We investigated the inheritance of tebufenozide resistance in the smaller tea tortrix,
Adoxophyes honmai Yasuda, by crossing experiments using resistant (R) and susceptible (S) strains of Shizuoka Prefecture. The lethal concentration 50 values (ppm) of tebufenozide in the R and S strains were 595 and 4.46, respectively. The results of the F
1 and F
1′ strains suggested that resistance to tebufenozide was inherited as an autosomal and incompletely dominant trait. Furhermore, the results of F
2, F
2′, and backcross strains showed that the resistance was controlled by polygenic factors.
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