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이미다클로프리드 저항성 벼멸구의 살충제 교차저항성과 두 종류 벼 품종(친농과 추청)에서의 발육특성
정인홍(In-Hong Jeong),전성욱(Sung-Wook Jeon),이상구(Sang-Ku Lee),박부용(Bueyong Park),박세근(Se-Keun Park),이상범(Sang-Bum Lee),최낙중(Nak Jung Choi),이시우(Si-Woo Lee),이시혁(Si Hyeock Lee),권덕호(Deok Ho Kwon) 한국농약과학회 2017 농약과학회지 Vol.21 No.4
The purpose of this study is to analyze the growth characteristics of imidacloprid resistant brown planthopper (BPH) on the two rice varieties (BPH resistant variety, Chinnong and BPH susceptible variety, Chuchung). The mortalities of resistant- and susceptible- strains were 2.7% and 100% after 72 hr treatment in the recommended concentration (RC, 20 ppm) of imidacloprid, respectively, and the LC<SUB>50</SUB> of resistant strain revealed 17.8 fold higher than that of susceptible strain. Moreover, the resistant strain revealed the cross resistance against four neonicotinoids (acetamiprid, clothianidin, thiamethoxam and thiacloprid), but not for carbamate (fenobucarb), pyrethroid (etofenprox) and sulfoxamine (sulfoxaflor) insecticides. In the comparison of development characters on life table between susceptible and resistant strain for two rice varieties, the resistant strain which was reared on Chinnong variety showed low nymphal period, female longevity, fecundity, net reproduction rate (R<SUB>0</SUB>), intrinsic rate of increase (r<SUB>m</SUB>) and high doubling time (D<SUB>t</SUB>). The results indicate that the cultivation of BPH resistant variety would be an effective strategy in the imidaclopridresistant BPH management.