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Small scale-up validation for ionizing radiations against Helicoverpa armigera larvae
김준현,주윤아,이연정,김정민,장미연,박정규 한국응용곤충학회 2016 Journal of Asia-Pacific Entomology Vol.19 No.1
Helicoverpa armigera Hübner (Lepidoptera: Noctuidae) is an economically important pest, which harms various kinds of important agricultural crops, such as cotton and paprika. Effects of ionizing radiation (gamma, x-ray, and electron beam radiation) at 300 Gy on 4th to 5th instar larvae of H. armigera were tested on the post-treatment development of the larvae to identify the effective quarantine treatment dose. A few adults emerged out of the pupae developed from larvae irradiated with gamma ray and electron beams, while no adults emerged from the larvae irradiated with x-rays. Mortalities caused by gamma, X-ray, and electron beam radiation were 99.05%, 100%, and 99.93%, respectively, with no significant difference from that caused by methyl bromide (MeBr) fumigation (99.83%). Our results indicate that ionizing radiation could be recommendable as an alternative toMeBr and a phytosanitary treatment for quarantine. A treatment dose of 300 Gy is adaptable as a quarantine treatment to H. armigera larva in paprika fruit for prevention of pupation and adult emergence.