Adhikary Lovely, Smith Hugh A, Whitaker Vance M, Lahiri Sriyanka
Gulf Coast Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, Wimauma, FL, USA.
J Econ Entomol. 2025 Apr 26;118(2):816-825. doi: 10.1093/jee/toaf041.
Strawberry, Fragaria x ananassa Duchesne (Rosales: Rosaceae), is an important specialty crop in Florida, generating about $500 million in annual revenue. An invasive insect, chilli thrips, Scirtothrips dorsalis Hood (Thysanoptera: Thripidae), has emerged as a major strawberry pest, causing considerable yield and revenue loss in recent years. Pesticide application is the leading control option but is not always recommended due to resistance development. Host plant resistance (HPR) can be a novel option to manage S. dorsalis sustainably. Four commercial cultivars, 'Florida Brilliance', 'Florida Medallion FL16.30-128', 'Sweet Sensation 'Florida127', and 'Florida Pearl FL16.78-109', were evaluated for their performance in the 2021-2022 field season under the natural population of S. dorsalis. In 2022-2023 and 2023-2024, 3 more cultivars, 'Strawberry Festival', 'Florida Radiance', and 'Florida Beauty', were added to this list. Twenty bare-root strawberry transplants were planted in each field plot, and each cultivar was replicated 8 times in a randomized complete block design. Damage on trifoliate, number of adults and larval S. dorsalis on trifoliate, number of flowers, and marketable fruit yield were assessed for each cultivar. Results revealed that 'Florida Pearl 109' had the highest insect count and damage index of all 3 year. 'Strawberry Festival' also showed the same trend after its introduction in the second year. 'Florida Brilliance' and 'Sweet Sensation' had the lowest damage index, lowest adult insect count, and higher marketable yield compared to 'Florida Pearl 109' and 'Strawberry Festival'. Therefore, utilizing resistant cultivars can be an effective tool for managing S. dorsalis in the field.
草莓，凤梨草莓（蔷薇目：蔷薇科），是佛罗里达州一种重要的特色作物，年收益约为5亿美元。一种入侵性昆虫，辣椒蓟马，西花蓟马（缨翅目：蓟马科），已成为草莓的主要害虫，近年来造成了可观的产量和收益损失。施用农药是主要的防治手段，但由于抗药性的产生，并不总是被推荐。寄主植物抗性（HPR）可能是可持续管理西花蓟马的新选择。对四个商业品种‘佛罗里达光辉’‘佛罗里达勋章FL16.30 - 128’‘甜蜜感觉佛罗里达127’和‘佛罗里达珍珠FL16.78 - 109’在2021 - 2022田间季西花蓟马自然种群下的表现进行了评估。在2022 - 2023年和2023 - 2024年，又有3个品种‘草莓节’‘佛罗里达光芒’和‘佛罗里达美丽’被加入该名单。每个田间小区种植20株裸根草莓苗，每个品种在随机完全区组设计中重复8次。对每个品种的三叶期损伤情况、三叶期西花蓟马成虫和幼虫数量、花的数量以及可上市果实产量进行了评估。结果显示，‘佛罗里达珍珠109’在所有三年中的昆虫数量和损伤指数最高。‘草莓节’在第二年引入后也呈现相同趋势。与‘佛罗里达珍珠109’和‘草莓节’相比，‘佛罗里达光辉’和‘甜蜜感觉’的损伤指数最低、成虫数量最少且可上市产量更高。因此，利用抗性品种可能是田间管理西花蓟马的有效工具。
