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ISSN : 1226-9999(Print)
ISSN : 2287-7851(Online)
Korean Journal of Environmental Biology Vol.35 No.4 pp.526-532

Life Table Analysis of the Brown Planthopper, Nilaparvata lugens Stål (Hemiptera: Delphacidae) on Rice of Resistant Cultivars

Nak Jung Choi,In-Hong Jeong,Deok Ho Kwon,Man-Young Choi,Chai-Hun Baik


Development, survival, and reproduction of brown planthopper (BPH) Nilaparvata lugens Stål (Hemiptera: Delphacidae), were studied in laboratory at 25±2°C, 65±5% RH and a 16L : 8D hours photoperiodism on five rice cultivars of: Dongjin 1ho, Chungchungbyeo, Jangseongbyeo, Chinnongbyeo and Jungmo 1045. BPH nymphs successfully survived on all rice cultivars, although survival rate was lowest on Jangseongbyeo (36.0%). Developmental time of immature stages ranged from 11.7±0.59 d on Jungmo 1045 to 12.8±0.59 d on Chinnongbyeo. Reproductive period and female longevity were longest on Dongjin 1ho, Chinnongbyeo and Jungmo 1045 while highest fecundity of N. lugens being observed on these three rice cultivars. Highest and lowest net reproductive rates were calculated on rice cultivars, Jungmo 1045 and Jangseongbyeo, respectively. Mean generation time was the longest on rice cultivar Dongjin 1ho. Respective descending order of intrinsic rates of population increase were on Jungmo 1045, Chinnongbyeo, Dongjin 1ho, Chungchungbyeo and Jangseongbyeo. These population parameters showed that N. lugens can successfully survive and reproduce on Chinnongbyeo and Jungmo 1045.

벼멸구 저항성 품종벼에서 벼멸구의 생명표 분석