Effect of Host Plant on the Infectivity of S/MNPV to Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae) Larvae

Monobmllah, Mohammad; Shankar, Uma; Bharti, Poonam; Gupta, Rakesh Kumar; Kaul, Virender

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자료유형: 학술저널

저자정보: Monobmllah, Mohammad (SK University of Agricultural Sciences & Technology, Faculty of Agriculture, Division of Entomology) Shankar, Uma (SK University of Agricultural Sciences & Technology, Faculty of Agriculture, Division of Entomology) Bharti, Poonam (SK University of Agricultural Sciences & Technology, Faculty of Agriculture, Division of Entomology) Gupta, Rakesh Kumar (SK University of Agricultural Sciences & Technology, Faculty of Agriculture, Division of Entomology) Kaul, Virender (SK University of Agricultural Sciences & Technology, Faculty of Agriculture, Division of Entomology)

저널정보: 한국응용곤충학회 Journal of Asia-Pacific Entomology Journal of asia-pacific entomology 제10권 제2호

발행연도: 2007.1

수록면: 151 - 155 (5page)

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The susceptibility of Spodoptera litura to SlMNPV infection was markedly affected by phytochemicals ingested during the acquisition of viral inoculum on foliage of tomato and cauliflower. The $LD_{50}$ values computed for second, third and fourth instar larvae assayed on tomato leaves were 254, 819 and 23395 PIBs/larva, respectively whereas, it was 326, 1719 and 43843 PIBs/larva for respective instars when assayed on cauliflower leaves. Thus $LD_{50}$ values for second, third and fourth instar larvae were 1.28-, 2.09- and 1.87- fold lower, respectively in tomato leaves. Similarly, $LT_{50}$ values for second, third and fourth instar larvae assayed on tomato leaves were 7.1 and 7.5 days, respectively at inoculum dose of $2.7{\times}10^4$ PIBs/larva whereas, it was 7.7 and 8.0 days for respective instars when assayed on cauliflower leaves at same inoculum. This result also showed that the S. litura were more susceptible on tomato leaves in comparison to cauliflower leaves as the time required for mortality was lower in tomato leaves. The possible biochemical bases for differential level of mortality of S. litura larvae on tomato and cauliflower crops needs to be investigated.

#Spodoptera litura #Host plant #Nucleo-polyhedrovirus #Tritrophic interaction

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