Department of Plant Medicine, College of Agriculture, Life and Environment Science, Chungbuk National University, Cheongju, Republic of Korea.
Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Republic of Korea.
J Econ Entomol. 2019 Aug 3;112(4):1611-1617. doi: 10.1093/jee/toz083.
Whitefly pests, including the sweetpotato whitefly, Bemisia tabaci (Gennadius), and the greenhouse whitefly, Trialeurodes vaporariorum (Westwood), are economically important in agriculture. With the annual growth of the domestic fresh fruit export market, various quarantine treatment methods are being used to export strawberries of better quality. The objective of the present study was to evaluate the effects of gamma rays on the development and reproductive sterility of B. tabaci and T. vaporariorum. In both species, the eggs were completely inhibited from hatching at 50 Gy, and the emergence of third-instar nymphs was completely suppressed at 150 Gy. Some adult B. tabaci and T. vaporariorum spawning occurred at 100 and 70 Gy, respectively; however, at these irradiation levels, F1 hatchability was completely inhibited. Dosimetry results showed that the penetrating power of gamma ray in the strawberry-filled box was the lowest at the mid-box position. Therefore, B. tabaci and T. vaporariorum were placed in the middle of the strawberry-filled box and irradiated. A gamma-ray irradiation of 100 Gy suppressed the development and reproduction of eggs and adults in both B. tabaci and T. vaporariorum. Our data suggest that at least 100 Gy should be used for the control of these two species of whitefly for strawberry export.
粉虱类害虫，包括甘薯粉虱（Bemisia tabaci）和温室粉虱（Trialeurodes vaporariorum），在农业中具有重要的经济意义。随着国内新鲜水果出口市场的逐年增长，各种检疫处理方法被用于出口品质更好的草莓。本研究旨在评估γ射线对 B. tabaci 和 T. vaporariorum 发育和生殖不育的影响。在这两个物种中，50Gy 可完全抑制卵孵化，150Gy 可完全抑制三龄若虫的出现。在 100Gy 和 70Gy 时，分别有一些 B. tabaci 和 T. vaporariorum 的成虫产卵；然而，在这些辐照水平下，F1 的孵化率完全受到抑制。剂量测定结果表明，γ射线在装满草莓的盒子中的穿透力在盒子中部最低。因此，B. tabaci 和 T. vaporariorum 被放置在装满草莓的盒子中间进行辐照。100Gy 的γ射线辐照可抑制 B. tabaci 和 T. vaporariorum 的卵和成虫发育和繁殖。我们的数据表明，对于草莓出口，至少应使用 100Gy 来控制这两种粉虱。
