X-ray Irradiation Control of Frankliniella occidentalis and Frankliniella intonsa (Thysanoptera: Thripidae) in the Exportation of Freshly Cut Lily Flowers.
Lily (Lilium longiflorum Thunb.) is the most representative bulb flower, and it is the third most important flower in the flower industry of South Korea after rose and chrysanthemum. To determine the efficacy of X-ray irradiation for use in quarantine processing, two species of flower thrips (Frankliniella intonsa (Trybom) and Frankliniella occidentalis (Pergande)) were placed in the top, middle, and bottom locations of lily boxes and irradiated with different X-ray doses. After irradiation with an X-ray dose of 150 Gy, the egg hatching of the two flower thrips was completely inhibited at every location in the lily boxes, and the irradiated F. intonsa and F. occidentalis nymphs failed to emerge as adult in every location of the lily boxes. When the adults were irradiated at 150 Gy, the fecundity of the two flower thrips was markedly lower than that of the untreated control groups. The F1 generation failed to hatch at the top and middle locations, whereas the F1 generation of both F. intonsa and F. occidentalis was not suppressed at the bottom locations, even at 200 Gy. However, hatching was perfectly inhibited at 300 Gy of X-ray irradiation. Also, X-rays did not affect the postharvest physiology of cut lilies. Therefore, a minimum dose of 300 Gy is recommended for the control of F. intonsa and F. occidentalis for the exportation of lily.
Department of Plant Medicine, College of Agriculture, Life and Environment Sciences, Chungbuk National University, Cheongju 28644, South Korea (hyunnakoo@hanmail.net; sph5500@naver.com; nshk0917@gmail.com; khkim@chungbuk.ac.kr).
Hyun-Na
HN
Koo
Department of Plant Medicine, College of Agriculture, Life and Environment Sciences, Chungbuk National University, Cheongju 28644, South Korea (hyunnakoo@hanmail.net; sph5500@naver.com; nshk0917@gmail.com; khkim@chungbuk.ac.kr).
Seung-Hwan
SH
Yun
Department of Clinical Laboratory Science, Wonkwang Health Science University, Iksan 54538, South Korea (dnapcr@nate.com).
Hyun-Ju
HJ
Kim
Department of Plant Medicine, College of Agriculture, Life and Environment Sciences, Chungbuk National University, Cheongju 28644, South Korea (hyunnakoo@hanmail.net; sph5500@naver.com; nshk0917@gmail.com; khkim@chungbuk.ac.kr).
Hyun Kyung
HK
Kim
Department of Plant Medicine, College of Agriculture, Life and Environment Sciences, Chungbuk National University, Cheongju 28644, South Korea (hyunnakoo@hanmail.net; sph5500@naver.com; nshk0917@gmail.com; khkim@chungbuk.ac.kr).
Gil-Hah
GH
Kim
D000818:Animals; D005260:Female; D005298:Fertility / Q000528:radiation effects; D035264:Flowers; D027762:Lilium / Q000502:physiology / Q000528:radiation effects; D009758:Nymph / Q000254:growth & development / Q000528:radiation effects; D010572:Pest Control, Biological; D056910:Republic of Korea; D061149:Thysanoptera / Q000254:growth & development / Q000502:physiology / Q000528:radiation effects*; D014965:X-Rays
exportation; flower thrips; ionizing radiation; lily