01917naa a2200241 a 450000100080000000500110000800800410001910000220006024501030008226000090018552011760019465000130137065000220138365000200140565300280142565300240145365300290147770000230150670000190152970000210154870000210156977300850159021018392019-03-19       2018    bl uuuu     u00u1 u    #d1 aSILVA, I H. S. da  aThe infectivity of SfMNPV on fall armyworm is influenced by the host plant.h[electronic resource]  c2018  aThis work evaluated the infectivity and production of occlusion bodies (OBs) of the SfMNPV-6NR on fall armyworm (FAW), Spodoptera frugiperda, when fed on different host plants. The experiment was performed in laboratory, in a completely randomized design using two concentrations of SfMNPV-6NR (2×106 and 2×107 OBs/mL) and six different host plants (soybean, corn, cotton, bean, sorghum and millet). The larval mortality, larval weight (LW), pupal weight (PW) of S. frugiperda and the production of OBs by virus were evaluated. S. frugiperda larvae were less susceptible to baculovirus when fed on cotton leaves (38 ± 4.17 and 70 ± 6.44% mortality) in the two concentrations tested (2×106 and 2×107 OBs/mL, respectively). The LW was affected by the virus concentration depending on the plant species consumed and the virus concentrations. The PW was affected by the plant species used to feed larvae. There was no effect of the host plant on the OBs virus production. The results demonstrate adverse effects of the host plant on the infectivity of the SfMNPV-6NR in S. frugiperda, especially a deleterious effect of the cotton plant in the virus infection capacity.  aAlgodão  aPlanta Hospedeira  aPraga de Planta  aInteração tritrófica  aLagarta-do-cartucho  aVírus entomopatogênico1 aCOSTA, V. H. D. da1 aCURY, J. de C.1 aVALICENTE, F. H.1 aPOLANCZYK, R. A.  tRevista Brasileira de Milho e Sorgo, Sete Lagoasgv. 17, n. 3, p. 369-379, 2018.