A Bt-transgenic line of sweet corn with good resistance to the corn earworm but limited resistance to the fall armwyworm was studied for its effect on viral control of the fall armyworm. The activity of the nucleopolyhedrovirus of the fall armyworm was measured by bioassay on foliage of the transgenic line and of its nontransgenic isoline. At constant dosages of the virus, expressed as occlusion bodies per larva, mortality was significantly higher on the transgenic corn. This result suggests that the virus may be useful for controlling the fall armyworm on transgenic sweet corn.
Species 1: Lepidoptera Noctuidae Spodoptera frugiperda (fall armyworm)
Keywords: microbial control, virus
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