱桃) 和寄生蜂释放处理中观察到最低 (分别为 6.12 ± 0.42%、1.85 ± 0.13、0.18 ± 0.02 和 0.12 ± 0.06%)。这些方法的整合不仅减少了对番茄小叶和果实造成的损害,
更新日期:2020-12-17
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